Nitrogen and phosphorous doped carbon supported nanoparticle platinum electrocatalyst and method of making
AssigneeTDA Research, Inc.
InventorsVinh The Nguyen, Steven Dietz, Steve Paglieri
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Abstract
A platinum-carbon electrocatalyst material comprising a carbon support having a minimum BET surface area of 1000 m2/g, a nitrogen content of at least 2.5 weight percent, which is present in the form of pyridine, pyridone or pyrrole, a phosphorous content of at least 3 weight percent, which is present in the form of phosphate and phosphonate, and a plurality of platinum nanoparticles dispersed on the carbon support having a maximum average particle diameter of 1.5 nm.
Claims7
A platinum-carbon electrocatalyst material comprising:
- (a) a carbon support having a minimum BET surface area of 1000 m2/g;
- (b) a nitrogen content of at least 2.5 weight percent, which is present in the form of pyridine, pyridone or pyrrole;
- (c) a phosphorous content of at least 3 weight percent, which is present in the form of phosphate and phosphonate;
- and
- (d) a plurality of platinum nanoparticles dispersed on the carbon support having a maximum average particle diameter of 1.5 nm.
A method of making a platinum-carbon electrocatalyst material comprising a carbon support having a minimum BET surface area of 1000 m2/g;
- a nitrogen content of at least 2.5 weight percent, which is present in the form of pyridine, pyridone or pyrrole;
- a phosphorous content of at least 3 weight percent, which is present in the form of phosphate and phosphonate;
- and a plurality of platinum nanoparticles dispersed on the carbon support having a maximum average particle diameter of 1.5 nm, wherein the method comprises the steps of:
- (a) providing a carbon support material having a minimum BET surface area of 1000 m2/g, a nitrogen content of at least 2.5 weight percent, which is present in the form of pyridine, pyridone or pyrrole;
- a phosphorous content of at least 3 weight percent, which is present in the form of phosphate and phosphonate;
- and
- (b) depositing platinum nanoparticles with a maximum average diameter of 1.5 nm onto the carbon support material using an in situ vapor-phase dissociative process.
Dependencies are inferred from the claim text.