| 锂离子电池富锂层状正极材料的表面改性及电化学性能 |
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| 引用本文： | 杨金戈,李宇杰,刘勇,陈宇方,陆地,孙巍巍,郑春满. 锂离子电池富锂层状正极材料的表面改性及电化学性能[J]. 无机化学学报, 2022, 38(7): 1252-1260 |
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| 作者姓名： | 杨金戈 李宇杰 刘勇 陈宇方 陆地 孙巍巍 郑春满 |
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| 作者单位： | 中国人民解放军 61699部队, 枝江 443200;国防科技大学空天科学学院, 长沙 410000 |
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| 基金项目： | 国家自然科学基金(No.51702362,51902343)和湖南省自然科学基金(No.2018JJ3595)资助。 |
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| 摘 要： | 采用一种简单、实用的“浸润-泥化-干燥”结合固相烧结工艺对富锂层状正极材料Li1.2Mn0.54Ni0.13Co0.13O2进行表面改性。这种表面改性的正极材料具有280 mAh·g-1以上的高比容量,在0.5C下历经70周充放电循环后容量保持率达91.6%,与本体材料相比,表现出较优的循环稳定性。
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| 关 键 词： | 富锂 表面改性 正极 循环稳定性 |
| 收稿时间： | 2021-10-15 |
| 修稿时间： | 2022-05-10 |
Surface Modification and Electrochemical Properties of Li-Rich Layered Cathode Materials for Lithium-Ion Batteries |
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| YANG Jin-Ge,LI Yu-Jie,LIU Yong,CHEN Yu-Fang,LU Di,SUN Wei-Wei,ZHENG Chun-Man. Surface Modification and Electrochemical Properties of Li-Rich Layered Cathode Materials for Lithium-Ion Batteries[J]. Chinese Journal of Inorganic Chemistry, 2022, 38(7): 1252-1260 |
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| Authors: | YANG Jin-Ge LI Yu-Jie LIU Yong CHEN Yu-Fang LU Di SUN Wei-Wei ZHENG Chun-Man |
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| Affiliation: | 61699 Unit of People''s Liberation Army of China, Zhijiang, Hubei 443200, China;College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410000, China |
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| Abstract: | A convenient, economical strategy of the"dipping-grinding-sliming"process followed by solid phase sintering was used for surface modification of Li-rich layered cathode materials Li1.2Mn0.54Ni0.13Co0.13O2. The experimental results expressed that compared with pristine material, the surface-modified cathode material exhibited satisfactory cyclic stability. It had an initial capacity of more than 280 mAh·g-1. After 70 charging-discharging cycles at 0.5C, it had capacity retention of 91.6%. |
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| Keywords: | lithium-rich surface modification cathode cyclic stability |
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