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Fluorination from Surface to Bulk Stabilizing High Nickel Cathode Materials with Outstanding Electrochemical Performance
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2024-12-19 , DOI: 10.1002/anie.202420413
Jieyu Yang, Guihong Mao, Tengyu Yao, Laifa Shen, Yan Yu

Through interfacial fluorination and introducing F ions to bulk phase as anchors, the high-voltage high-rate cycling performance of high nickel cathodes is boosted. The fluorinated surface induces the formation of a thin, dense CEI layer to facilitate Li+ migration and hinder electrolyte erosion. Additionally, the substitution of F for O in bulk phase forms strong TM−F bonds, thereby enhancing surface and internal structural stability, and hindering the formation of microcracks and gas evolution.

中文翻译:


从表面到块体的氟化稳定具有出色电化学性能的高镍阴极材料



通过界面氟化并将 F 离子作为锚定引入体相,提高了高镍正极的高压高倍率循环性能。氟化表面诱导形成薄而致密的 CEI 层,以促进 Li+ 迁移并阻止电解质腐蚀。此外,在体相中 F 取代 O 形成强 TM-F 键,从而增强表面和内部结构稳定性,并阻止微裂纹的形成和气体逸出。
更新日期:2024-12-19
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