Journal
CURRENT APPLIED PHYSICS
Volume 17, Issue 4, Pages 501-506Publisher
ELSEVIER
DOI: 10.1016/j.cap.2017.01.020
Keywords
Solvothermal process; Nickel cobalt hydroxide; Nanofoam structure; Electrochemical properties
Funding
- National research Foundation of Korea [2015M2A2A6A02045252, 2015R1D1A1A01058851, 2015R1D1A1A01060743, 2015R1A2A2A01004782, 2016R1A6A1A03012877]
- Dongguk University research fund
- National Research Foundation of Korea [2015M2A2A6A02045252, 2015R1D1A1A01060743, 2015R1D1A1A01058851, 2015R1A2A2A01004782] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A nanofoam nickel cobalt layered double hydroxide (NiCo(OH)(2)) electrode film is fabricated on a stainless-steel substrate with the use of a simple one-step solvothermal process. The nanofoam NiCo(OH)(2) electrode exhibits a high specific capacitance of 2710.2 Fig at a current density.of 9.1 A/g, and a good capacity retention of similar to 70% after 2000 charge-discharge cycles at a high current density of 31.8 A/g. An energy density of 60.23 Wh/kg is obtained at a power density of 1.8 kW/kg. The excellent electrochemical energy storage performance of the NiCo(OH)(2) electrode is due to the synergetic effect of a significantly improved ionic diffusion and an effective charge transfer, which is linked to a well-dispersed interconnected nanofoam morphology and binder-free direct contact with the current collector. (C) 2017 Elsevier B.V. All rights reserved.
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