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Non-Noble Metal Water Electrolysis Catalysts

Brookhaven National Laboratory

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a) TEM image of the stacked MoN nanosheets on carbon supports. The read and white arrows mark the nanosheets that lay flat and stand vertically, respectively. b) A HRTEM image with the crystal structure overlaid looking down along the <002> zone axis, and c) a HRTEM image showing the standing {002} lattice planes (cyan balls:Mo and small blue balls:N).
a) TEM image of the stacked MoN nanosheets on carbon supports. The read and white arrows mark the nanosheets that lay flat and stand vertically, respectively. b) A HRTEM image with the crystal structure overlaid looking down along the <002> zone axis, and c) a HRTEM image showing the standing {002} lattice planes (cyan balls:Mo and small blue balls:N).

Technology Marketing Summary

This invention comprises an inexpensive catalyst system for water electrolyzers by replacing the noble-metal catalysts that are typically used in electrolyzer systems. A molybdenum-nickel nitride nanosheet catalyst has been found to be very stable.

Description

A novel form of nickel-molybdenum nitride - nanosheets - has been found to be a highly effective catalyst for splitting water to form hydrogen gas. The combination of reactive Ni with electron-dense Mo and its conversion to the nanosheet nitride form has produced a durable and highly active hydrogen evolution catalyst. Nitrides of other metals in combination with molybdenum are expected to have comparable activity.

Benefits

The majority of the cost of current electrolyzers is a result of the requirement for use of noble-metal catalysts, particularly platinum. Replacement with considerably less expensive catalysts that are highly active and stable can result in new electrolyzers at a lower cost.

Applications and Industries

Companies in the renewable energy business, manufacturers of electrolyzers, and catalyst providers may be interested in this new hydrogen evolution reaction catalyst.

 
Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Patent 8,927,453
Patent
8,927,453
Molybdenum and tungsten nanostructures and methods for making and using same
The present invention provides molybdenum and tungsten nanostructures, for example, nanosheets and nanoparticles, and methods of making and using same, including using such nanostructures as catlysts for hydrogen evolution reactions.
Brookhaven National Laboratory 01/06/2015
Issued
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
BSA 12-28PrototypeAvailable01/10/201401/10/2014

Contact BNL About This Technology

To: Avijit Sen<asen@bnl.gov>