An advanced lithium-ion battery based on a nanostructured Sn-C anode and an electrochemically stable LiTFSi-Py24TFSI ionic liquid electrolyte

被引：70

作者：

Hassoun, J. ^{[1
]}

Fernicola, A. ^{[1
]}

Navarra, M. A. ^{[1
]}

Panero, S. ^{[1
]}

Scrosati, B. ^{[1
]}

机构：

[1] Univ Roma Sapienza, Dipartimento Chim, I-00185 Rome, Italy

来源：

JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 02期

关键词：

Lithium-tin alloy; Ionic liquid; Lithium-ion; Battery; PERFORMANCE; COMPOSITE;

D O I：

10.1016/j.jpowsour.2009.07.046

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report here a detailed impedance analysis of the interface between a selected IL electrolyte, i.e. a solution of lithium N, N-bis(trifluoromethane sulfon) imide in N-n-butyl-N-ethyl pyrrolidinium and a N, N-bis(trifluoromethane sulfon) imide, LiTFSI-Py24TFSI, and two electrodes, namely a conventional lithium metal and an advanced nanostructured Sn-C alloy, respectively. We show that the Sn-C alloy, in virtue of a specific formation of a surface protecting film, has an interface much more stable than that of the Li electrode. This favourable property is exploited for using Sn-C as a new anode for the development of an advanced lithium-ion battery based on LiTFSI-Py24TFSI as the electrolyte and on olivine LiFePO4 as the cathode. The results demonstrated that this battery has very promising performances in terms of cycle life and rate capability. (C) 2009 Elsevier B. V. All rights reserved.

引用

页码：574 / 579

页数：6

共 24 条

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