Controlling SEI Formation on SnSb-Porous Carbon Nanofibers for Improved Na Ion Storage

被引：466

作者：

Ji, Liwen ^{[1
]}

Gu, Meng ^{[1
]}

Shao, Yuyan ^{[1
]}

Li, Xiaolin ^{[1
]}

Engelhard, Mark H. ^{[1
]}

Arey, Bruce W. ^{[1
]}

Wang, Wei ^{[1
]}

Nie, Zimin ^{[1
]}

Xiao, Jie ^{[1
]}

Wang, Chongmin ^{[1
]}

Zhang, Ji-Guang ^{[1
]}

Liu, Jun ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Richland, WA 99352 USA

来源：

ADVANCED MATERIALS | 2014年 / 26卷 / 18期

关键词：

Na-ion battery; solid electrolyte interphase (SEI) layer; fluoroethylene carbonate (FEC); electrochemical performance; SOLID-ELECTROLYTE INTERPHASE; RAY PHOTOELECTRON-SPECTROSCOPY; ANODE MATERIAL; ELECTROCHEMICAL NA; NEGATIVE ELECTRODE; SURFACE-CHEMISTRY; HIGH-CAPACITY; SODIUM; LITHIUM; BATTERY;

D O I：

10.1002/adma.201304962

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Porous carbon nanofiber (CNF)-supported tin-antimony (SnSb) alloys are synthesized and applied as a sodium-ion battery anode. The chemistry and morphology of the solid electrolyte interphase (SEI) film and its correlation with the electrode performance are studied. The addition of fluoroethylene carbonate (FEC) in the electrolyte significantly reduces electrolyte decomposition and creates a very thin and uniform SEI layer on the cycled electrode surface, which an promote the kinetics of Na-ion migration/ transportation, leading to excellent electrochemical performance. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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页码：2901 / 2908

页数：8

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