阴极
电化学
涂层
材料科学
图层(电子)
电极
化学工程
锂(药物)
沉积(地质)
复合材料
化学
医学
生物
工程类
内分泌学
物理化学
古生物学
沉积物
作者
Dong Hyup Jeon,Sangwon Kim,Jae‐Joong Kim,Suhyun Lee,Young Je Kim,Sang Cheol Nam,Jung‐Hoon Song
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2022-11-01
卷期号:169 (11): 110533-110533
被引量:3
标识
DOI:10.1149/1945-7111/aca2e1
摘要
Ni-rich NCM-based cathode materials have garnered significant research interest for the development of high-performance lithium-ion batteries (LIBs) owing to their high energy capacity and low cost. However, they undergo several electrochemical degradation reactions that deteriorate the cathode performance. To alleviate the deterioration of the cathode, researchers have adopted surface coating materials, especially Li 3 BO 3 (LBO), which demonstrates a superior modification effect, for Ni-rich NCM. Here, we investigate the electrochemical characteristics of an LBO-coated Ni-rich NCM cathode via experimental and numerical approaches. The cathode is synthesized through a wet chemical deposition method, and electrochemical measurements are conducted using coin half-cells. To further understand the effect of coating layer on the electrochemical performance, we developed an electrode coating model with modifying the porous electrode model. The model employs an impurity layer (Li 2 CO 3 and LiOH), a protective layer (LiF), and a coating layer (LBO) to predict the discharge performance of LIBs. The validation results of the model are consistent with the experimental results. Electrochemical prediction results demonstrate that the LBO-coated Ni-rich NCM cathode would increase the discharge capacity.
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