Microplasma-assisted bottom-up synthesis of graphene nanosheets with superior sodium-ion storage performance

Xu Feng Luo, Shan Yu Wang, Chuan Ming Tseng, Sheng Wei Lee, Wei Hung Chiang*, Jeng-Kuei Chang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

A microplasma-assisted chemical vapor deposition technique is used to produce graphene nanosheets (denoted as MPGNSs). This bottom-up synthesis is a one-step, facile, green, and continuous process. The obtained MPGNSs have higher crystallinity, less defects, and higher tap density compared to those of conventional reduced graphene oxides (RGOs). Galvanostatic intermittent titration and cyclic voltammetry techniques are used to explore the effects of the aforementioned material properties on the electrochemical Na + storage behavior. MPGNSs are able to deliver a high capacity of 250 mA h g -1 (@0.03 A g -1 ) and show excellent rate capability (110 mA h g -1 @5 A g -1 ), with both values being clearly superior to those of the RGOs synthesized via a top-down graphite exfoliation method. A highly promising anode material for sodium-ion batteries is thus proposed in this work.

Original languageEnglish
Pages (from-to)7624-7631
Number of pages8
JournalJournal of Materials Chemistry A
Volume4
Issue number20
DOIs
StatePublished - 1 Jan 2016

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