In Situ Induced Lattice‐Matched Interfacial Oxygen‐Passivation‐Layer Endowing Li‐Rich and Mn‐Based Cathodes with Ultralong Life

Autor: Wei He, Yanping Zhuang, Jie Mei, Weibin Guo, Feng Chen, Zhanying Chang, Mengjian Fan, Chuan Liu, Laisen Wang, Pengfei Liu, Zi‐Zhong Zhu, Qingshui Xie, Dong‐Liang Peng
Rok vydání: 2022
Předmět:
Zdroj: Small. 18:2200942
ISSN: 1613-6829
1613-6810
DOI: 10.1002/smll.202200942
Popis: The high capacity of Li-rich and Mn-based (LRM) cathode materials is originally due to the unique hybrid anion- and cation redox, which also induces detrimental oxygen escape. Furthermore, the counter diffusion of released oxygen (into electrolyte) and induced oxygen vacancies (into the interior bulk phase) that occurs at the interface will cause uncontrolled phase collapse and other issues. Therefore, due to its higher working voltage (4.7 V) than the activation voltage of lattice oxygen in LRM (≈4.5 V), the anion-redox-free and structurally consistent cobalt-free LiNi
Databáze: OpenAIRE
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