Dice-Like Nanostructure of a CuS@PbS Composite for High-Performance Supercapacitor Electrode Applications

Ikkurthi Kanaka Durga, S. Srinivasa Rao, Jin-Woo Ahn, Tae-Yong Park, Bak Jin-Soo, Cho-In Ho, K. Prabakar and Hee-Je Kim
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Ikkurthi Kanaka Durga: School of Electrical Engineering, Pusan National University, Busandaehak-ro 63beongil, Geumjeong-gu, Busan 46241, Korea
S. Srinivasa Rao: Department of Mechatronics Engineering, KyungSung University, 309 Suyeong-ro Nam-gu, Busan 48434, Korea
Jin-Woo Ahn: Department of Mechatronics Engineering, KyungSung University, 309 Suyeong-ro Nam-gu, Busan 48434, Korea
Tae-Yong Park: School of Electrical Engineering, Pusan National University, Busandaehak-ro 63beongil, Geumjeong-gu, Busan 46241, Korea
Bak Jin-Soo: School of Electrical Engineering, Pusan National University, Busandaehak-ro 63beongil, Geumjeong-gu, Busan 46241, Korea
Cho-In Ho: School of Electrical Engineering, Pusan National University, Busandaehak-ro 63beongil, Geumjeong-gu, Busan 46241, Korea
K. Prabakar: School of Electrical Engineering, Pusan National University, Busandaehak-ro 63beongil, Geumjeong-gu, Busan 46241, Korea
Hee-Je Kim: School of Electrical Engineering, Pusan National University, Busandaehak-ro 63beongil, Geumjeong-gu, Busan 46241, Korea

Energies, 2018, vol. 11, issue 7, 1-11

Abstract: A cost-effective and uniform crystal with different structures was fabricated using a facile chemical bath deposition technique for electrochemical supercapacitor (SC) applications. In this study, CuS, PbS, and CuS@PbS composite electrodes were fabricated for SCs. The morphology and structure of the electrodes were analyzed by field emission–scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The CuS@PbS composite electrode delivered outstanding electrochemical performance in SCs with a high specific capacitance of 1004.42 F g −1 at a current density of 2.85 A g −1 , good cycling stability (only 2.9% loss after 3000 cycles at 2.85 A g −1 ), higher energy density of 33.89 Wh kg −1 at a power density of 714.28 W kg −1 , and an excellent rate capability compared to other electrodes. These results show that the CuS@PbS composite can be used to improve the surface morphology and is a promising positive electrode material for SC applications.

Keywords: supercapacitors; CuS@PbS composite; chemical bath deposition; cyclic voltammetry (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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