The DOI matches its Crossref record; 49 of the 49 references it cites were found in a registry or an index.
Probing the Charge Storage Mechanism of a Pseudocapacitive MnO2 Electrode Using in Operando Raman Spectroscopy
Open accessAbstract
While manganese oxide (MnO 2 ) has been extensively studied as an electrode material for pseudocapacitors, a clear understanding of its charge storage mechanism is still lacking. Here we report our findings in probing the structural changes of a thin-film model MnO 2 electrode during cycling using in operando Raman spectroscopy. The spectral features (e.g., band position, intensity, and width) are correlated quantitatively with the size (Li +, Na +, and K + ) of cations in different electrolytes and with the degree of discharge to gain better understanding of the cation-incorporation mechanism into the interlayers of pseudocapacitive MnO 2 . Also, theoretical calculations of phonon energy associated with the models of interlayer cation-incorporated MnO 2 agree with the experimental observations of cation-size effect on the positions of Raman bands. Furthermore, the cation-size effects on spectral features at different potentials of MnO 2 electrode are correlated quantitatively with the amount of charge stored in the MnO 2 electrode. The understanding of the structural changes associated with charge storage gained from Raman spectroscopy provides valuable insights into the cation-size effects on the electrochemical performances of the MnO 2 electrode.
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Cited by
Achieving high energy density and high power density with pseudocapacitive materials
Choi, C., Ashby, D. S., Butts, D. M., DeBlock, R. H., Wei, Q., Lau, J., & Dunn, B. (2019) · Nature Reviews Materials · doi:10.1038/s41578-019-0142-z · Cited by 1,964
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Da Silva, L. M., Cesar, R., Moreira, C. M. R., Santos, J. H. M., De Souza, L. G., Pires, B. M., Vicentini, R., Nunes, W., & Zanin, H. (2020) · Energy Storage Materials · doi:10.1016/j.ensm.2019.12.015 · Cited by 357
The critical role of point defects in improving the specific capacitance of δ-MnO2 nanosheets
Gao, P., Metz, P., Hey, T., Gong, Y., Liu, D., Edwards, D. D., Howe, J. Y., Huang, R., & Misture, S. T. (2017) · Nature Communications · doi:10.1038/ncomms14559 · Cited by 294
Metadata
- Authors
- Chen, D., Ding, D., Li, X., Waller, G. H., Xiong, X., El-Sayed, M. A., & Liu, M.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-10-02
- Volume
- 27
- Issue
- 19
- Pages
- 6608-6619
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W2499037896
- Cited by
- 300
- References
- 49
- FWCI
- 4.88
- Type
- journal article
- Language
- en
- Open access
- green
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- Chen, D., Ding, D., Li, X., Waller, G. H., Xiong, X., El-Sayed, M. A., & Liu, M. (2015). Probing the Charge Storage Mechanism of a Pseudocapacitive MnO2 Electrode Using in Operando Raman Spectroscopy. Chemistry of Materials. https://doi.org/10.1021/acs.chemmater.5b03118
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