High-performance supercapacitor based on multi-structural CuS@polypyrrole composites prepared by in situ oxidative polymerization
2013; Royal Society of Chemistry; Volume: 2; Issue: 10 Linguagem: Inglês
10.1039/c3ta13859c
ISSN2050-7488
AutoresHui Peng, Guofu Ma, Kanjun Sun, Jingjing Mu, Hui Wang, Ziqiang Lei,
Tópico(s)Advanced Sensor and Energy Harvesting Materials
ResumoWe have developed a supercapacitor electrode composed of CuS microspheres with polypyrrole (PPy) uniformly inserted into the sheet-like subunit structure and coated onto the CuS surface to enhance the pseudocapacitive performance. Novel sphere-like CuS particles with intertwined sheet-like subunit structure are fabricated by a solvothermal approach without any surfactant or template. A CuS@PPy composite electrode is prepared by in situ oxidation polymerization of pyrrole in the presence of the CuS suspension. The CuS@PPy composite (CuS content is 16.7 wt%) exhibits a high specific capacitance of 427 F g−1 (at 1 A g−1) and its capacitance can still retain 88% after 1000 cycles.
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