Surfactant-mediated electrodeposition of a water-oxidizing manganese oxide

Wojciech T. Osowiecki, Stafford W. Sheehan, Karin J. Young, Alec C. Durrell, Brandon Q. Mercado, Gary W Brudvig

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Splitting water into hydrogen and oxygen is one of the most promising ways of storing energy from intermittent, renewable sources in the future. Toward this goal, development of inexpensive, stable, and non-toxic catalysts for water oxidation is crucial. We report that the electrodeposition of manganese oxide in the presence of sodium dodecyl sulfate (SDS) produces a material that is highly active for electrocatalytic water oxidation at pH near 7 and remains stable for over 24 hours of sustained electrolysis. Clark electrode measurements demonstrate more than 95% Faradaic efficiency for oxygen evolution after an initial charging period. We found that catalytic performance was optimized in films prepared by electrodeposition using a precursor solution containing moderate concentration of substrates, namely 25 mM Mn2+ and 25 mM SDS. Microstructure and elemental analyses revealed that the deposited material, a mixed-phase manganese oxide, is structurally similar to materials used for electrochemical capacitors and batteries, drawing a parallel between highly studied cathode materials for rechargeable batteries and heterogeneous catalysts for water oxidation.

Original languageEnglish
Pages (from-to)16873-16881
Number of pages9
JournalDalton Transactions
Volume44
Issue number38
DOIs
Publication statusPublished - Sep 2 2015

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Electrodeposition
Surface-Active Agents
Water
Sodium Dodecyl Sulfate
Oxidation
Oxygen
Catalysts
Secondary batteries
Electrolysis
Hydrogen
Cathodes
Capacitors
Microstructure
Electrodes
manganese oxide
Substrates

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Osowiecki, W. T., Sheehan, S. W., Young, K. J., Durrell, A. C., Mercado, B. Q., & Brudvig, G. W. (2015). Surfactant-mediated electrodeposition of a water-oxidizing manganese oxide. Dalton Transactions, 44(38), 16873-16881. https://doi.org/10.1039/c5dt02390d

Surfactant-mediated electrodeposition of a water-oxidizing manganese oxide. / Osowiecki, Wojciech T.; Sheehan, Stafford W.; Young, Karin J.; Durrell, Alec C.; Mercado, Brandon Q.; Brudvig, Gary W.

In: Dalton Transactions, Vol. 44, No. 38, 02.09.2015, p. 16873-16881.

Research output: Contribution to journalArticle

Osowiecki, WT, Sheehan, SW, Young, KJ, Durrell, AC, Mercado, BQ & Brudvig, GW 2015, 'Surfactant-mediated electrodeposition of a water-oxidizing manganese oxide', Dalton Transactions, vol. 44, no. 38, pp. 16873-16881. https://doi.org/10.1039/c5dt02390d
Osowiecki WT, Sheehan SW, Young KJ, Durrell AC, Mercado BQ, Brudvig GW. Surfactant-mediated electrodeposition of a water-oxidizing manganese oxide. Dalton Transactions. 2015 Sep 2;44(38):16873-16881. https://doi.org/10.1039/c5dt02390d
Osowiecki, Wojciech T. ; Sheehan, Stafford W. ; Young, Karin J. ; Durrell, Alec C. ; Mercado, Brandon Q. ; Brudvig, Gary W. / Surfactant-mediated electrodeposition of a water-oxidizing manganese oxide. In: Dalton Transactions. 2015 ; Vol. 44, No. 38. pp. 16873-16881.
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