Carbon coated flower like Bi2S3 grown on nickel foam as binder-free electrodes for electrochemical hydrogen and Li-ion storage capacities. (10th August 2015)

• Record Type: Journal Article
• Authors: Jin, Rencheng; Li, Guihua; Zhang, Zhengjiang; Yang, Li-Xia; Chen, Gang
• Is Part Of: Electrochimica acta. Volume 173(2015)
• Page Start: 458
• Page End: 464
• Publication Date: 2015-08-10
• Subjects: Bismuth sulfide -- electrochemical hydrogen storage -- lithium-ion batteries -- binder free -- porous structure; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.05.021
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Carbon coated flower like Bi2 S3 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 Bi2 S3 @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.