期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 483, 期 -, 页码 261-267出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2016.08.011
关键词
Chemical bath deposition; Redox additive aqueous electrolyte; Supercapacitor; Thin film; WO3
资金
- Human Resources Development program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) Grant - Korea government Ministry of Trade, Industry and Energy [20124010203180]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [NRF-2015R1A2A2A 01006856]
To achieve the highest electrochemical performance for supercapacitor, it is very essential to find out a suitable pair of an active electrode material and an electrolyte. In the present work, a simple approach is employed to enhance the supercapacitor performance of WO3 thin film. The WO3 thin film is prepared by a simple and cost effective chemical bath deposition method and its electrochemical performance is tested in conventional (H2SO4) and redox additive [H2SO4 + hydroquinone (HQ)] electrolytes. Two-fold increment in electrochemical performance for WO3 thin film is observed in redox additive aqueous electrolyte compared to conventional electrolyte. WO3 thin film showed maximum specific capacitance of 725 Fg(-1), energy density of 25.18 Wh kg(-1) at current density of 7 mA cm(-2) with better cycling stability in redox electrolyte. This strategy provides the versatile way for designing the high performance energy storage devices. (C) 2016 Elsevier Inc. All rights reserved.
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