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Carbon-air electrode with regenerative short time overload capacity: Part 1. Effect of manganese dioxide

Samo za registrovane korisnike
1973
Autori
Żółtowski, Piotr
Dražić, Dragutin M.
Vorkapić, L.Ž.
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentu
Apstrakt
To increase the overload capacity of the carbon-air electrode in alkaline electrolyte, without seriously changing the electrode potential during short-time overload periods, small amounts of MnO2 were added to carbon and the effects investigated. The potentiodynamic investigations revealed the existence of two reducible manganese species with reduction potentials of about −280 mV and −400 mV. The second potential corresponds to the known reduction process Mn(III) → Mn(II) whilst the first one corresponds to a reversible process (the product is easily reoxidized by air or anodically), not reported in literature as yet. It was explained in terms of a new redox potential for the system Mn(III)/Mn(II), both species being strongly and irreversibly adsorbed at the carbon surface. The galvanostatic discharge curves in the absence of air indicate that a sufficient overload capacity of about 40 C cm−2 is available if 22% (wt) MnO2 is added. Steady-state polarization curves in the presence of ai...r indicate the catalytic effect of small amounts of MnO2 for the oxygen reduction reaction.

Ključne reči:
carbon-air electrode / MnO2 / Steady-state polarization curves / catalytic effect
Izvor:
Journal of Applied Electrochemistry, 1973, 3, 4, 271-283
Izdavač:
  • Springer Nature

DOI: 10.1007/BF00613033

ISSN: 0021-891X; 1572-8838

Scopus: 2-s2.0-0015683034
[ Google Scholar ]
70
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/4133
Kolekcije
  • Radovi istraživača / Researchers' publications
Institucija
IHTM
TY  - JOUR
AU  - Żółtowski, Piotr
AU  - Dražić, Dragutin M.
AU  - Vorkapić, L.Ž.
PY  - 1973
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4133
AB  - To increase the overload capacity of the carbon-air electrode in alkaline electrolyte, without seriously changing the electrode potential during short-time overload periods, small amounts of MnO2 were added to carbon and the effects investigated. The potentiodynamic investigations revealed the existence of two reducible manganese species with reduction potentials of about −280 mV and −400 mV. The second potential corresponds to the known reduction process Mn(III) → Mn(II) whilst the first one corresponds to a reversible process (the product is easily reoxidized by air or anodically), not reported in literature as yet. It was explained in terms of a new redox potential for the system Mn(III)/Mn(II), both species being strongly and irreversibly adsorbed at the carbon surface. The galvanostatic discharge curves in the absence of air indicate that a sufficient overload capacity of about 40 C cm−2 is available if 22% (wt) MnO2 is added. Steady-state polarization curves in the presence of air indicate the catalytic effect of small amounts of MnO2 for the oxygen reduction reaction.
PB  - Springer Nature
T2  - Journal of Applied Electrochemistry
T1  - Carbon-air electrode with regenerative short time overload capacity: Part 1. Effect of manganese dioxide
VL  - 3
IS  - 4
SP  - 271
EP  - 283
DO  - 10.1007/BF00613033
ER  - 
@article{
author = "Żółtowski, Piotr and Dražić, Dragutin M. and Vorkapić, L.Ž.",
year = "1973",
url = "https://cer.ihtm.bg.ac.rs/handle/123456789/4133",
abstract = "To increase the overload capacity of the carbon-air electrode in alkaline electrolyte, without seriously changing the electrode potential during short-time overload periods, small amounts of MnO2 were added to carbon and the effects investigated. The potentiodynamic investigations revealed the existence of two reducible manganese species with reduction potentials of about −280 mV and −400 mV. The second potential corresponds to the known reduction process Mn(III) → Mn(II) whilst the first one corresponds to a reversible process (the product is easily reoxidized by air or anodically), not reported in literature as yet. It was explained in terms of a new redox potential for the system Mn(III)/Mn(II), both species being strongly and irreversibly adsorbed at the carbon surface. The galvanostatic discharge curves in the absence of air indicate that a sufficient overload capacity of about 40 C cm−2 is available if 22% (wt) MnO2 is added. Steady-state polarization curves in the presence of air indicate the catalytic effect of small amounts of MnO2 for the oxygen reduction reaction.",
publisher = "Springer Nature",
journal = "Journal of Applied Electrochemistry",
title = "Carbon-air electrode with regenerative short time overload capacity: Part 1. Effect of manganese dioxide",
volume = "3",
number = "4",
pages = "271-283",
doi = "10.1007/BF00613033"
}
Żółtowski P, Dražić DM, Vorkapić L. Carbon-air electrode with regenerative short time overload capacity: Part 1. Effect of manganese dioxide. Journal of Applied Electrochemistry. 1973;3(4):271-283
Żółtowski, P., Dražić, D. M.,& Vorkapić, L.Ž. (1973). Carbon-air electrode with regenerative short time overload capacity: Part 1. Effect of manganese dioxide.
Journal of Applied ElectrochemistrySpringer Nature., 3(4), 271-283.
https://doi.org/10.1007/BF00613033
Żółtowski Piotr, Dražić Dragutin M., Vorkapić L.Ž., "Carbon-air electrode with regenerative short time overload capacity: Part 1. Effect of manganese dioxide" 3, no. 4 (1973):271-283,
https://doi.org/10.1007/BF00613033 .

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