Catalyst for electrolysis
AssigneeRoyal Melbourne Institute of Technology
InventorsNasir Mahmood, Suraj Loomba
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Abstract
The invention provides a heteroatom doped mixed metal molybdenum electrocatalyst for water electrolysis, as well as methods of make same and use of same in electrolytic cells. The electrocatalyst comprises at least one ultra-thin 2D defect rich porous sheet of crystalline inorganic material which is a heteroatom doped-transition metal molybdenum phosphide, wherein the transition metal is other than molybdenum, and wherein a plurality of pores and a plurality of other defects form active sites which are distributed laterally across the ultra-thin 2D porous sheet, that is, distributed between edges of the sheet.
Claims26
An electrocatalyst comprising at least one ultra-thin 2D defect rich porous sheet of a crystalline inorganic material which is a heteroatom doped-transition metal molybdenum phosphide, wherein
- the transition metal is other than molybdenum, and
- a plurality of pores and a plurality of other defects form active sites which are distributed laterally across the ultra-thin 2D porous sheet, that is, distributed between edges of the sheet.
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A method of synthesizing ultra-thin 2D defect rich porous sheets of a heteroatom doped-transition metal molybdenum phosphide, comprising the steps of:
- combining a peroxomolybdic solution, a non-molybdenum transition metal foam, and with an organic source of heteroatoms to form a first reactant solution;
- hydrothermally reacting the first reactant solution and recovering a dry solid powder product on completion of the hydrothermal reaction;
- annealing the dry solid powder under an inert atmosphere to form an annealed powder material;
- and
- phosphorizing the annealed powder material with a source of phosphorus under an inert atmosphere to from the ultra-thin 2D defect rich porous sheets of a heteroatom doped-transition metal molybdenum phosphide.
Dependencies are inferred from the claim text.