Journal
RSC ADVANCES
Volume 4, Issue 89, Pages 48666-48670Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra05763e
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Funding
- Institute for Clean Energy & Advanced Materials (Southwest University, Chongqing, China)
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies
- Chongqing Science and Technology Commission [cstc2012gjhz90002]
- Chongqing development and reform commission and National Natural Scientific Fund [21375108]
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Nanostructured Bi2S3 has been used in various energy conversion and storage systems, but it alone does not possess significant capacitance and this has never been investigated. A modification at the nanoscale is used to create a structure composed of Bi2S3 nanorods and alpha-Co(OH)(2) nanosheets, which is controllably synthesized by a facile seed-layer assisted hydrothermal method to produce the former followed by electrochemical deposition of the latter. The Co(OH)(2)-modified Bi2S3 nanorods significantly boost the pseudocapacitance of Bi2S3 for high specific capacitance, while improving the cycle life stability. Results reveal that the controlled Co(OH)(2) modification process promotes a networked, highly porous structure for a considerably larger surface allowing the electrolyte-access; thus, enhancing the pseudocapacitance and resulting in a high specific capacitance.
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