Ionically conducting PVA-LiClO4 gel electrolyte for high performance flexible solid state supercapacitors

Nilesh R Chodankar; Deepak P Dubal; Abhishek C Lokhande; Chandrakant D Lokhande

doi:10.1016/j.jcis.2015.08.046

Ionically conducting PVA-LiClO4 gel electrolyte for high performance flexible solid state supercapacitors

J Colloid Interface Sci. 2015 Dec 15:460:370-6. doi: 10.1016/j.jcis.2015.08.046. Epub 2015 Aug 24.

Authors

Nilesh R Chodankar¹, Deepak P Dubal², Abhishek C Lokhande³, Chandrakant D Lokhande⁴

Affiliations

¹ Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416004, MS, India.
² Catalan Institute of Nanoscience and Nanotechnology, CIN2, ICN2 (CSIC-ICN), Campus UAB, E-08193 Bellaterra, Barcelona, Spain.
³ Department of Materials Science and Engineering, Chonnam National University, 300 Yongbong-Dong, Puk-Gu, Gwangju 500-757, South Korea.
⁴ Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416004, MS, India. Electronic address: l_chandrakant@yahoo.com.

PMID: 26397234
DOI: 10.1016/j.jcis.2015.08.046

Abstract

The synthesis of polymer gel electrolyte having high ionic conductivity, excellent compatibility with active electrode material, mechanical tractability and long life is crucial to obtain majestic electrochemical performance for flexible solid state supercapacitors (FSS-SCs). Our present work describes effect of different polymers gel electrolytes on electrochemical properties of MnO2 based FSS-SCs device. It is revealed that, MnO2-FSS-SCs with polyvinyl alcohol (PVA)-Lithium perchlorate (LiClO4) gel electrolyte demonstrate excellent electrochemical features such as maximum operating potential window (1.2V), specific capacitance of 112Fg(-1) and energy density of 15Whkg(-1) with extended cycling stability up to 2500CV cycles. Moreover, the calendar life suggests negligible decrease in the electrochemical performance of MnO2-FSS-SCs after 20days.

Keywords: MnO(2) thin films; Polymer gel electrolytes; Solid state supercapacitor.