Biomass carbon oxygen evolution electrocatalyst and preparation method thereof
A biomass carbon, electrocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, electrodes, etc., to achieve the effects of low price, low preparation cost, and easy large-scale production
Active Publication Date: 2020-07-24
SUZHOU UNIV
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Problems solved by technology
Therefore, it is still extremely challenging to prepare high-performance, well-stabilized alternative oxygen evolution catalysts using cheap raw materials.
Method used
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Embodiment 1
[0071] 1. Catalyst Fe 3 o 4 Preparation of / NiS@CC
[0072] Weigh ferric nitrate, nickel nitrate and thiourea in a glass bottle, add deionized water so that the concentration of ferric nitrate and nickel nitrate is 1000ppm, and the concentration of thiourea is 30g / L, and stir to obtain a mixed solution.
[0073] Soak the porous biomass carbon cloth in a mixed solution of ferric nitrate, nickel nitrate and thiourea, wherein the ratio of the weight of the porous biomass carbon cloth to the volume of the mixed solution is 20mg:20mL, and shake for 5h until the ferric nitrate, nickel nitrate and thiourea are mixed. The sulfur-containing ligands are evenly and fully adsorbed on the carbon cloth. The carbon adsorbed with ferric nitrate, nickel nitrate and sulfur-containing ligands was arranged in a tube furnace, under the inert gas N 2 Under the protection of , the temperature was raised to 900 °C at 5 °C / min and kept for 1 h, and after cooling to room temperature, the iron-nickel...
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Abstract
The invention discloses a biomass carbon oxygen evolution electrocatalyst and a preparation method thereof. The biomass carbon oxygen evolution electrocatalyst comprises a carbon-based material and active substances Fe3O4 and NiS doped in the carbon-based material, wherein the content of Fe element in the biomass carbon oxygen evolution electrocatalyst is 1.2+ / -0.02%, the content of Ni element is1.4+ / -0.03%, the content of S element is 2.1+ / -0.02%, and the content of O element is 7.3+ / -0.02%. The preparation method of the biomass carbon oxygen evolution electrocatalyst comprises the followingsteps: roasting a pure cotton substance in a carbon dioxide atmosphere to obtain a porous biomass carbon-based material; preparing a mixed solution containing metal ions and a sulfur-containing ligand; enabling the porous biomass carbon-based material to be in full contact with the mixed solution; and roasting the porous biomass carbon-based material adsorbed with the metal ions and the sulfur-containing ligand in a nitrogen atmosphere to obtain the biomass carbon oxygen evolution electrocatalyst. The biomass carbon oxygen evolution electrocatalyst is simple in synthetic route and low in preparation cost, the catalytic activity is superior to that of a precious metal RuO2 catalyst, and the stability is excellent.
Description
technical field [0001] The invention relates to the technical field of non-precious metal catalysts in electrocatalysis, in particular to a biomass carbon oxygen evolution electrocatalyst and a preparation method thereof. Background technique [0002] With the rapid economic development today, the global energy crisis and environmental pollution have attracted more and more attention. In order to maintain the sustainability of future development, it is crucial to develop green and environmentally friendly forms of energy and energy conversion. Among them, hydrogen energy, as a clean, efficient, and renewable energy carrier, is widely used in many fields such as fuel cells, power station systems, and aerospace. In order to realize the large-scale production of hydrogen energy, the water electrolysis system is recognized as the most promising technology, and its raw materials are simple and easy to obtain. However, the high overpotential due to the slow rate of the oxygen ev...
Claims
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IPC IPC(8): B01J27/043B01J35/10C25B1/04C25B11/06
CPCB01J27/043C25B1/04C25B11/091B01J35/33B01J35/618Y02E60/36
Inventor 方剑江珊
Owner SUZHOU UNIV