Unraveling the chemical and structural evolution of novel Li-rich layered/rocksalt intergrown cathode for Li-ion batteries  

作　　者：Yongjian Li Xinyu Zhu Chenxi Wei Youyou Fang Xinyu Wang Yizhi Zhai Wenlong Kang Lai Chen Duanyun Cao Meng Wang Yun Lu Qing Huang Yuefeng Su Hong Yuan Ning Li Feng Wu 

机构地区：[1]School of Materials Science and Engineering,Beijing Key Laboratory of Environmental Science and Engineering,Beijing Institute of Technology,Beijing 100081,China [2]Chongqing Innovation Center,Beijing Institute of Technology,Chongqing 401120,China [3]Center for Transformative Science,ShanghaiTech University,Shanghai 201210,China [4]Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Chinese Chemical Letters》2024年第12期289-293,共5页中国化学快报（英文版）

基　　金：sponsored by National Natural Science Foundation of China(No.22109010);National Key R&D Program of China(No.2021YFC2902905);Beijing Nova Program,Chongqing Outstanding Youth Fund(No.2022NSCQ-JQX3895);Chongqing Talents Plan for Young Talents(No.CQYC202005032);The Key Project of Chongqing Technology Innovation and Application Development(No.2022TIAD-DEX0024);the support from Beijing Institute of Technology Research Fund Program for Young Scholars;the support by the Shanghai Sailing Program(No.2023×0308–103–01)。

摘　　要：The prototype material,Li_(1.23)Ru_(0.41)Ni_(0.36)O_(2),is proposed to gain the deep and comprehensive understanding of chemical and structural changes of the novel layered/rocksalt intergrown cathodes.Synchrotronbased X-ray absorption spectra and resonant inelastic X-ray scattering reveal that both cationic and anionic redox evolves in the charge compensation process of the intergrown material,while synchrotronbased extended X-ray fine structure spectra and in situ X-ray diffraction measurements demonstrates that the intergrown material undergoes minimal local-and long-range structural variations at deep de/lithiation.This work highlights the great potential of the intergrown structure to inspire the design of advanced cathode materials for lithium-ion batteries.

关 键 词：Cathode materials Intergrown structure Cationic-anionic redox Low strain Synchrotron characterizations 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ131.11[化学工程—无机化工]