Effect of temperature on nonlinear electrical behavior and dielectric properties of (Ca, Ta)-doped TiO2 ceramics

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	Effect of temperature on nonlinear electrical behavior and dielectric properties of (Ca, Ta)-doped TiO2 ceramics
	Wang, WY ; Zhang, DF ; Xu, T ; Li, XF ; Zhou, T ; Chen, XL
刊名	MATERIALS RESEARCH BULLETIN
	2002
卷号	37 期号:6 页码:1197
关键词	ZINC-OXIDE VARISTORS CAPACITOR SYSTEM
ISSN号	0025-5408
通讯作者	Wang, WY: Chinese Acad Sci, Inst Phys, POB 603-23, Beijing 100080, Peoples R China.
中文摘要	Polymer electrolytes composed of polyacrylonitrile (PAN), propylene carbonate (PC), and lithium bis(trifluoromethane sulfone imide) [LiTFSI, LiN(CF3SO2)(2)] have been studied by Raman and ac impedance spectroscopy. It is found that the associations of Li+ ions with the polymer and with the solvent are two separate procedures. This makes it possible to study the influences of the polymer and the salt content on the conductivity seperately. Impedance study shows that the conductivity of the electrolyte is strongly dependent on the salt content, and a transition from "salt-in-polymer'' to "polymer-in-salt'' electrolyte is observed when the salt content is very high (at PC: PAN: LiTFSI 5 1: 1: 4 mole ratio). Raman spectroscopic study indicates that the interactions between the lithium ionic species and the polymer are striking after PAN is dissolved in the PC/LiTFSI solution. A new spectral component is observed at 2280 cm(-1) involving the interaction between the polymer and ionic cluster [Lim+TFSIn-] (m > n) (at PC: PAN: LiTFSI = 1:1:3) as well as the 2270 cm(-1) peak due to the nitrile-Li+ interaction. As the interaction between PAN and the ionic clusters and the transition of conduction behavior occur at a similar salt content, it is proposed that PAN plays distinct roles in the transportation of the ionic species in conventional "salt-in-polymer'' electrolyte and in the novel "polymer-in-salt'' electrolytes. (C) 2002 The Electrochemical Society.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/36584]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wang, WY,Zhang, DF,Xu, T,et al. Effect of temperature on nonlinear electrical behavior and dielectric properties of (Ca, Ta)-doped TiO2 ceramics[J]. MATERIALS RESEARCH BULLETIN,2002,37(6):1197.
APA	Wang, WY,Zhang, DF,Xu, T,Li, XF,Zhou, T,&Chen, XL.(2002).Effect of temperature on nonlinear electrical behavior and dielectric properties of (Ca, Ta)-doped TiO2 ceramics.MATERIALS RESEARCH BULLETIN,37(6),1197.
MLA	Wang, WY,et al."Effect of temperature on nonlinear electrical behavior and dielectric properties of (Ca, Ta)-doped TiO2 ceramics".MATERIALS RESEARCH BULLETIN 37.6(2002):1197.