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Title: MS2 (M = Co and Ni) hollow spheres with tunable interiors for high-performance supercapacitors and photovoltaics
Authors: Peng, S.
Li, L.
Tan, H.
Cai, R.
Shi, W.
Li, C.
Mhaisalkar, S.G.
Srinivasan, M.
Ramakrishna, S. 
Yan, Q.
Keywords: dye-sensitized solar cells
hollow spheres
metal sulfides
Issue Date: 16-Apr-2014
Citation: Peng, S., Li, L., Tan, H., Cai, R., Shi, W., Li, C., Mhaisalkar, S.G., Srinivasan, M., Ramakrishna, S., Yan, Q. (2014-04-16). MS2 (M = Co and Ni) hollow spheres with tunable interiors for high-performance supercapacitors and photovoltaics. Advanced Functional Materials 24 (15) : 2155-2162. ScholarBank@NUS Repository.
Abstract: We demonstrate in this paper facile synthesis of CoS2 and NiS2 hollow spheres with various interiors through a solution-based route. The obtained CoS2 microspheres constructed by nanosheets display a three-dimensional architecture with solid, yolk-shell, double-shell, and hollow interiors respectively, with continuous changes in specific surface areas and pore-size distributions. Especially, the CoS2 hollow spheres demonstrate excellent supercapacitive performance including high specific capacitance, good charge/discharge stability and long-term cycling life, owing to the greatly improved faradaic redox reaction and mass transfer. Furthermore, CoS2 hollow spheres exhibit superior electrocatalytic activity for disulfide/thiolate (T2/T-) redox electrolyte in dye-sensitized solar cells (DSCs). Therefore, this work provides a promising approach for the design and synthesis of structure tunable materials with largely enhanced supercapacitor behavior, which can be potentially applied in energy storage devices. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Source Title: Advanced Functional Materials
ISSN: 16163028
DOI: 10.1002/adfm.201303273
Appears in Collections:Staff Publications

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