Electrochemical properties of the solid polymer electrolyte PEO(20)-LiSO(3)CF(3)-Urea(1.5)
文献类型：期刊论文
| 作者 | Zhang, Ding1; Yan, Hui1; Zhang, Huan; Zhu, Zhi1,2; Qilu1 |
| 刊名 | SOLID STATE IONICS
 |
| 出版日期 | 2011-09-28 |
| 卷号 | 199页码:32-36 |
| 关键词 | Solid Polymer Electrolyte Urea Polymer Ethylene Oxide Solution-casting Technique |
| ISSN号 | 0167-2738 |
| DOI | 10.1016/j.ssi.2011.03.003 |
| 英文摘要 | In this work, a new type of solid polymer electrolyte, formulated as PEO(20)-LiSO(3)CF(3)-Urea(x), is prepared by solution-casting technique. Among the different urea-containing samples, PEO(20)-LiTf-Urea(1.5) presents an optimum ambient temperature ionic conductivity of 5.1 x 10(-6) S/cm, enhanced by nearly 100 times over the PEO(20)-LiTf system. The mechanism for the increase in conductivity is discussed by the joint analysis of DSC and ATR-IR measurements. Urea molecules coordinate with lithium ions via carbonyl groups, which efficiently decrease the concentration of triple cations [Li(2)Tf](+). The addition of urea results in augmented cation transference and increased interface impedance. Analysis of the salt diffusion coefficient confirms that urea enhances the transport of lithium salts. The prepared SPE is tested by galvanostatic charge-discharge cycling in lithium secondary cells. Data obtained for PEO(20)-USO(3)CF(3)-Urea(1.5) reveals that the upper voltage limit in the LiCoO(2)-based cells should be about 4.0 V versus Li/Li(+). (C) 2011 Published by Elsevier B.V. |
| 语种 | 英语 |
| WOS记录号 | WOS:000297432300006 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/72359]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Qilu |
| 作者单位 | 1.Peking Univ, Beijing Natl Lab Mol Sci, Inst Appl Chem, Coll Chem & Mol Engn, Beijing 100871, Peoples R China 2.CITIC GUOAN MGL Co, Beijing 102200, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Ding,Yan, Hui,Zhang, Huan,et al. Electrochemical properties of the solid polymer electrolyte PEO(20)-LiSO(3)CF(3)-Urea(1.5)[J]. SOLID STATE IONICS,2011,199:32-36. |
| APA | Zhang, Ding,Yan, Hui,Zhang, Huan,Zhu, Zhi,&Qilu.(2011).Electrochemical properties of the solid polymer electrolyte PEO(20)-LiSO(3)CF(3)-Urea(1.5).SOLID STATE IONICS,199,32-36. |
| MLA | Zhang, Ding,et al."Electrochemical properties of the solid polymer electrolyte PEO(20)-LiSO(3)CF(3)-Urea(1.5)".SOLID STATE IONICS 199(2011):32-36. |
入库方式： OAI收割
来源：化学研究所
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