Electrochemical Performance of Porous Carbon/Tin Composite Anodes for Sodium-Ion and Lithium-Ion Batteries

被引：784

作者：

Xu, Yunhua ^{[1
]}

Zhu, Yujie ^{[1
]}

Liu, Yihang ^{[1
]}

Wang, Chunsheng ^{[1
]}

机构：

[1] Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA

来源：

ADVANCED ENERGY MATERIALS | 2013年 / 3卷 / 01期

关键词：

tin; porous carbon; anodes; sodium-ion batteries; energy storage; ENERGY-STORAGE; HIGH-CAPACITY; ELECTRODE; STABILITY; INSERTION; OXIDE;

D O I：

10.1002/aenm.201200346

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：

The electrochemical performance of mesoporous carbon (C)/tin (Sn) anodes in Na-ion and Li-ion batteries is systematically investigated. The mesoporous C/Sn anodes in a Na-ion battery shows similar cycling stability but lower capacity and poorer rate capability than that in a Li-ion battery. The desodiation potentials of Sn anodes are approximately 0.21 V lower than delithiation potentials. The low capacity and poor rate capability of C/Sn anode in Na-ion batteries is mainly due to the large Na-ion size, resulting in slow Na-ion diffusion and large volume change of porous C/Sn composite anode during alloy/dealloy reactions. Understanding of the reaction mechanism between Sn and Na ions will provide insight towards exploring and designing new alloy-based anode materials for Na-ion batteries.

引用

页码：128 / 133

页数：6

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