Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 38, Issue 25, Pages 10191-10195Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2013.06.038
Keywords
Electrodeposition; Oxygen-evolving catalyst; Electrolyte; Water splitting
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Funding
- National Natural Science Foundation of China [51002103, 21136007]
- Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi
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A weakly acidic H3BO3 solution (pH = 5.1) was used to synthesize new oxygen-evolution catalysts for water splitting under mild conditions. Two novel oxygen-evolution catalysts, Co-BA(i) and Mn-BA(i) (BA(i) = inorganic boric acid), were obtained in the H3BO3 solution with added Co2+ and Mn2+, respectively. The average oxygen evolution rate in the H3BO3 solution with Co2+ was 0.3133 mu mol/h, about 70 times greater than the rate without a metal ion; the rate with Mn2+ was 1.13 mu mol/h, about 250 times greater. The phases, morphologies, and compositions of the Co-BA(i) and Mn-BA(i) catalysts were analysed by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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