Enhancing humidity resistance of nickel-rich layered cathode materials by low water-soluble CaF2 coating

Zijian Zhang; Jiajin Feng; Ran He; Yelong Zhang; Hangmin Zhu; Feng Wu; Qingguang Zeng; Hui Yu; Kwun Nam Hui; Xi Liu; Da Wang

doi:10.1039/D3CC05730E

Enhancing humidity resistance of nickel-rich layered cathode materials by low water-soluble CaF₂ coating†

Zijian Zhang,^a Jiajin Feng,^a Ran He,^a Yelong Zhang,

^a Hangmin Zhu,^a Feng Wu,^a Qingguang Zeng,^a Hui Yu,

^b Kwun Nam Hui,^c Xi Liu

*^b and Da Wang

*^a

Author affiliations

* Corresponding authors

^a School of Applied Physics and Materials, Wuyi University, Jiangmen, China
E-mail: dawang@mail.ustc.edu.cn

^b Guangdong-Hong Kong Joint Laboratory for New Textile Materials, College of Textile Science and Engineering, Wuyi University, Jiangmen, China
E-mail: liuxi@wyu.edu.cn

^c Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macao

Abstract

A low water-solubility but hydrophilic coating of CaF₂ is demonstrated to be effective in mitigating the susceptibility of nickel-rich cathodes to moisture and even water. The ability of the cathode to resist water erosion is not inherently linked to either hydrophobicity or hydrophilicity, but lies in robust chemical bonding within the protective layer exhibiting low water solubility.

Chemical Communications

Enhancing humidity resistance of nickel-rich layered cathode materials by low water-soluble CaF₂ coating†

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Enhancing humidity resistance of nickel-rich layered cathode materials by low water-soluble CaF₂ coating

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