Nickel-doped MnO2 nanowires anchored onto reduced graphene oxide for rapid cycling cathode in lithium ion batteries

James G. Radich, Yong Siou Chen, Prashant V. Kamat

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Nickel-doped MnO2 nanowires were synthesized directly onto reduced graphene oxide (RGO) to generate a composite cathode material with improved high-rate cycling characteristics. The presence of RGO improves the electrochemical characteristics of the cathode in Li-ion half-cell architecture. Cyclic voltammetry, electrochemical impedance spectroscopy, and electrode cycling are confirm that RGO plays a major role in enhancing the ability of the NixMn(1-x)O2 to reversibly intercalate lithium ions at 1C rate. The chronocoulometric response of the RGO-based electrode shows the improvements originate from faster reaction kinetics and transport of Li+ coupled with increased specific capacitance and Li+ adsorption.

Original languageEnglish (US)
Pages (from-to)M3178-M3181
JournalECS Journal of Solid State Science and Technology
Volume2
Issue number10
DOIs
StatePublished - Nov 15 2013

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

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