Electrocatalyst for hydrogen evolution reaction
AssigneeQatar Foundation for Education, Science and Community Development
InventorsYUN-CHUK CHOI, MOHAMMED AL-HASHIMI, LEI FANG, SARBAJIT BANERJEE
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Abstract
The electrocatalyst for hydrogen evolution reaction includes nanosheets of molybdenum disulfide (MoS2) deposited on a carbon fiber substrate. The catalyst is formed in stepwise fashion by chemical vapor deposition of nanosheets of MoO3 onto the substrate, then reducing the MoO3 to nanosheets of MoO2 using sublimed sulfur, then by reaction of sulfur vapor with the MoO2 to form nanosheets of MoS2 on the carbon fiber substrate. The catalyst is multifaceted, having a large density of edges providing catalytically active sites for the hydrogen evolution reaction. The activity of the catalyst is enhanced by coating the catalyst with spherical fullerenes (nC60).
Claims20
An electrocatalyst for hydrogen evolution reaction, comprising:
- a carbon fiber paper substrate;
- and
- a plurality of nanosheets of MoS2 on the carbon fiber substrate, the nanosheets having a plurality of catalytically active edge sites along basal planes thereof.
A method of making an electrocatalyst for hydrogen evolution reaction, comprising the steps of:
- depositing nanosheets of MoO3 onto a carbon fiber paper by chemical vapor deposition;
- reducing the nanosheets of MoO3 to nanosheets of MoO2 by reaction with sublimed sulfur;
- and
- sulfiding the nanosheets of MoO2 to form nanosheets of MoS2 integrated with the carbon fiber paper substrate, the nanosheets of MoS2 integrated with the carbon fiber paper substrate providing the electrocatalyst for hydrogen evolution reaction.
A method of making an electrocatalyst for hydrogen evolution reaction, comprising the steps of:
- depositing nanosheets of MoO3 onto carbon fiber paper by chemical vapor deposition;
- reducing the nanosheets of MoO3 to nanosheets of MoO2 by reaction with sublimed sulfur;
- sulfiding the nanosheets of MoO2 to form nanosheets of MoS2 integrated with the carbon fiber paper substrate, the nanosheets of MoS2 integrated with the carbon fiber paper substrate providing the electrocatalyst for hydrogen evolution reaction;
- immersing the nanosheets of MoS2 integrated with the carbon fiber paper substrate in a solution of spherical fullerenes (nC60);
- and
- annealing the nanosheets of MoS2 integrated with the carbon fiber paper substrate after immersion in the fullerenes.
Dependencies are inferred from the claim text.