A Redox-Additive Electrolyte and Nanostructured Electrode for Enhanced Supercapacitor Energy Density

Van Thanh Nguyen; Jyh Ming Ting

doi:10.1021/acssuschemeng.0c05891

A Redox-Additive Electrolyte and Nanostructured Electrode for Enhanced Supercapacitor Energy Density

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate an ultrahigh energy density asymmetric supercapacitor (ASC) having a novel NiCo(CO3)(OH)2 nanoneedle positive electrode, Fe2O3/rGO nanocomposite negative electrode, and advanced potassium ferricyanide (K3[Fe(CN)6])/potassium hydroxide (KOH) electrolyte. The electrode materials were synthesized by a hydrothermal technique. The unique positive electrode was first shown to have a remarkable specific capacitance (Csp) of 3248.9 F g-1 at 1 A g-1 in an electrolyte containing 0.06 M K3[Fe(CN)6] and 3 M KOH. The ASC gives a superior energy density of 84.1 W h kg-1 at a power density of 825 W kg-1. The findings in this work provide a very promising approach toward the development of high-performance energy storage devices.

Original language	English
Journal	ACS Sustainable Chemistry and Engineering
DOIs	https://doi.org/10.1021/acssuschemeng.0c05891
Publication status	Accepted/In press - 2020

All Science Journal Classification (ASJC) codes

Chemistry(all)
Environmental Chemistry
Chemical Engineering(all)
Renewable Energy, Sustainability and the Environment

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@article{f3524ca505724f208a4e9f5a73860625,

title = "A Redox-Additive Electrolyte and Nanostructured Electrode for Enhanced Supercapacitor Energy Density",

abstract = "We demonstrate an ultrahigh energy density asymmetric supercapacitor (ASC) having a novel NiCo(CO3)(OH)2 nanoneedle positive electrode, Fe2O3/rGO nanocomposite negative electrode, and advanced potassium ferricyanide (K3[Fe(CN)6])/potassium hydroxide (KOH) electrolyte. The electrode materials were synthesized by a hydrothermal technique. The unique positive electrode was first shown to have a remarkable specific capacitance (Csp) of 3248.9 F g-1 at 1 A g-1 in an electrolyte containing 0.06 M K3[Fe(CN)6] and 3 M KOH. The ASC gives a superior energy density of 84.1 W h kg-1 at a power density of 825 W kg-1. The findings in this work provide a very promising approach toward the development of high-performance energy storage devices. ",

author = "Nguyen, {Van Thanh} and Ting, {Jyh Ming}",

note = "Funding Information: This work has been supported by the Hierarchical Green-Energy Materials (Hi-GEM) Research Center under grant no. MOST-109-2634-F-006-020 and the Ministry of Science and Technology in Taiwan under grant no. MOST 108-3017-F-006-003 in Taiwan.",

year = "2020",

doi = "10.1021/acssuschemeng.0c05891",

language = "English",

journal = "ACS Sustainable Chemistry and Engineering",

issn = "2168-0485",

publisher = "American Chemical Society",

}

TY - JOUR

T1 - A Redox-Additive Electrolyte and Nanostructured Electrode for Enhanced Supercapacitor Energy Density

AU - Nguyen, Van Thanh

AU - Ting, Jyh Ming

N1 - Funding Information: This work has been supported by the Hierarchical Green-Energy Materials (Hi-GEM) Research Center under grant no. MOST-109-2634-F-006-020 and the Ministry of Science and Technology in Taiwan under grant no. MOST 108-3017-F-006-003 in Taiwan.

PY - 2020

Y1 - 2020

N2 - We demonstrate an ultrahigh energy density asymmetric supercapacitor (ASC) having a novel NiCo(CO3)(OH)2 nanoneedle positive electrode, Fe2O3/rGO nanocomposite negative electrode, and advanced potassium ferricyanide (K3[Fe(CN)6])/potassium hydroxide (KOH) electrolyte. The electrode materials were synthesized by a hydrothermal technique. The unique positive electrode was first shown to have a remarkable specific capacitance (Csp) of 3248.9 F g-1 at 1 A g-1 in an electrolyte containing 0.06 M K3[Fe(CN)6] and 3 M KOH. The ASC gives a superior energy density of 84.1 W h kg-1 at a power density of 825 W kg-1. The findings in this work provide a very promising approach toward the development of high-performance energy storage devices.

AB - We demonstrate an ultrahigh energy density asymmetric supercapacitor (ASC) having a novel NiCo(CO3)(OH)2 nanoneedle positive electrode, Fe2O3/rGO nanocomposite negative electrode, and advanced potassium ferricyanide (K3[Fe(CN)6])/potassium hydroxide (KOH) electrolyte. The electrode materials were synthesized by a hydrothermal technique. The unique positive electrode was first shown to have a remarkable specific capacitance (Csp) of 3248.9 F g-1 at 1 A g-1 in an electrolyte containing 0.06 M K3[Fe(CN)6] and 3 M KOH. The ASC gives a superior energy density of 84.1 W h kg-1 at a power density of 825 W kg-1. The findings in this work provide a very promising approach toward the development of high-performance energy storage devices.

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JO - ACS Sustainable Chemistry and Engineering

JF - ACS Sustainable Chemistry and Engineering

SN - 2168-0485

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