期刊
SMALL
卷 16, 期 31, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201907261
关键词
bimetallic sulfide; N-doping; pseudocapacitance; sodium-ion batteries; synergistic effects
类别
资金
- National Natural Science Foundation of China [51931006, 51871188]
- National Key RAMP
- D Program of China [2016YFA0202602]
- Fundamental Research Funds for the Central Universities of China (Xiamen University) [20720190013]
- Guangdong Basic and Applied Basic Research Foundation [2019A1515011070]
- Double-First Class Foundation of Materials Intelligent Manufacturing Discipline of Xiamen University
Designing and constructing bimetallic hierarchical structures is vital for the conversion-alloy reaction anode of sodium-ion batteries (SIBs). Particularly, the rationally designed hetero-interface engineering can offer fast diffusion kinetics in the interface, leading to the improved high-power surface pseudocapacitance and cycling stability for SIBs. Herein, the hierarchical zinc-tin sulfide nanocages (ZnS-NC/SnS2) are constructed through hydrothermal and sulfuration reactions. The unconventional hierarchical design with internal void space greatly optimizes the structure stability, and bimetallic sulfide brings a bimetallic composite interface and N heteroatom doping, which are devoted to high electrochemical activity and improved interfacial charge transfer rate for Na(+)storage. Remarkably, the ZnS-NC/SnS(2)composite anode exhibits a delightful reversible capacity of 595 mAh g(-1)after 100 cycles at 0.2 A g(-1), and long cycling capability for 500 cycles with a low capacity loss of 0.08% per cycle at 1 A g(-1). This study opens up a new route for rationally constructing hierarchical heterogeneous interfaces and sheds new light on efficient anode material for SIBs.
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