期刊
ELECTROCHIMICA ACTA
卷 173, 期 -, 页码 458-464出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.05.021
关键词
Bismuth sulfide; electrochemical hydrogen storage; lithium-ion batteries; binder free; porous structure
资金
- Natural Science Foundation of China [21301086]
- Natural Science Foundation of Shandong Province [ZR2013BQ008]
- Shangdong Province Young and Middle-Aged Scientists Research Awards Fund [BS2013CL035]
- Talent Introduction Fund of Ludong University [LY2013014]
Carbon coated flower like Bi2S3 on nickel foam are simply fabricated by a solvothermal synthesis method accompanying with glucose as a precursor of subsequent carbonization. The architectures are directly used as electrodes for electrochemical hydrogen and Li-ion storage. Such architectures display high electrochemical hydrogen storage and the discharging capacity of 165 mAh g (1) is obtained. When used as anode material, the binder free Bi2S3@C/Ni electrode delivers superior cycling stability and rate capability. Discharge capacity reaches as high as 698 mAh g(-1) after 50 cycles at a current density of 100 mA g (1). Even at 1000 mA g (1), the capacity still remains at 510 mAh g (1) after 40 cycles. The superior performance can be ascribed to the unique electrode. The porous electrode gives more reaction sites and accommodates volume change during cycling; while the carbon shell improves electronic conductivity and suppresses particle aggregation. (C) 2015 Elsevier Ltd. All rights reserved.
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