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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
- 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.
- Subjects :
- Materials science
General Chemical Engineering
Tin selenide
Sodium
Volume variation
chemistry.chemical_element
02 engineering and technology
Cu doped
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
0104 chemical sciences
Nanoclusters
Anode
chemistry.chemical_compound
chemistry
Chemical engineering
Cu doping
0210 nano-technology
Subjects
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