阴极
材料科学
电解质
兴奋剂
化学工程
涂层
储能
容量损失
锂(药物)
烧结
纳米技术
电极
光电子学
复合材料
化学
功率(物理)
物理化学
内分泌学
工程类
物理
医学
量子力学
作者
Huifang Zheng,Zhihong Wang,Ling Chen,Hao Jiang,Chunzhong Li
出处
期刊:Particuology
[Elsevier]
日期:2023-09-01
卷期号:80: 74-80
被引量:2
标识
DOI:10.1016/j.partic.2022.12.003
摘要
Ni-rich layered cathodes have become the promising candidates for the next-generation high-energy Li-ion batteries due to their high energy density and competitive cost. However, they suffer from rapid capacity fading due to the structural and interfacial instability upon long-term operation. Herein, the Ti-doped and LiYO2-coated Ni-rich layered cathode has been synthesized via a facile one-step sintering strategy, which significantly restrains the interfacial parasitic side reactions and enhances the structural stability. Specifically, the trace Ti4+ doping greatly stabilizes the lattice oxygen and alleviates the Li/Ni disorder while the LiYO2 coating layer can prevent the erosion of the cathode by the electrolyte during cycles. As a result, the Ti-NCM83@LYO delivers a high specific capacity of 135 mAh g−1 even at 10C and there is almost no capacity loss at 1C for 100 cycles. This work provides a simple one-step dual-modification strategy to meet the commercial requirements of Ni-rich cathodes.
科研通智能强力驱动
Strongly Powered by AbleSci AI