典型文献
Mechanism exploration of enhanced electrochemical performance of single-crystal versus polycrystalline LiNi0.8Mn0.1Co0.1O2
文献摘要:
Single-crystal LiNi0.8Mn0.1Co0.1O2(SC-811),which offers better cycle performance compared to the polycrystalline counterpart,has received great attention.We report herein the synthesis of SC-811 with a grain size of 2-4 μm by washing and reheating method,which compares with conventional polycrystalline LiNi0.8-Co0.1Mn0.1O2(PC-811).The discharge capacity of SC-811 reaches 152.1 mAh·g-1 after 100 cycles(86.7%capacity retention)at 1.0C,which is much better than that of PC-811(130.2 mAh·g-1,73.8%capacity retention).By using multiscale characterization,the results unveil that SC-811 can not only improve the reversibility of the H2-H3 phase transitions,suppress the generation of micro-cracks and phase transformations,but also mitigate the undesired side reactions between electrode and electrolyte.Besides,the Li-O bond of SC-811 is longer than that of PC-811,which is conducive to the de-intercalation of Li-ions,thereby enhancing the structural stability.This finding provides an impressive strategy to sustain structural stability and improve the cycling life of Ni-rich layered cathodes.
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作者姓名:
Tian-Yi Zeng;Xiao-Yun Zhang;Xing-Yu Qu;Mei-Qing Li;Pan-Pan Zhang;Ming-Ru Su;Ai-Chun Dou;Ahmad Naveed;Yu Zhou;Yun-Jian Liu
作者机构:
School of Material Science and Engineering,Jiangsu University,Zhenjiang 212013,China
文献出处:
引用格式:
[1]Tian-Yi Zeng;Xiao-Yun Zhang;Xing-Yu Qu;Mei-Qing Li;Pan-Pan Zhang;Ming-Ru Su;Ai-Chun Dou;Ahmad Naveed;Yu Zhou;Yun-Jian Liu-.Mechanism exploration of enhanced electrochemical performance of single-crystal versus polycrystalline LiNi0.8Mn0.1Co0.1O2)[J].稀有金属(英文版),2022(11):3783-3794
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0.628733
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