期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 8, 页码 6979-6987出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b13613
关键词
sodium ion batteries; anode; SnS2 nanowall arrays; PSE-CVD; rate capability
资金
- National Natural Science Foundation of China [21373184]
- Public Projects of Zhejiang Province [2015C31039]
- Fundamental Research Funds for the Central Universities [2016QNA4007, 2016XZZX005-07]
- Opening Project of CAS Key Laboratory of Materials for Energy Conversion [KF2016002]
Cost-effective sodium ion batteries (SIBs) are emerging as a desirable alternative choice to lithium ion batteries in terms of application in large-scale energy storage < devices. SnS2 is regarded as a potential anode material for SIBs because of its unique layered structure and high theoretiCal specific capacity. However, the development of SnS2 was hindered by the sluggish kinetics of the diffusion process and the inevitable volume change during repeated sodiation-desodiation processes. In this work, SnS2 with a unique nanowall array (NWA) structure is fabricated by one-step pulsed spray evaporation chemical vapor deposition (PSE-CVD), which could be used directly as binder-free and carbon-free anodes for SIBs. The SnS2 NWA electrode achieves a high reversible capacity of 576 mAh g(-1) at 500 mA g(-1) and enhanced cycling stability. Attractively, an excellent rate capability is demonstrated with similar to 370 mAh g(-1) at 5 A g(-1), corresponding to a capacity retention of 64.2% at 500 mA g(-1). The superior sodium storage capability of the SnS2 NWA electrode could be attributed to outstanding electrode design and a rational growth process, which favor fast electron and Na-ion transport, as well as provide steady structure for elongated cycling.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据