材料科学
介电谱
循环伏安法
无定形固体
阴极
电化学
锂(药物)
离子
Boosting(机器学习)
分析化学(期刊)
化学工程
电极
化学
结晶学
计算机科学
物理化学
医学
色谱法
机器学习
工程类
内分泌学
有机化学
作者
Yunyan Li,Xifei Li,Junhua Hu,Wen Liu,Hirbod Maleki Kheimeh Sari,Dejun Li,Qian Sun,Liang Kou,Zhanyuan Tian,Lang Shao,Cheng Zhang,Jiujun Zhang,Xueliang Sun
出处
期刊:Energy & environmental materials
日期:2020-06-13
卷期号:3 (4): 522-528
被引量:22
摘要
In this work, an amorphous ZnO was coated on LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM) using a sol‐gel strategy method. The NCM coated with 1 wt.% ZnO and a thickness of about 3 nm exhibits an improved cycling performance, accompanied by a lower capacity fading (from 194.8 to 133.8 mAh g −1 , i.e., 68%) than that of the pristine one (i.e., only 34%) after 300 cycles at 0.2 C. The cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) indicate that the ZnO coating can improve extraction/insertion of Li + and inhibit the increase in impedance of the NCM cathode material. This approach may benefit the performance improvement of the Ni‐rich cathode materials in Lithium‐ion batteries (LIBs).
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