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

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 characteriza...

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Bibliographic Details
Published inACS applied materials & interfaces Vol. 8; no. 32; pp. 20756 - 20765
Main Authors Huang, Chun, Zhang, Jin, Snaith, Henry J, Grant, Patrick S
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 17.08.2016
Subjects
spray processing
solid-state supercapacitor
wearable energy storage applications
porous TiO2 particles
interface engineering
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Summary: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.
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ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.6b05789