鈦摻雜對錳酸鋰LiMn2O4電化學性能的改進作用

<p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 150%; text-align: center; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm;" align="center"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 16pt; line-height: 150%; font-family: 楷體_GB2312; mso-bidi-font-family: Arial;">鈦摻雜對錳酸鋰<span lang="EN-US">LiMn₂O₄</span>電化學性能的改進作用<span lang="EN-US"></span></span></strong></p> <p class="MsoNormal" style="margin: 7.8pt 0cm; line-height: 150%; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .5gd; mso-para-margin-left: 0cm;"><span style="font-size: 10.5pt; line-height: 150%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;"> </span></span></p> <p class="MsoNormal" style="margin: 3.1pt 0cm; line-height: 130%; mso-para-margin-top: .2gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .2gd; mso-para-margin-left: 0cm;"><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">以納米二氧化鈦（</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">VK-TA18</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">）為摻雜體，</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">Mn₂O₃</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">、和</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">Li2CO3</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">為原料采用固相法制備的</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">LiMn_2-xTi_x O₄ (x≤O</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">．</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">1)</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">，具有單一相尖晶石結構，隨摻納米二氧化鈦（</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">VK-TA18</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">）量的加大，晶胞體積加大。適量的納米二氧化鈦（</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">VK-TA18</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">）摻雜提高了材料的初次放電比容量，摻雜納米二氧化鈦（</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">VK-TA18</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">）的量過大，材料的初次放電比容量降低。納米二氧化鈦（</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">VK-TA18</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">）的摻入細化了尖晶石顆粒，顆粒分散性提高，增強了</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">Li+</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">離子在固相中的擴散能力。摻納米二氧化鈦（</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">VK-TA18</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">）后材料的循環性能改善，電較反應的可逆性增強。</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">21</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">和</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">55</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-bidi-font-family: Arial;" lang="EN-US">℃</span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">，</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">1C</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">倍率，</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">LiMn_1.995Ti_0.005O₄</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">的初次放電比容量分別為</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">100.74</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">和</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">102.05mAh</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">／</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">g</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">，循環</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">50</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">周期容量保持率分別為</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">94.12</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">和</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">88.82 </span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">。適量納米二氧化鈦（</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">VK-TA18</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">）摻雜能有效改善尖晶石</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">LiMn₂O₄</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">的容量衰減。</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"></span></p> <p class="MsoNormal" style="margin: 3.1pt 0cm; line-height: 130%; mso-para-margin-top: .2gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .2gd; mso-para-margin-left: 0cm;"><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">正較材料</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">LiMn₂O₄</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">和</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">LiMn_2-x Ti _x O₄</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">在</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">21</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">和</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">55</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-bidi-font-family: Arial;" lang="EN-US">℃</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;"> </span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">，電壓區間</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">3.O</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">～</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">4.2V</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">，</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">1c</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">倍的條件下，摻鈦量</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">x=0.005</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">的材料的初次放電比容量非常大</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">(</span><span style="font-family: Arial;">21</span><span style="font-family: 宋體; mso-ascii-font-family: Arial;">℃</span><span style="font-family: Arial;"> </span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">：</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">102</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">．</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">78mAh</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">／</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">g</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">，</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">55</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-bidi-font-family: Arial;" lang="EN-US">℃</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;"> </span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">：</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">105</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">．</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">76mAh</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">／</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">g)</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">，超過了未摻雜的</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">LiMn₂O₄</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">的初次放電比容量</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">(</span><span style="font-family: Arial;">21</span><span style="font-family: 宋體; mso-ascii-font-family: Arial;">℃</span><span style="font-family: Arial;"> </span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">：</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">100</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">．</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">08mAh</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">／</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">g</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">，</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">55</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-bidi-font-family: Arial;" lang="EN-US">℃</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;"> </span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">：</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">101</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">．</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">82mAh</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">／</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">g)</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">。摻鈦量</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">x=0.005</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">的材料的晶胞體積適當加大，</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">Li</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">離子的擴散通道加大，更有利于</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">Li </span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">離子的脫嵌。初次放電比容量加大是充放電過程中電化學較化變小，</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">Li </span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">離子擴散能力增強的原因。隨著摻鈦量</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">x</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">的加大，</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">21</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">和</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">55</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-bidi-font-family: Arial;" lang="EN-US">℃</span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">下材料的初次放電比容量均降低，這可能是隨著鈦摻雜量的加大降低了活性物質的含量，導致初次放電比容量下降。綜上所述，鈦摻雜量</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">x=0.005</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">的材料既具有較高的初始放電比容量又具有較好常溫、高溫循環性能，常、高溫初次放電比容量分別為：</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">100</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">．</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">74</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">和</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">102</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">．</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">05mAh</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">／</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">g</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">，循環</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">50</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">周期容量保持率分別為</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">94</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">．</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">12 </span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">和</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">88</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">．</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">82 9</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">，</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">5</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">，這可能和適當的晶胞體積，穩定的尖晶石結構有關。摻納米二氧化鈦（</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">VK-TA18</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">）后材料的晶胞體積加大，提高了</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">Li </span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">離子的擴散能力，在充放電過程中</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">Li </span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">離子的脫出和嵌入對擴散通道的影響較少，因此適量的</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">Ti</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">摻人對材料的循環性能有利。但摻雜納米二氧化鈦（</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">VK-TA18</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">）量過大，材料的晶胞體積過大，晶體內結合能減少，導致晶格畸變過大，破壞了晶格中離子的有序化，對擴散通道的形成不利，導致循環過程中容量衰減，循環性能變差。</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"></span></p> <p class="MsoNormal" style="margin: 3.1pt 0cm; line-height: 130%; mso-para-margin-top: .2gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .2gd; mso-para-margin-left: 0cm;"><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">所以納米二氧化鈦（</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">VK-TA18</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">）摻雜量</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">x=0.005</span></span><span style="font-size: 10.5pt; line-height: 130%; font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">為較佳。</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"></span></p> <p class="MsoNormal" style="margin: 3.1pt 0cm; line-height: 130%; mso-para-margin-top: .2gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .2gd; mso-para-margin-left: 0cm;"><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;"> </span></span></p> <p class="MsoNormal" style="margin: 3.1pt 0cm; line-height: 130%; mso-para-margin-top: .2gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .2gd; mso-para-margin-left: 0cm;"><span style="font-size: small;"><span style="font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">陸</span><span style="font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">小姐</span><span style="font-family: Arial;"><span style="mso-bidi-font-family: Arial;" lang="EN-US"><span style="mso-spacerun: yes;">  </span>0571-88920936</span><span style="font-size: 10.5pt; line-height: 130%; mso-bidi-font-family: Arial;" lang="EN-US"></span></span></span></p> <p class="MsoNormal" style="margin: 3.1pt 0cm; line-height: 130%; mso-para-margin-top: .2gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .2gd; mso-para-margin-left: 0cm;"><span style="font-size: small;"><span style="font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">杭州萬景新材料有限公司</span><span style="mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;"><span style="mso-spacerun: yes;">  </span></span></span></span></p> <p class="MsoNormal" style="margin: 3.1pt 0cm; line-height: 130%; mso-para-margin-top: .2gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .2gd; mso-para-margin-left: 0cm;"><span style="font-size: small;"><span style="font-family: 宋體; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial;">網址：</span><span style="mso-bidi-font-family: Arial;" lang="EN-US"><span style="font-family: Arial;">www.veking.cn</span></span></span></p>