Contribution of titanium substitution on improving the electrochemical properties of P2-Na0.67Ni0.33Mn0.67O2 cathode material for sodium-ion storage
作者:Cao, ZJ (Cao, Zhijie)[ 1 ] ; Li, LJ (Li, Lijiang)[ 1 ] ; Zhou, CJ (Zhou, Chaojin)[ 2 ] ; Ma, XB (Ma, Xiaobo)[ 1 ] ; Wang, HL (Wang, Hailong)[ 1 ]
FUNCTIONAL MATERIALS LETTERS
卷: 13 期: 3
文献号: 2051010
DOI: 10.1142/S1793604720510108
出版年: APR 2020
文献类型:Article
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摘要
P2-type Na0.67Ni0.33Mn0.67-xTixO2(0 <= x <= 0.4) have been synthesized as cathode materials for sodium-ion batteries, and the effect of Ti substitution on the structural evolution and electrochemical properties of Na0.67Ni0.33Mn0.67O2 are investigated in detail. Analysis results indicate that an appropriate substituted amount of Mn with Ti in the MO2 layers effectively stabilize the crystal lattice of these layered electrodes during the Na+ insertion/extraction process, which significantly improves their electrochemical performances between 2.5 and 4.4V. The discharge/charge patterns and in situ X-ray diffraction measurements expound the successful suppression of Na+/vacancy ordering and multiphase transition during the de-sodiation/sodiation process to resist the structure-induced degradation, which provide possible guidelines for exploring high performances sodium-ion batteries.
关键词
作者关键词:Sodium-ion batteries; cathode material; Na0.67Ni0.33Mn0.67O2; Ti-substitution
KeyWords Plus:P2-TYPE NA2/3NI1/3MN2/3O2; HIGH-CAPACITY; PERFORMANCE; BATTERIES; TRANSITION; ELECTRODE; OXIDE
作者信息
通讯作者地址: Cao, ZJ (通讯作者)
显示更多Ningxia Univ, Sch Phys & Elect Elect Engn, Adv Energy Storage Mat & Devices Lab, Yinchuan 750021, Ningxia, Peoples R China.
地址:
显示更多[ 1 ] Ningxia Univ, Sch Phys & Elect Elect Engn, Adv Energy Storage Mat & Devices Lab, Yinchuan 750021, Ningxia, Peoples R China
显示更多[ 2 ] South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
电子邮件地址:caozhijie@nxu.edu.cn; merrick_whl@126.com
基金资助致谢
基金资助机构显示详情授权号
Ningxia Key Research and Development Program
2018BEE03002
Natural Science Foundation of Ningxia province
2018AAC03052
National Natural Science Foundation of China
51801107
Third Batch of Ningxia Youth Talents Supporting Program
TJGC2018090
Natural Science Foundation of Ningxia
2018AAC03050
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出版商
WORLD SCIENTIFIC PUBL CO PTE LTD, 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Materials Science
Web of Science 类别:Materials Science, Multidisciplinary