title: Engineering the Membrane/Electrode Interface To Improve the Performance of Solid-State Supercapacitors.
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).
authors.affiliation: Department of Materials and ‡Clarendon Laboratory, University of Oxford , Oxford OX1 3PH, U.K.
authors.forename: Chun
authors.initials: C
authors.lastname: Huang
authors.affiliation: Department of Materials and ‡Clarendon Laboratory, University of Oxford , Oxford OX1 3PH, U.K.
authors.forename: Jin
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Department of Materials and ‡Clarendon Laboratory, University of Oxford , Oxford OX1 3PH, U.K.
authors.forename: Henry J
authors.initials: HJ
authors.lastname: Snaith
authors.affiliation: Department of Materials and ‡Clarendon Laboratory, University of Oxford , Oxford OX1 3PH, U.K.
authors.forename: Patrick S
authors.initials: PS
authors.lastname: Grant
keywords: interface engineering; porous TiO2 particles; solid-state supercapacitor; spray processing; wearable energy storage applications