Hollow Reduced Graphene Oxide-NiCo Hydroxide Nanowall Hydrid Structure for High-Performance Supercapacitor
- Authors
- Lim, HD[Lim, Hyeong Dae]; Kang, BK[Kang, Bong Kyun]; Tiruneh, SN[Tiruneh, Sintayehu Nibret]; Yoon, DH[Yoon, Dae Ho]
- Issue Date
- Jul-2017
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Hollow Structure; LBL; rGO@NiCo Hydroxide; NiCo Hydroxide Nanowall
- Citation
- SCIENCE OF ADVANCED MATERIALS, v.9, no.7, pp.1241 - 1247
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCIENCE OF ADVANCED MATERIALS
- Volume
- 9
- Number
- 7
- Start Page
- 1241
- End Page
- 1247
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/28485
- DOI
- 10.1166/sam.2017.2787
- ISSN
- 1947-2935
- Abstract
- We fabricated the core shell structures of Polystyrene (PS)/negatively and positively charged reduced graphene oxide (rGO) through Layer-By-Layer (LBL) method. And the very rough Nickel-Cobalt hydroxide nanowall was attached on the rGO surface by hydrothermal synthesis. After that we successfully removed core material PS using toluene. Finally, hollow rGO@NiCo hydroxide nanowall was achieved. When evaluated as an electrode material for supercapacitor devices, the high capacitances of 518.4, 425.25, 314.55, 269.55, 242.28 and 203.4 F g(-1) at the different current densities of 0.5, 1, 2, 4, 6 and 8 A g(-1) respectively. They also represented superior cycling stability of 97.6% retention after cycling testing up to 3,000 times at 2 A g(-1). Thus, the hollow rGO@NiCo hydroxide nanowall exhibited a prominent improvement in electrochemical performance.
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Collections - Engineering > School of Advanced Materials Science and Engineering > 1. Journal Articles
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