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题名: Improving the electrochemical performance of Na3V2(PO4)(3) cathode in sodium ion batteries through Ce/V substitution based on rational design and synthesis optimization
作者: Zheng, Qiong1;  Yi, Hongming1, 2;  Liu, Wanqiu1, 2;  Li, Xianfeng1, 3;  Zhang, Huamin1, 3
关键词: Na3V2(PO4)(3) ;  Ce/V substitution ;  Sodium ion batteries ;  Bulk phase characteristic ;  High mass loading
刊名: ELECTROCHIMICA ACTA
发表日期: 2017-06-01
DOI: 10.1016/j.electacta.2017.04.029
卷: 238, 页:288-297
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: Ce atom is employed to partially substitute V site in Na3V2(PO4)(3) (NVP) crystal structure to improve its bulk phase characteristic. The effect of Ce substitution on the crystal structure, morphology, electrochemical performance and kinetic property of NVP is investigated based on rational design and synthesis optimization. The results indicates that the moderate Ce substitution in the NVP crystal can effectively enhance the bulk phase electronic conductivity and Na+ mobility, which excludes the carbon coating effect for the first time. And Na3V1.96Ce0.04(PO4)(3)/C shows the best electrochemical performances among the Na3V2-xCex(PO4)(3)/C (x = 0, 0.02, 0.04, 0.06 and 0.1) samples. It delivers a discharge capacity of 118 mAh g(-1) at 0.2C and more than 100 mAh g(-1) even at 40C, which is currently the highest level by metallic ion doping. After 100 cycles, the capacity retention of Na3V1.96Ce0.04(PO4)(3)/C keeps higher than 99% at 10C. The outstanding performance of the moderate Ce-doping sample is verified further by the electrochemical performance test of the samples with high mass loading, which is highly beneficial to industrial applications of Na3V2(PO4)(3) cathode for high performance sodium ion batteries. (C) 2017 Elsevier Ltd. All rights reserved.
关键词[WOS]: DOPED LI3V2(PO4)(3)/C ;  RECHARGEABLE BATTERY ;  ELECTRODE MATERIAL ;  LITHIUM BATTERIES ;  ENERGY-STORAGE ;  NAFEPO4 ;  STABILITY ;  VOLTAGE ;  LIFEPO4
语种: 英语
WOS记录号: WOS:000401113500033
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152283
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian 116023, Peoples R China

Recommended Citation:
Zheng, Qiong,Yi, Hongming,Liu, Wanqiu,et al. Improving the electrochemical performance of Na3V2(PO4)(3) cathode in sodium ion batteries through Ce/V substitution based on rational design and synthesis optimization[J]. ELECTROCHIMICA ACTA,2017,238:288-297.
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