Non-noble metal catalyst for glycerin oxidation assisted hydrogen production

Abstract

The invention discloses a non-noble metal catalyst for glycerin oxidation assisted hydrogen production. The preparation method comprises the following steps: calcining in a tubular furnace in an air atmosphere by adopting a hydrothermal method to obtain a Co3O4 material growing on foamed nickel; putting the prepared Co3O4-coated NF material into a three-electrode system to test the glycerol-assisted water decomposition hydrogen production and glycerol oxidation performance of the material, wherein the measured initial potential (10mA / cm < 2 >) is 1.22 V and is close to the theoretical potential 1.23 V of traditional electrolyzed water so that the energy consumption of hydrogen production is reduced, a nuclear magnetic hydrogen spectrum test is carried out on the product obtained after glycerol oxidation, the product is formic acid, and the Faraday efficiency reaches 97.4%. If the catalyst material can be applied to an acid-base asymmetric electrolytic tank by utilizing electrochemical neutralization, the measured initial potential (10mA / cm < 2 >) is 0.55 V, which exceeds the voltage required in the traditional electrolytic tank, and the energy consumption of the electro-catalytic reaction is greatly reduced.

Description

technical field [0001] The invention relates to the field of materials, in particular to the technical field of electrocatalysis, in particular to a non-precious metal catalyst used for glycerol oxidation-assisted hydrogen production. Background technique [0002] Fossil fuels are a limited resource, and generating electricity through fossil fuels has led to environmental problems such as pollution from carbon dioxide emissions and climate change. Therefore, the future renewable energy infrastructure requires clean and sustainable hydrogen production, for example, hydrogen production via electrocatalysis is a promising way. The traditional water electrolysis technology uses the hydrogen evolution reaction (HER) as the cathode reaction and the oxygen evolution reaction (OER) as the anode reaction. However, in conventional water electrolysis systems, the cathodic HER rate is often limited by the anodic OER reaction rate due to the slower kinetics of the latter. Building a hy...

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Problems solved by technology

So far, the most commonly used catalysts for the electrocatalytic oxidation of HER and glycerol in the reported literature are noble metal or noble metal and non-noble metal composite catalysts, but their high cost, scarcity and poor stability limit their large-scale production.

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