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

被引：213

作者：

Hsu, Yu-Kuei ^{[2
,3
]}

Chen, Ying-Chu ^{[1
]}

Lin, Yan-Gu ^{[4
]}

Chen, Li-Chyong ^{[1
]}

Chen, Kuei-Hsien ^{[1
,2
]}

机构：

[1] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 106, Taiwan

[2] Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan

[3] Natl Dong Hwa Univ, Dept Optoelect Engn, Hualien 97401, Taiwan

[4] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan

来源：

CHEMICAL COMMUNICATIONS | 2011年 / 47卷 / 04期

关键词：

MANGANESE OXIDE; ELECTRODE; MECHANISM;

D O I：

10.1039/c0cc03902k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：1252 / 1254

页数：3

共 18 条

[11]

Miller JR, 2008, ELECTROCHEM SOC INTE, V17, P53

[12] Materials science - Electrochemical capacitors for energy management [J].