Non-noble metal based catalyst and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10615424-B2
Application number	US-201715597634-A
Country	US
Kind code	B2
Filing date	May 17, 2017
Priority date	Dec 21, 2016
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

Embodiments of the present invention relate to non-noble metal-based catalysts used as electrode materials for fuel cells, and methods of manufacturing the same.
In an aspect of the present inventions, provided herein is a non-noble metal-based catalyst for an electrode of a fuel cell. The non-noble metal-based catalyst comprise a porous carbon having a first pore and a second pore smaller than the first pore. The first pore has a pore size of about 5 to 100 nm and has an inner wall into which an active site of the non-noble metal-based catalyst is introduced.

First claim

What is claimed is:

1. A non-noble metal-based catalyst for an electrode of a fuel cell comprising:
a porous carbon having a first pore and a second pore smaller than the first pore,
wherein the first pore has a pore size of about 5 to 100 nm and has an inner wall into which an active site of the non-noble metal-based catalyst is introduced,
wherein the active site of the non-noble metal-based catalyst is formed by a non-noble metal-based catalyst precursor, and the non-noble metal-based catalyst precursor has a diameter less than that of the first pores and greater than that of the second pores.

2. The non-noble metal-based catalyst according to claim 1 , wherein the porous carbon has a structure in which the first pore and the second pore are uniformly connected in a three-dimensional space.

3. The non-noble metal-based catalyst according to claim 1 , wherein the first pore has a pore size of about 15 to 60 nm.

4. The non-noble metal-based catalyst according to claim 1 , wherein an active site of the non-noble metal-based catalyst is provided in a form represented by Formula 1 below:
M x N y   Formula 1

wherein x is an integer from greater than 0 to 1, y is an integer from 1 to 4, and M is a transition metal selected from iron (Fe), cobalt (Co), manganese (Mn), nickel (Ni) and chromium (Cr).

5. The non-noble metal-based catalyst according to claim 1 , wherein the non-noble metal-based catalyst precursor has a form in which at least one of phthalocyanine, phthalocyanine tetrasulfonate, octabutoxy phthalocyanine, hexadecafluoro phthalocyanine, octakis octyloxy phthalocyanine, tetra-tert-butyl phthalocyanine, tetraaza phthalocyanine, tetraphenoxy phthalocyanine, tetra-tert-butyl tetrakis dimethylamino phthalocyanine, tetrakis cumylphenoxy phthalocyanine, tetrakis pyridiniomethyl phthalocyanine, tetranitrophthalocyanine, naphthalocyanine, tetra-tert-butyl naphthalocyanine, tetraphenyl porphine, tetrakis pentafluorophenyl porphyrin, tetrakis methylpyridinio porphyrin tetratoluenesulfonate, tetraki strimethylammoniophenyl porphyrin tetratoluenesulfonate, tetramethyl divinyl porphinedipropionic acid, tetrapyridyl porphine, octaethyl porphyrin, tetrakis methoxyphenyl porphine, tetraphenylporphine tetracarboxylic acid, tetrakis hydroxyphenyl porphine, tetrakis sulfonatophenyl porphine, etioporphyrin, 1, 10-phenanthroline, 1, 10-phenanthroline-5 ,6-dionedimethyl-1, 10-phenanthroline, dimethyl-1, 10-phenanthroline, dimethoxy-1, 10-phenanthroline, dimethoxy-1, 10-phenanthroline, amino-1, 10-phenanthroline, methyl-1, 10-phenanthroline, dihydroxy-1, 10-phenanthroline, tetramethyl-1, 10-phenanthroline, chloro-1, 10-phenanthroline, dichloro-1, 10-phenanthroline, nitro-1, 10-phenanthroline, bromo-1, 10-phenanthroline, tetrabromo- 1, 10-phenanthroline, pyrazino[1, 10]phenanthroline, diphenyl-1, 10-phenanthroline, dimethyl diphenyl-1, 10-phenanthroline, ethenyl formyl(hydroxy trimethyltetradecyl) trimethyl porphine dipropanoato, diethenyl tetramethyl porphine dipropanoato, bis((amino carboxyethyl)thio)ethyl tetramethyl porphine dipropanoato, dihydro dihydroxy tetramethyl divinyl porphine dipropionic acid lactonato, ethenyl(hydroxy trimethyl tetradecatrienyl) tetramethyl porphine dipropanoato, carboxyethenyl carboxyethyl dihydro bis(hydroxymethyl) tetramethyl porphine dicarboxylato, (dimethylbenzimidazolyl)cyanocobamide, curtis macrocycle, Jäager macrocycle and DOTA macrocycle, is coordinated to a metal.

6. The non-noble metal-based catalyst according to claim 5 , wherein the metal comprises at least one transition metal selected from iron (Fe), cobalt (Co), manganese (Mn), nickel (Ni), and chromium (Cr).

7. The non-noble metal-based catalyst according to claim 1 , wherein the non-noble metal-based catalyst precursor comprises a transition metal having a weight of about 1 to 50 wt % based on a total weight of the porous carbon.

8. The non-noble metal-based catalyst according to claim 1 , wherein the porous carbon has an anchoring site introduced into a surface of a pore of the porous carbon to enhance interactions between the porous carbon and the non-noble metal-based catalyst precursor.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp
• Postech Academy—Industry Found
• Postech Acad Ind Found

Inventors

• Lee Ju Hee
• Kim Won Jung
• Lee Seonggyu
• Lee Jinwoo

Classifications

• H01M4/90

  Selection of catalytic material · CPC title

• H01M4/8647

  consisting of more than one material, e.g. consisting of composites · CPC title

• H01M4/9083 Primary

  on carbon or graphite · CPC title

• H01M4/8605 Primary

  Porous electrodes · CPC title

• H01M4/8882

  Heat treatment, e.g. drying, baking · CPC title