Glucose-derived porous carbon-coated silicon nanowires as efficient electrodes for aqueous micro-supercapacitors

TitleGlucose-derived porous carbon-coated silicon nanowires as efficient electrodes for aqueous micro-supercapacitors
Publication TypeJournal Article
Year of Publication2016
AuthorsDevarapalli, RReddy, Szunerits, S, Coffinier, Y, Shelke, MV, Boukherroub, R
JournalACS Applied Materials & Interfaces
Volume8
Issue7
Pagination4298-4302
Date PublishedFEB
ISSN1944-8244
Keywordscarbon coating, glucose precursor, hydrothermal, microsupercapacitors, silicon nanowires
Abstract

In this study, we report on carbon coating of vertically aligned silicon nanowire (SiNWs) arrays via a simple hydrothermal process using glucose as carbon precursor. Using this process, a thin carbon layer is uniformly deposited on the SiNWs. Under optimized conditions, the coated SiNWs electrode showed better electrochemical energy storage capacity as well as exceptional stability in aqueous system as compared to uncoated SiNWs. The as-measured capacitance reached 25.64 mF/cm(2) with a good stability up to 25000 charging/discharging cycles in 1 M Na2SO4 aqueous solution.

DOI10.1021/acsami.5b11240
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

7.145

Divison category: 
Physical and Materials Chemistry