Electrochemical insertion of Sr2+ ions onto nano delta-MnO2 particles


Autoria(s): Nayak, Prasant Kumar; Munichandraiah, N
Data(s)

15/06/2010

Resumo

Manganese dioxide is known to be an important electroactive material for supercapacitors. Generally, delta-MnO2 is subjected to electrochemical characterization studies in aqueous electrolytes of Na2SO4. It exhibits capacitance behaviour in the potential range between 0 and 1.0 V vs. SCE (saturated calomel electrode). In the present study, it is shown that delta-MnO2 exhibits capacitance behaviour in Sr(NO3)(2) electrolytes also. The suitable potential range in this electrolyte is also found to be 0-1.0 V. Specific capacitancemeasured in Sr(NO3)(2) electrolyte is 192 F g(-1). X-ray photoelectron spectroscopy data confirm that Sr2+ ions get inserted onto delta-MnO2 anoparticles. (C) 2010 Elsevier B.V. All rights reserved.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/28353/1/letters.pdf

Nayak, Prasant Kumar and Munichandraiah, N (2010) Electrochemical insertion of Sr2+ ions onto nano delta-MnO2 particles. In: Materials Letters, 64 (11). pp. 1319-1321.

Publicador

Elsevier Science

Relação

http://dx.doi.org/10.1016/j.matlet.2010.03.020

http://eprints.iisc.ernet.in/28353/

Palavras-Chave #Inorganic & Physical Chemistry
Tipo

Journal Article

PeerReviewed