Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 22, Pages 11062-11067Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm31526b
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A three-dimensional nanoporous NiO film was fabricated using a two-step process through an electrochemical route. The as-prepared NiO film exhibited a highly nanoporous structure and high surface area (264 m(2) g(-1)). The textural characterization of the film and its electrochemical performance as an electrochemical electrode were investigated. The electrode showed a high specific capacitance (1776 F g(-1)), power density (89 Wh kg(-1)), and energy density (16.5 kW kg(-1)). In addition, the electrode exhibited high and stable specific capacitance retention after a long cycle test in KOH solution. More importantly, the power density met the power requirements of the Partnership for a New Generation of Vehicles (PNGV).
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