期刊论文

Li, LJ

英文

Chemical Engineering Journal

1385-8947

2023

476

146793

10.1016/j.cej.2023.146793

In summary, two spherical precursors with different grain sizes have been employed to study the correlation between mechanical strength and structural stability of Ni-rich cathodes. Importantly, the effect of precursor grain size on the electrochemical properties of resulted Ni-rich cathode have been systematically investigated. It is found that the two NCM cathode materials exhibits the almost identical physicochemical properties, which demonstrates the similar electrochemical performances at

本校为第一且通讯机构

Layered Ni-rich transition metal oxides (LiNixCoyMnzO2, x + y + z = 1, NCM) are regarded as promising cathodes for high-energy Li-ion batteries, due to merits of large capacity and low cost. However, the formed microcracks during cycling can lead to severe structural degradation, rapidly deteriorating properties of NCM cathode. To solve this problem, an enhanced mechanical strength strategy triggered by regulating the grain size of precursor has been successfully proposed, which is aimed at improving the structural stability of NCM cathode. It is found that NCM cathode featured with small grai...