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Published on: November 11, 2013
Probing Structural Evolution and Charge Storage Mechanism of NiO2H Electrode Materials using In Operando Resonance
Dongchang Chen1, Xunhui Xiong2, Bote Zhao2
1School of Materials Science and Engineering Center for Innovative Fuel Cell and Battery Technologies Georgia Institute of Technology 771 Ferst Drive Atlanta GA 30332-0245 USA; Laser Dynamics Laboratory School of Chemistry and Biochemistry Georgia Institute of Technology 901 Atlantic Drive Atlanta GA 30332-0400 USA.
Abstract:
In operando resonance Raman spectroscopy suggests quantitative correlation between phonon band properties and the amount of charge storage of high-energy density NiO2H battery/pseudocapacitive material. Comparing the spectroscopic evolution using different electrolytes reveals the contributions of breaking/formation of O-H bonds and insertion/extraction of cations to electrochemical charge storage of NiO2H .
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