title: Enhanced electrochemical performance of monoclinic WO3 thin film with redox additive aqueous electrolyte.
abstract: 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 725Fg(-1), energy density of 25.18Whkg(-1) at current density of 7mAcm(-2) with better cycling stability in redox electrolyte. This strategy provides the versatile way for designing the high performance energy storage devices.
authors: Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416 004, MS, India.
authors: Pragati A
authors: PA
authors: Shinde
authors: Department of Electronics and Computer Engineering, Chonnam National University, 300 Yongbong-Dong, Puk-Gu, Gwangju 500-757, South Korea.
authors: Vaibhav C
authors: VC
authors: Lokhande
authors: Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416 004, MS, India.
authors: Nilesh R
authors: NR
authors: Chodankar
authors: Department of Electronics and Computer Engineering, Chonnam National University, 300 Yongbong-Dong, Puk-Gu, Gwangju 500-757, South Korea.
authors: Taeksoo
authors: T
authors: Ji
authors: Department of Materials Science and Engineering, Chonnam National University, 300 Yongbong-Dong, Puk-Gu, Gwangju 500-757, South Korea. Electronic address: jinhyeok@chonnam.ac.kr.
authors: Jin Hyeok
authors: JH
authors: Kim
authors: Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416 004, MS, India. Electronic address: l_chandrakant@yahoo.com.
authors: Chandrakant D
authors: CD
authors: Lokhande
keywords: Chemical bath deposition; Redox additive aqueous electrolyte; Supercapacitor; Thin film; WO(3)