Issue 4, 2011
From the journal:

Chemical Communications

Reversible phase transformation of MnO2nanosheets in an electrochemical capacitor investigated by in situRaman spectroscopy†

Yu-Kuei Hsu,ab   Ying-Chu Chen,c   Yan-Gu Lin,d   Li-Chyong Chen*c  and  Kuei-Hsien Chen*ac  

* Corresponding authors

a Institute of Atomic and Molecular Science, Academia Sinica, Taipei 106, Taiwan

b Department of Opto-Electronic Engineering, National Dong Hwa University, Hualien, Taiwan

c Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan
E-mail: chenlc@ntu.edu.tw
Fax: +886-2-2365-5404
Tel: +886-2-3366-5249

d Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan

Abstract

The reversible phase transformation is reported from hexagonal to monoclinic structure responding to the intercalation/deintercalation of Na+ between MnO2 nanosheets upon potential cycling in aqueous electrolyte via an in situ Raman technique. This structural evolution will influence the Na+ diffusion process in MnO2 nanosheets and cause phase retention during the self-discharge process.

Graphical abstract: Reversible phase transformation of MnO2 nanosheets in an electrochemical capacitor investigated by in situRaman spectroscopy

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Article information

DOI
https://doi.org/10.1039/C0CC03902K
Article type
Communication
Submitted
16 Sep 2010
Accepted
22 Oct 2010
First published
22 Nov 2010

Chem. Commun., 2011,47, 1252-1254

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Reversible phase transformation of MnO2 nanosheets in an electrochemical capacitor investigated by in situRaman spectroscopy

Y. Hsu, Y. Chen, Y. Lin, L. Chen and K. Chen, Chem. Commun., 2011, 47, 1252 DOI: 10.1039/C0CC03902K

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