Improved Electrochemical Performance of Na3V2-xZrx(PO4)(3)/C Through Electronic and Ionic Conductivities Regulation

doi:10.1149/1945-7111/ab812b

HFCAS OpenIR

	Improved Electrochemical Performance of Na3V2-xZrx(PO4)(3)/C Through Electronic and Ionic Conductivities Regulation
	Ma, Hongyang 1,2; Zhao, Bangchuan1 ; Bai, Jin 1,2; Li, Kunzhen 1,2; Fang, Zhitang 1,2; Wang, Peiyao 1,2; Li, Wanyun 1,2; Zhu, Xuebin1 ; Sun, Yuping1,3
	2020-04-02
发表期刊	JOURNAL OF THE ELECTROCHEMICAL SOCIETY
ISSN	0013-4651
通讯作者	Zhao, Bangchuan(bchzhao@issp.ac.cn)
摘要	Electronic and ionic conductivities are two key parameters in determining the electrochemical performance of lithium/sodium ion batteries, and element-doping is an effective way to regulate the conductivity of an active material. In this work, we attempt to modify the electronic and ionic conductivities of Na3V2(PO4)(3)/C cathode through a proper content of Zr-doping and the two kinds of conductivities are distinguished by an ion-blocking measurement method. All Zr-doped samples display significant increase of the electronic conductivity and the x = 0.1 sample possesses the highest value of the electronic conductivity. The ionic conductivity shows a similar variation trend, but the variation value is far smaller than that of the electronic conductivity. The increase of the electronic conductivity is about one order larger than that of the ionic conductivity as x increases from 0 to 0.1. The enhanced electronic and ionic conductivities can considerably improve the cycling and rate performance of the sodium ion batteries using Na3V2(PO4)(3)/C cathode, especially the rate performance. The x = 0.1 electrode exhibits a much higher capacity in the whole cycling process after 1000 cycles at 10 C rate and its capacity at 50 C is about 5 times larger than that of the pristine sample. (C) 2020 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.orgilicenses/ by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
DOI	10.1149/1945-7111/ab812b
关键词[WOS]	CATHODE MATERIALS ; NA3V2(PO4)(3) CATHODE ; DOPED NA3V2(PO4)(3)/C ; BATTERIES
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program[2017YFA0402800] ; National Natural Science Foundation of China[U1732160]
项目资助者	National Key Research and Development Program ; National Natural Science Foundation of China
WOS研究方向	Electrochemistry ; Materials Science
WOS类目	Electrochemistry ; Materials Science, Coatings & Films
WOS记录号	WOS:000524009700001
出版者	ELECTROCHEMICAL SOC INC
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/103594
专题	中国科学院合肥物质科学研究院
通讯作者	Zhao, Bangchuan
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Ma, Hongyang,Zhao, Bangchuan,Bai, Jin,et al. Improved Electrochemical Performance of Na3V2-xZrx(PO4)(3)/C Through Electronic and Ionic Conductivities Regulation[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2020,167.
APA	Ma, Hongyang.,Zhao, Bangchuan.,Bai, Jin.,Li, Kunzhen.,Fang, Zhitang.,...&Sun, Yuping.(2020).Improved Electrochemical Performance of Na3V2-xZrx(PO4)(3)/C Through Electronic and Ionic Conductivities Regulation.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,167.
MLA	Ma, Hongyang,et al."Improved Electrochemical Performance of Na3V2-xZrx(PO4)(3)/C Through Electronic and Ionic Conductivities Regulation".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 167(2020).