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Hierarchical Cu doped SnSe nanoclusters as high-performance anode for sodium-ion batteries

Hierarchical Cu doped SnSe nanoclusters as high-performance anode for sodium-ion batteries

Authors :
Qing Li
Zhengpei Miao
Jianyun Liu
Feng Ma
Shenzhou Li
Jiantao Han
Xian Chen
Yuyu Li
Rusong Chen
Jiashun Liang
Tanyuan Wang
Source :
Electrochimica Acta. 282:973-980
Publication Year :
2018
Publisher :
Elsevier BV, 2018.

Abstract

Tin selenide (SnSe) has been explored as a promising anode material for sodium ion batteries (SIBs) but its electrochemical performance is strictly limited by the large volume variation during charge/discharge process and relatively low electronic conductivity. In this work, hierarchical Cu doped SnSe nanoclusters were prepared by a cost-efficient and nontoxic method and demonstrated as a high-performance anode for SIBs. Under optimized Cu doping degree (10 wt% Cu), the developed Cu-SnSe anode exhibits excellent rate performance with a high capacity of 330 mAh/g at 20 A/g and outstanding stability with a capacity of 304 mAh/g after 1000 cycles at 5 A/g (0.1–3.0 V vs. Na/Na+). The enhanced electronic conductivity, facilitated sodiation/desodiation process, and relieved volume change during cycling in Cu doped SnSe benefited from Cu doping and the unique hierarchical structure should account for its extraordinary sodiun storage performance.

Details

ISSN :
00134686
Volume :
282
Database :
OpenAIRE
Journal :
Electrochimica Acta
Accession number :
edsair.doi...........8ff998139b8a0fcf5d6693913cb94504
Full Text :
https://doi.org/10.1016/j.electacta.2018.07.035