Biomass-derived electrocatalytic composites for hydrogen evolution
| Autor: | James T. Muckerman, Wei-Fu Chen, Shilpa Iyer, Kotaro Sasaki, Yimei Zhu, Chiu Hui Wang, Etsuko Fujita, Shweta Iyer |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Hydrogen Electrolysis of water Renewable Energy Sustainability and the Environment business.industry Catalyst support Inorganic chemistry Industrial catalysts chemistry.chemical_element Pollution Catalysis Nuclear Energy and Engineering chemistry Hydrogen economy Environmental Chemistry Platinum business Hydrogen production |
| Zdroj: | Energy & Environmental Science. 6:1818 |
| ISSN: | 1754-5706 1754-5692 |
| DOI: | 10.1039/c3ee40596f |
| Popis: | The production of hydrogen from water electrolysis calls for an efficient non-precious-metal catalyst to make the process economically viable because of the high cost and the limited supply of the currently used platinum catalysts. Here we present such a catalyst made from earth-abundant molybdenum and common, humble soybeans (MoSoy). This catalyst, composed of a catalytic β-Mo2C phase and an acid-proof γ-Mo2N phase, drives the hydrogen evolution reaction (HER) with low overpotentials, and is highly durable in a corrosive acidic solution over a period exceeding 500 hours. When supported on graphene sheets, the MoSoy catalyst exhibits very fast charge transfer kinetics, and its performance rivals that of noble-metal catalysts such as Pt for hydrogen production. These findings prove that the soybean (as well as other high-protein biomass) is a useful material for the generation of catalysts incorporating an abundant transition metal, thereby challenging the exclusivity of platinum catalysts in the hydrogen economy. |
| Databáze: | OpenAIRE |
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