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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
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.
更新日期:2024-12-20