Oxygen-Containing Functional Groups Regulating the Carbon/Electrolyte Interfacial Properties Toward Enhanced K+ Storage

Nano-Micro Letters

Hui Liu¹  Aiping Hu²  Rui Zhang²  Peng Gao²  Jilei Liu²  Xiaohua Chen²  Jianfang Wu²  Yufan Peng²  Wang Zhou²  Zhen Chen³ 

[1] College of Chemistry and Material Science, Hunan Agricultural University, 410128, Changsha, People’s Republic of China;College of Materials Science and Engineering, Hunan Joint International Laboratory of Advanced Materials and Technology of Clean Energy, Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology, Hunan University, 410082, Changsha, People’s Republic of China;Electrochemistry I, Helmholtz Institute Ulm (HIU), 89081, Ulm, Germany;Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany;

关键词: Oxygen-containing functional groups;    Solid electrolyte interphase;    In situ spectroscopic characterization;    Potassium ion batteries;   

DOI  :  10.1007/s40820-021-00722-3

来源: Springer

【 摘 要 】

tsOxygen functional groups improve rate capability as well as long-term cycling stability of graphite oxide.The adsorption-intercalation hybrid K+ storage mechanism of graphite oxide (GO) is elucidated by in situ Raman spectroscopy and systematic electrochemical characterization.It is unraveled that the C = O and COOH rather than C-O-C and OH groups contribute to the formation of highly conductive, intact and robust solid electrolyte interphase.

【 授权许可】

CC BY