Electrode including metal nanoparticles having conductive polymer shell and conductive film and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-11233246-B2
Application number	US-201816215010-A
Country	US
Kind code	B2
Filing date	Dec 10, 2018
Priority date	Aug 20, 2018
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

Disclosed are an electrode including a polymer matrix and a catalyst including metal nanoparticles and a conductive polymer shell and, a method of preparing the same. According to various exemplary embodiments of the present invention, various hybrid nano-composites may be formed by a combination of other conductive polymers than P3HT with metal nanoparticles.
For example, the method may include selectively disposing metal nanoparticles to a surface modified conductive polymer including a block copolymer of two or more types of conductive polymers.

First claim

What is claimed is:

1. An electrode for fuel cells comprising:
a polymer matrix; and
a catalyst dispersed in the polymer matrix,
wherein the catalyst has a core-shell structure comprising:
a core comprising metal nanoparticles; and
a shell comprising a conductive polymer,
wherein the core comprises one or more selected from the group consisting of platinum (Pt), gold (Au), tin (Sn), copper (Cu), nickel (Ni), iron (Fe), cobalt (Co), zinc (Zn), titanium (Ti), chromium (Cr), manganese (Mn), iridium (Ir), tantalum (Ta), molybdenum (Mo), rhodium (Rh), osmium (Os), rhenium (Re), tungsten (W), vanadium (V), cadmium (Cd), selenium (Se), tellurium (Te), indium (In) and silver (Ag), and
wherein the conductive polymer comprises one or more selected from the group consisting of polytriphenylamine, polyacetylene (PA), polythiophene (PT), poly(3-alkyl)thiophene (P3AT), polypyrrole (PPY), polyisothianapthelene (PITN), polyethylene dioxythiophene (PEDOT), polyparaphenylenevinylene (PPV), poly(2, 5-dialkoxy)paraphenylenevinylene, polyparaphenylene (PPP), polyparaphenylene sulfide (PPS), polyheptadiene (PHT), poly(3-hexyl)thiophene (P3HT), polycarbazole and polyaniline (PANI).

2. The electrode for fuel cells of claim 1 , wherein the catalyst comprises:
an amount of about 80% by weight to 90% by weight of the core; and
an amount of about 10% by weight to 20% by weight of the shell,
all % by weight based on the total weight of the catalyst.

3. The electrode for fuel cells of claim 1 , wherein the polymer matrix comprises a block copolymer.

4. The electrode for fuel cells of claim 3 , wherein the block copolymer is a copolymer comprising:
i) one or a more selected from the group consisting of polystyrene, nylon, polyethylene, polyisoprene, SBS rubber, polydicyclopentadiene, polytetrafluoroethylene, poly(phenylene sulfide), silicone, aramid, cellulose, rayon, poly(methyl methacrylate), poly(vinylidene chloride), poly(vinylidene fluoride), carbon fibers, polyisobutylene, polychloroprene, polybutadiene, poly(vinyl chloride), poly(vinyl acetate), polyvinylpyrrolidone, polycyanoacrylate, polyacrylonitrile, poly(arylene ethynyl ene), poly(phenylene ethynylene), polyaniline, polyphenylene, ethylene vinyl alcohol, fluoroplastic, ionomers, polyacrylate, polybutylene, chlorinated polyethylene, polymethylpentene, polypropylene, polyamide, polyamide-imide, polyaryletherketone, polycarbonate, polyketone, polyester, polyetheretherketone, polyetherimide, polyethersulfone, polyimide, polyphenylene oxide, polyphenylene sulfide, polyphthalamide, polysulfone, polyethylene terephthalate, an epoxy resin, polyurethane, polyvinylpyridine and polylactide; and
ii) one or more selected from the group consisting of polytriphenylamine, polyacetylene (PA), polythiophene (PT), poly(3-alkyl)thiophene (P3AT), polypyrrole (PPY), polyisothianapthelene (PITN), polyethylene dioxythiophene (PEDOT), polyparaphenylene vinylene (PPV), poly(2,5dialkoxy)paraphenylene vinylene, polyparaphenylene (PPP), polyparaphenylene sulfide (PPS), polyheptadiene (PHT), poly(3-hexyl)thiophene (P3HT), polycarbazole and polyaniline (PANI).

5. The electrode for fuel cells of claim 1 , wherein the polymer matrix comprises:
a first region comprising an A block; and
a second region comprising a B block,
wherein the polymer matrix has a lamellar structure in which the first region and the second region are alternately disposed.

6. The electrode for fuel cells of claim 5 , wherein:
the first region comprises one or more selected from the group consisting of polystyrene, nylon, polyethylene, polyisoprene, SBS rubber, polydicyclopentadiene, polytetrafluoroethylene, poly(phenylene sulfide), silicone, aramid, cellulose, rayon, poly(methyl methacrylate), poly(vinylidene chloride), poly(vinylidene fluoride), carbon fibers, polyisobutylene, polychloroprene, polybutadiene, poly(vinyl chloride), poly(vinyl acetate), polyvinylpyrrolidone, polycyanoacrylate, polyacrylonitrile, poly(arylene ethynylene), poly(phenylene ethynylene), polyaniline, polyphenylene, ethylene vinyl alcohol, fluoroplastic, ionomers, polyacrylate, polybutylene, chlorinated polyethylene, polymethylpentene, polypropylene, polyamide, polyamide-imide, polyaryletherketone, polycarbonate, polyketone, polyester, polyetheretherketone, polyetherimide, polyethersulfone, polyimide, polyphenylene oxide, polyphenylene sulfide, polyphthalamide, polysulfone, polyethylene terephthalate, an epoxy resin, polyurethane, polyvinylpyridine and polylactide; and
the second region comprises one or more thereof selected from the group consisting of polytriphenylamine, polyacetylene (PA), polythiophene (PT), poly(3-alkyl)thiophene (P3AT), polypyrrole (PPY), polyisothianapthelene (PITN), polyethylene dioxythiophene (PEDOT), polyparaphenylene vinylene (PPV), poly(2,5-dialkoxy)paraphenylene vinylene, polyparaphenylene (PPP), polyparaphenylene sulfide (PPS), polyheptadiene (PHT), poly(3-hexyl)thiophene (P3HT), polycarbazole and polyaniline (PANI).

7. The electrode for fuel cells of claim 5 , wherein the catalyst is disposed at an interface between the first region and the second region.

8. The electrode for fuel cells of claim 1 , wherein the electrode comprises:
an amount of about 80% by weight to 90% by weight of the polymer matrix; and
an amount of about 10% by weight to 20% by weight of the catalyst,
% by weight based on the total weight of the electrode.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp
• Korea Advanced Inst Sci & Tech

Inventors

• Song You Jung
• Yun Hong Seok
• Kim Jin Seong
• Kim Bum Joon
• Kim Young Kwon

Classifications

• C08G61/126

  with a five-membered ring containing one sulfur atom in the ring · CPC title

• H01M4/92

  Metals of platinum group (H01M4/94 {, H01M4/9058} take precedence) · CPC title

• H01M4/9075

  Catalytic material supported on carriers, e.g. powder carriers (H01M4/8807, H01M4/881, H01M4/8814, H01M4/925 take precedence) · CPC title

• H01M4/88

  Processes of manufacture · CPC title

• H01M4/8663

  Selection of inactive substances as ingredients for catalytic active masses, e.g. binders, fillers · CPC title