Electrodeposited nickel aluminum-layered double hydroxide on Co3O4 as binder-free electrode for supercapacitor
- Authors
- Xin Chen; Heng Yuzhi; Li Hui; Bae, Sungchul; Ang, Li; Wang, Zhen; Hui, Kwan San; Hui, Kwun Nam; Nezhad, Erfan Zal
- Issue Date
- Feb-2019
- Publisher
- SPRINGER
- Citation
- JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, v.30, no.3, pp.2419 - 2430
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
- Volume
- 30
- Number
- 3
- Start Page
- 2419
- End Page
- 2430
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/148374
- DOI
- 10.1007/s10854-018-0515-x
- ISSN
- 0957-4522
- Abstract
- Here, we report a heterostructured core-shell electrode consists of cobalt oxide (Co3O4) nanowire core and nickel aluminum (NiAl)-layered double hydroxide (NiAl-LDH; herein Co3O4@LDH) nanosheet shell grown on nickel foam as advanced electrode for supercapacitor. Benefiting from the core-shell configuration and smart hybridization, the optimized Co3O4@LDH core-shell electrode exhibits a high capacitance of 2011Fg(-1) at 2Ag(-1) and remains 1455Fg(-1) at 40Ag(-1), which outperforms the electrochemical performance of individual component of Co3O4 (720Fg(-1) at 2Ag(-1)). A hybrid supercapacitor using Co3O4@LDH as positive electrode and carbon nanotube as negative electrode delivers an energy density of 18.1Whkg(-1) at a power density of 375kWkg(-1) at a current density of 0.5Ag(-1). Smart hybridization of core-shell electrode shows great promise as advanced electrode materials for supercapacitor with high electrochemical performance.
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