Nanoporous graphene obtained by hydrothermal process in H2O2 and its application for supercapacitors

Jinlong Lv; Tongxiang Liang

doi:10.1016/j.cplett.2016.07.015

Nanoporous graphene obtained by hydrothermal process in H₂O₂ and its application for supercapacitors

Jinlong Lv, Tongxiang Liang

ENG - Fracture and Reliability Research Institute

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

9 Citations (Scopus)

Abstract

Nanohole graphene oxide (NHGO) was obtained in a homogeneous aqueous mixture of graphene oxide (GO) and H₂O₂ at 120 °C. Supercapacitors were fabricated as the electrode material by using NHGO. A specific capacitance of 240.1 F g⁻¹ was obtained at a current density of 1 A g⁻¹ in 6 m KOH electrolyte and specific capacitance remained 193.6 F g⁻¹ at the current density of 20 A g⁻¹. This was attributed to reducing the inner space between the double-layers, enhanced ion diffusion and large specific surface area. Supercapacitor prepared with NHGO electrodes also exhibited an excellent cycle stability.

Original language	English
Pages (from-to)	61-65
Number of pages	5
Journal	Chemical Physics Letters
Volume	659
DOIs	https://doi.org/10.1016/j.cplett.2016.07.015
Publication status	Published - 2016 Aug 16

Keywords

Graphene oxide
Holey
Hydrothermal process
Microstructure
Supercapacitors

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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title = "Nanoporous graphene obtained by hydrothermal process in H2O2 and its application for supercapacitors",

abstract = "Nanohole graphene oxide (NHGO) was obtained in a homogeneous aqueous mixture of graphene oxide (GO) and H2O2 at 120 °C. Supercapacitors were fabricated as the electrode material by using NHGO. A specific capacitance of 240.1 F g−1 was obtained at a current density of 1 A g−1 in 6 m KOH electrolyte and specific capacitance remained 193.6 F g−1 at the current density of 20 A g−1. This was attributed to reducing the inner space between the double-layers, enhanced ion diffusion and large specific surface area. Supercapacitor prepared with NHGO electrodes also exhibited an excellent cycle stability.",

keywords = "Graphene oxide, Holey, Hydrothermal process, Microstructure, Supercapacitors",

author = "Jinlong Lv and Tongxiang Liang",

year = "2016",

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doi = "10.1016/j.cplett.2016.07.015",

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journal = "Chemical Physics Letters",

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T1 - Nanoporous graphene obtained by hydrothermal process in H2O2 and its application for supercapacitors

AU - Lv, Jinlong

AU - Liang, Tongxiang

PY - 2016/8/16

Y1 - 2016/8/16

N2 - Nanohole graphene oxide (NHGO) was obtained in a homogeneous aqueous mixture of graphene oxide (GO) and H2O2 at 120 °C. Supercapacitors were fabricated as the electrode material by using NHGO. A specific capacitance of 240.1 F g−1 was obtained at a current density of 1 A g−1 in 6 m KOH electrolyte and specific capacitance remained 193.6 F g−1 at the current density of 20 A g−1. This was attributed to reducing the inner space between the double-layers, enhanced ion diffusion and large specific surface area. Supercapacitor prepared with NHGO electrodes also exhibited an excellent cycle stability.

AB - Nanohole graphene oxide (NHGO) was obtained in a homogeneous aqueous mixture of graphene oxide (GO) and H2O2 at 120 °C. Supercapacitors were fabricated as the electrode material by using NHGO. A specific capacitance of 240.1 F g−1 was obtained at a current density of 1 A g−1 in 6 m KOH electrolyte and specific capacitance remained 193.6 F g−1 at the current density of 20 A g−1. This was attributed to reducing the inner space between the double-layers, enhanced ion diffusion and large specific surface area. Supercapacitor prepared with NHGO electrodes also exhibited an excellent cycle stability.

KW - Graphene oxide

KW - Holey

KW - Hydrothermal process

KW - Microstructure

KW - Supercapacitors

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