Design Insights for Tuning the Electrocatalytic Activity of Perovskite Oxides for the Oxygen Evolution Reaction
| Autor: | G. K. Surya Prakash, Aswin K. Manohar, Ayyakkannu Manivannan, Phong Trinh, Souradip Malkhandi, Mahalingam Balasubramanian, Sekharipuram R. Narayanan |
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| Rok vydání: | 2015 |
| Předmět: |
Aqueous solution
Materials science Inorganic chemistry Oxide Oxygen evolution chemistry.chemical_element Nanotechnology Electrolyte Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound General Energy chemistry Transition metal Lanthanum Physical and Theoretical Chemistry Cobalt Perovskite (structure) |
| Zdroj: | The Journal of Physical Chemistry C. 119:8004-8013 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | Rechargeable metal–air batteries and water electrolyzers based on aqueous alkaline electrolytes hold the potential to be sustainable solutions to address the challenge of storing large amounts of electrical energy generated from solar and wind resources. For these batteries and electrolyzers to be economically viable, it is essential to have efficient, durable, and inexpensive electrocatalysts for the oxygen evolution reaction. In this article, we describe new insights for predicting and tuning the activity of inexpensive transition metal oxides for designing efficient and inexpensive electrocatalysts. We have focused on understanding the factors determining the electrocatalytic activity for oxygen evolution in a strong alkaline medium. To this end, we have conducted a systematic investigation of nanophase calcium-doped lanthanum cobalt manganese oxide, an example of a mixed metal oxide that can be tuned for its electrocatalytic activity by varying the transition metal composition. Using X-ray absorption ... |
| Databáze: | OpenAIRE |
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