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).

Coral-like directional porosity lithium ion battery cathodes by ice templating

“…stainless steel current collectors have also been reported previously for similar testing [67]. Although Al has a higher electrical conductivity than stainless steel, the electrical conductivity of both Al and stainless steel is orders of magnitude higher than that of the electrodes, and switching the current collector from Al to stainless steel did not influence the electrochemical characterization of the electrodes [63].…”

Low-tortuosity and graded lithium ion battery cathodes by ice templating

“…[10][11][12][13] Most current research studies focus on investigating new electrode materials and have made signicant performance improvements. 7,[14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] However, most of them use the ubiquitous SC route resulting in 40-60 mm thick electrodes.…”

Spray printing and optimization of anodes and cathodes for high performance Li-Ion batteries

“…[21] In particular, our group has demonstrated and reported diverse, scalable electrode structures for supercapacitors as well as Li-ion batteries based on a spray printing route using various types of electrode materials including carbon nanotubes, carbon nanofibers, graphene, TiO2, Fe2O3, Fe3O4, etc. [22][23][24][25][26][27][28][29][30] Recently, multilayered electrode structures were shown to improve Li-ion diffusion and the volumetric capacity of Li-ion battery configurations based on the layer-by-layer spray deposition of two types of TiO2 with porous and non-porous morphologies, [31] forming electrodes that are difficult to achieve using conventional battery electrode manufacturing technologies.…”