Fluorine-substituted O3-type NaNi0.4Mn0.25Ti0.3Co0.05O2-xFx cathode with improved rate capability and cyclic stability for sodium-ion storage at high voltage
作者:Zhou, CJ (Zhou, Chaojin)[ 1 ] ; Yang, LC (Yang, Lichun)[ 1 ] ; Zhou, CG (Zhou, Chaogang)[ 2 ] ; Liu, JW (Liu, Jiangwen)[ 1 ] ; Hu, RZ (Hu, Renzong)[ 1 ] ; Liu, J (Liu, Jun)[ 1 ] ; Zhu, M (Zhu, Min)[ 1 ]
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JOURNAL OF ENERGY CHEMISTRY
卷: 60 页: 341-350
DOI: 10.1016/j.jechem.2021.01.038
出版年: SEP 2021
文献类型:Article
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摘要
O3-type NaNiO2-based cathode materials undergo irreversible phase transition and serious capacity decay at high voltage above 4.0 V in sodium-ion batteries. To address these challenges, effects of F-substitution on the structure and electrochemical performance of NaNi0.4Mn0.25Ti0.3Co0.05O2 are investigated in this article. The F-substitution leads to expanding of interlayer, which can enhance the mobility of Na+. NaNi0.4Mn0.25Ti0.3Co0.05O1.92F0.08 (NMTC-F-0.08) with the optimal F-substitution degree exhibits much improved rate capability and cyclic stability. It delivers reversible capacities of 177 and 97 mAh g(-1) at 0.05 and 5 C within 2.0-4.4 V, respectively. Galvanostatic intermittent titration technique verifies faster kinetics of Na+ diffusion in NMTC-F-0.08. And in-situ XRD investigation reveals the phase evolution of NMTC-F-0.08, indicating enhanced structural stability results from F-substitution. This study may shed light on the development of high performance cathode materials for sodium-ion storage at high voltage. (C) 2021 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.
关键词
作者关键词:F-substitution; Sol-gel method; O3-type cathode; Sodium-ion battery; High-voltage cathode
KeyWords Plus:TRANSITION-METAL OXIDE; ELECTROCHEMICAL PERFORMANCE; NANI0.5MN0.5O2 CATHODE; RECHARGEABLE LITHIUM; BATTERIES; ELECTRODES; CAPACITY; NANIO2; REDOX; CO
作者信息
通讯作者地址:
South China University of Technology South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China.
通讯作者地址: Yang, LC; Zhu, M (通讯作者)
显示更多 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China.
地址:
显示更多 [ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China
显示更多 [ 2 ] North China Univ Sci & Technol, Coll Met & Energy, Key Lab, Minist Educ Modern Met Technol, Tangshan 063210, Hebei, Peoples R China
电子邮件地址:mslcyang@scut.edu.cn; memzhu@scut.edu.cn
基金资助致谢
基金资助机构显示详情 授权号
National Natural Science Foundation of China (NSFC)
NSFC51621001
Guangdong Special Support Program
2017TQ04N224
Guangdong Natural Science Funds for Distinguished Young Scholar
2017B030306004
Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme
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出版商
ELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry; Energy & Fuels; Engineering
Web of Science 类别:Chemistry, Applied; Chemistry, Physical; Energy & Fuels; Engineering, Chemical