Effects of size and phase of TiO2 in poly (vinyl alcohol)-based gel electrolyte on energy storage ability of flexible capacitive supercapacitors

Tsung Rong Kuo, Lu Yin Lin, Kuan Yu Lin, Sibidou Yougbaré

研究成果: 雜誌貢獻文章同行評審

14 引文 斯高帕斯(Scopus)

摘要

Flexible supercapacitor (FSC) with high power density and cycle life has been considered as efficient energy storage device for soft electronics. Gel electrolyte is used in FSC to avoid electrolyte leakage. Titanium dioxide (TiO2) with high dielectric constant and abundant surface vacant sites is regarded as efficient inorganic filler in gel electrolyte. In this work, TiO2 nanoparticles are incorporated in polyvinyl alcohol/H3PO4 gel electrolyte for FSC. Different particle sizes and phases of TiO2 are firstly used as inorganic filler in gel electrolyte to enhance ionic conductivity via reducing crystallinity of polymer. The FSC with P25 TiO2 in gel electrolyte presents the best energy storage ability due to the smallest particle size and preferable phases. The highest specific capacitance (CF) of 69.2 F/g at 20 mV/s is obtained for FSC with optimized P25 TiO2 amount in gel-electrolyte. This FSC also shows the maximum energy density of 5.9 Wh/kg at 300 W/kg, and CF retention of 94% after 3500 charging/discharging cycles. This work demonstrates feasibility of TiO2 as efficient filler in gel electrolyte. It is worthy to study the relation between intrinsic property of TiO2 and energy storage ability of FSC in other gel-electrolyte systems.
原文英語
文章編號104773
期刊Journal of Energy Storage
52
DOIs
出版狀態已發佈 - 8月 2022

ASJC Scopus subject areas

  • 可再生能源、永續發展與環境
  • 能源工程與電力技術
  • 電氣與電子工程

指紋

深入研究「Effects of size and phase of TiO2 in poly (vinyl alcohol)-based gel electrolyte on energy storage ability of flexible capacitive supercapacitors」主題。共同形成了獨特的指紋。

引用此