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Engineering the Membrane/Electrode Interface To Improve the Performance of Solid-State Supercapacitors

Author:
Huang, Chun, Zhang, Jin, Snaith, Henry J., Grant, Patrick S.
Source:
ACS Applied Materials & Interfaces 2016 v.8 no.32 pp. 20756-20765
ISSN:
1944-8252
Subject:
capacitance, electrochemistry, electrodes, electrolytes, energy, polymers, titanium dioxide
Abstract:
This paper investigates the effect of adding a 450 nm layer based on porous TiO₂ at the interface between a 4.5 μm carbon/TiO₂ nanoparticle-based electrode and a polymer electrolyte membrane as a route to improve energy storage performance in solid-state supercapacitors. Electrochemical characterization showed that adding the interface layer reduced charge transfer resistance, promoted more efficient ion transfer across the interface, and significantly improved charge/discharge dynamics in a solid-state supercapacitor, resulting in an increased areal capacitance from 45.3 to 111.1 mF cm–² per electrode at 0.4 mA cm–².
Agid:
5399176