A kind of ru-moo3-x/rgo composite material and its preparation method and application

Abstract

The invention discloses a Ru-MoO<3-x> / rGO composite material. The Ru-MoO<3-x> / rGO composite material comprises an rGO substrate, wherein the rGO substrate is provided with a Ru-MoO<3-x> nano-crystal;the Ru-MoO<3-x> nano-crystal comprises Ru and MoO<3-x> which are uniformly compounded; the Ru is uniformly modified on the surface of the MoO<3-x>, wherein the value of x ranges from 0 to 3. The Ru-MoO<3-x> / rGO composite material disclosed by the invention has excellent HER (Hydrogen Evolution Reaction) performance; HER in fuel cells can be efficiently catalyzed and the Ru-MoO<3-x> / rGO composite material is prepared through an in-situ growth self-assembling method; the Ru-MoO<3-x> / rGO composite material is controllably synthesized under normal pressure; meanwhile, a self-assembling manner is adopted so that the a technology is simple and is suitable for batch production.

Description

technical field [0001] The invention relates to a Ru-containing composite material, more specifically to a Ru-MoO 3-x The / rGO composite material and its preparation method and application belong to the technical field of nanometer materials. Background technique [0002] With the development of society, people's demand for energy is increasing, and the search and development of sustainable and efficient clean energy to replace limited fossil fuels has attracted global attention. In recent years, the development and utilization of fuel cells has further broadened the scope of research in the field of energy. However, in the process of designing fuel cells, there are still some problems that need to be solved urgently: first, in the process of electrolysis of water, the overpotential of the hydrogen evolution reaction (HER) in the cathode of the fuel cell is relatively high; , the active components are easy to agglomerate, resulting in a decrease in activity. Studies have ...

AI Technical Summary

Problems solved by technology

However, in the process of designing fuel cells, there are still some problems that need to be solved urgently: first, in the process of electrolysis of water, the overpotential of the hydrogen evolution reaction (HER) that occurs at the cathode of the fuel cell is relatively high; , the active components are easy to agglomerate, resulting in a decrease in activity

At the same time, there are few reports on optimizing the hydrogen evolution reaction (HER) by adjusting the content of surface O vacancies in metal oxides.

In particular, the introduction of active metal Ru to adjust the content of O vacancies to optimize the catalytic performance has not been reported yet.

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