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LiVOPO 4 ‐Modified Lithium‐Rich Layered Composite Cathodes for High‐Performance Lithium‐Ion Batteries
Author(s) -
Li Tongxin,
Li Donglin,
Zhang Wei,
Kong Xiangze,
Zhang Peiqi,
Ren Xuqiang,
Zhang Qingbo,
Gao Jianhang,
Fan Xiaoyong,
Gou Lei
Publication year - 2021
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202001374
Subject(s) - materials science , cathode , lithium (medication) , electrolyte , coating , composite number , ion , chemical engineering , oxide , composite material , electrode , metallurgy , chemistry , medicine , organic chemistry , engineering , endocrinology
Li‐rich layered oxide Li 1.2 Ni 0.13 Co 0.13 Mn 0.54 O 2 (LNCMO) is a promising cathode material for high‐energy‐density lithium‐ion batteries (LIBs). However, it suffers from severe capacity fading and voltage decay, especially at high voltage (>4.5 V). In this study, we successfully design an active LiVOPO 4 (LVOP) coating on the LNCMO surface. The LNCMO/LVOP composites exhibit enhanced rate capability and largely improved cycling stability during long‐term cycling. Such superior performances can be attributed to the active LVOP coating layer, which can suppress the parasitic reactions between the LNCMO surface and the electrolyte. This work shows the potential for designing Li‐rich layered composite cathode materials by coating the active phase for high energy/power LIBs.