ClassID:

213301

H01M4/923 - CPC Classification

Classification description:

Electrodes; Inert electrodes with catalytic activity, e.g. for fuel cells; Selection of catalytic material; Metals of platinum group Compounds thereof with non-metallic elements

Recent Application in this class:
#1
20260142197
2026-05-21

CARBON NITRIDE COATED NITROGEN DOPED PtNi OXYGEN REDUCTION REACTION CATALYST FOR PROTON EXCHANGE MEMBRANE FUEL CELLS

#2
20260062821
2026-03-05

ELECTRODE, MEMBRANE ELECTRODE ASSEMBLY, ELECTROCHEMCIAL CELL, STACK, AND ELECTROLYZER

#3
20250379238
2025-12-11

NITRIDED TERNARY PLATINUM (Pt) CONTAINING NANOPARTICLE CATALYST FOR FUEL CELLS

#4
20250316718
2025-10-09

ELECTROCHEMICAL OXYGEN REDUCTION CATALYST

#5
20250246642
2025-07-31

OXYGEN EVOLUTION REACTION CATALYST

#6
20250167254
2025-05-22

FUEL CELLS HAVING HIGH CAPACITANCE ANODES FOR MITIGATING AIR-AIR START DEGRADATION

#7
20250125379
2025-04-17

CARBON-ENCAPSULATED ALLOY CATALYST, PREPARATION METHOD THEREFOR AND USE THEREOF

#8
20250023060
2025-01-16

CATALYST AND METHOD OF PREPARING SAME

#9
20250023059
2025-01-16

ELECTRODES COMPRISING LIQUID/GAS DIFFUSION LAYERS AND SYSTEMS AND METHODS FOR MAKING AND USING THE SAME

#10
20250015311
2025-01-09

CATALYST AND METHOD OF PREPARING SAME

#11
20240266570
2024-08-08

HUMIDITY RESPONSIVE ENERGY HARVESTER AND METHOD FOR MANUFACTURING THE SAME

#12
20240222652
2024-07-04

ULTRA-LOW PLATINUM GROUP METAL CONTAINING ANODE ELECTROCATALYSTS FOR ACID MEDIATED PROTON EXCHANGE MEMBRANE FUEL CELLS

#13
20230163317
2023-05-25

CATALYST FOR FUEL CELL, FUEL CELL COMPRISING THE SAME AND PREPARATION METHOD OF THE CATALYST FOR FUEL CELL

#14
20230132969
2023-05-04

MEMBRANE ELECTRODE ASSEMBLY CATALYST MATERIAL

#15
20230126404
2023-04-27

ELECTRODE CATALYST, COMPOSITION FOR FORMING GAS DIFFUSION ELECTRODE, GAS DIFFUSION ELECTRODE, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL STACK

#16
20230061774
2023-03-02

A HIGHLY ACTIVE AND DURABLE NON-NOBLE METAL-SULPHIDE BASED HER CATALYST AND THE PREPARATION THEREOF

#17
20220336822
2022-10-20

HIGH PERFORMANCE PLATINUM-BASED CATALYST COMBINED WITH CARBON SUPPORT ENGINEERING

#18
20220259750
2022-08-18

Catalyst for oxygen generation reaction during water electrolysis

#19
20220190357
2022-06-16

Bifunctional oxygen electrocatalyst, preparation method and use thereof

#20
20220062867
2022-03-03

Method for preparing ternary alloy catalyst with polydopamine coating and ternary alloy catalyst prepared thereby

#21
20220059849
2022-02-24

CATALYST

#22
20210384520
2021-12-09

Hematin modified bilirubin oxidase cathode

#23
20210359311
2021-11-18

Catalyst and method of preparing same

#24
20210288335
2021-09-16

Method of manufacturing catalyst ink free of eluted transition metal for fuel cell

#25
20210036333
2021-02-04

Method of manufacturing anode dual catalyst for fuel cell for preventing reverse voltage phenomenon and dual catalyst manufactured thereby

#26
20200411933
2020-12-31

SOLUBLE OXYGEN EVOLVING CATALYSTS FOR RECHARGEABLE METAL-AIR BATTERIES

#27
20200411881
2020-12-31

Catalyst complex for fuel cell and method of manufacturing same

#28
20200321622
2020-10-08

Catalyst

#29
20200321621
2020-10-08

pH-universal aqueous rechargeable hydrogen batteries

#30
20200067105
2020-02-27

ELECTRODE CATALYST FOR FUEL CELLS AND METHOD OF MANUFACTURING THE SAME

#31
20190386321
2019-12-19

Oxygen reduction catalyst, electrode, membrane electrode assembly, and fuel cell

#32
20190379058
2019-12-12

Electrocatalyst composition comprising noble metal oxide supported on tin oxide

#33
20190355995
2019-11-21

Catalyst and electrode catalyst layer, membrane electrode assembly, and fuel cell using the catalyst

#34
20190245212
2019-08-08

Oxygen evolution catalyst

#35
20190177461
2019-06-13

Particles suitable for catalyzing oxygen reduction or hydrogen oxidation and being proton-conducting by grafting specific proton-conducting fluorinated polymers to the surface thereof

#36
20190109329
2019-04-11

Method for producing proton-conducting platinum particles with a large active surface area and surface-grafted with specific, proton-conducting polymers

#37
20190067737
2019-02-28

Method for fabricating a polymeric material for use in an energy storage apparatus, a polymeric material and an energy storage apparatus comprising thereof

#38
20180375107
2018-12-27

Catalyst for oxygen reduction electrode and method for manufacturing same

#39
20180287237
2018-10-04

Metal-Air Battery

#40
20180131008
2018-05-10

Nitrogen-functionalized platinum-iridium electrocatalyst

#41
20180040903
2018-02-08

Electrode for electrochemical cells and composition thereof

#42
20180034065
2018-02-01

Electrocatalyst and fuel cell employing the same

#43
20170309924
2017-10-26

SOLID POLYMER ELECTROLYTE FUEL CELL WITH IMPROVED VOLTAGE REVERSAL TOLERANCE

#44
20170282171
2017-10-05

Catalyst particles, carbon-supported catalyst particles and fuel cell catalysts, and methods of manufacturing such catalyst particles and carbon-supported catalyst particles

#45
20170117554
2017-04-27

Method for producing fine catalyst particles and method for producing carbon-supported catalyst

#46
20160351918
2016-12-01

CNT sheet substrates and transition metals deposited on same

#47
20160301083
2016-10-13

Method for producing fuel cell electrode

#48
20160276677
2016-09-22

HYDROGEN OXIDATION CATALYST

#49
20160226076
2016-08-04

Catalyst support particle structures

#50
20160226074
2016-08-04

Fuel cell electrode having non-ionomer proton-conducting material

#51
20160204449
2016-07-14

MODIFIED BIMETALLIC NANOPARTICLE AND A PROCESS TO PREPARE THE SAME

#52
20160190606
2016-06-30

Positive electrode for lithium-air battery and method for preparing the same

#53
20160190602
2016-06-30

Catalyst for solid polymer fuel cells and method for producing same

#54
20160087281
2016-03-24

Catalyst and electrode catalyst layer, membrane electrode assembly, and fuel cell using the catalyst

#55
20160077035
2016-03-17

Electrode for electrochemical measurement, electrolysis cell for electrochemical measurement, analyzer for electrochemical measurement, and methods for producing same

#56
20160043410
2016-02-11

TUBE-TYPE SOLID-OXIDE SECONDARY BATTERY

#57
20150343428
2015-12-03

Metal-carbon hybrid composite having nitrogen-doped carbon surface and method for manufacturing the same

#58
20150340708
2015-11-26

Process for preparing nanoparticles of a catalyst for cathodic reduction of dioxygen in the presence of methanol

#59
20150207150
2015-07-23

Electrode assembly and method for its preparation

#60
20150155570
2015-06-04

Selective catalyst, particularly for electroreduction of oxygen, an electrochemical system containing thereof, an palladium-inert gas alloy and use thereof, and a cell, particularly a photovoltaic cell containing thereof

#61
20150147682
2015-05-28

Nitride stabilized core/shell nanoparticles

#62
20150111126
2015-04-23

CATALYST TREATMENT FOR SOLID POLYMER ELECTROLYTE FUEL CELLS

#63
20150086903
2015-03-26

Fuel cell electrode catalyst including a core containing platinum, a transition metal, and a nonmetal element and a shell containing platinum and the nonmetal element electrode including the same, and method for preparing the same

#64
20150021194
2015-01-22

Iridium complexes for electrocatalysis

#65
20140349203
2014-11-27

Electrocatalyst for fuel cells and method for producing said electrocatalyst

#66
20140322631
2014-10-30

PRECIOUS METAL OXIDE CATALYST FOR WATER ELECTROLYSIS

#67
20140315118
2014-10-23

Polymer electrolyte membrane fuel cell including complex catalyst and method for producing the complex catalyst

#68
20140308594
2014-10-16

Gradient porous electrode architectures for rechargeable metal-air batteries

#69
20140295325
2014-10-02

SELF-ASSEMBLY PLATINUM NANOSTRUCTURE WITH THREE DIMENSIONAL NETWORK STRUCTURE AND METHOD OF PREPARING THE SAME

#70
20140295272
2014-10-02

Metal oxygen battery and a method for manufacturing oxygen storage material used therein

#71
20140248553
2014-09-04

Electrode compartment for an electrochemical cell, a refreshing system for it and an emulsion to be used therefore

#72
20140072901
2014-03-13

Crown ether containing PEM electrode

#73
20140051860
2014-02-20

Process for producing a nitrogen-containing carbon alloy

#74
20140011665
2014-01-09

Rapid synthesis of fuel cell catalyst using controlled microwave heating

#75
20130344413
2013-12-26

Method for preparing fuel cell electrode catalyst by simultaneous evaporation, method for preparing fuel cell electrode comprising catalyst prepared thereby and fuel cell comprising the same

#76
20130337997
2013-12-19

Cyclic compound, its metal complex and modified metal complex

#77
20130260267
2013-10-03

Membrane electrode assemblies and fuel-cell systems with surface-modified electrocatalysts and methods for electrocatalyst surface modification

#78
20130248378
2013-09-26

Electrode for electrochemical measurement, electrolysis cell for electrochemical measurement, analyzer for electrochemical measurement, and methods for producing same

#79
20130183592
2013-07-18

Porous carbonaceous composite material, positive electrode and lithium air battery including the material, and method of preparing the material

#80
20130150230
2013-06-13

Bulk metallic glass nanowires for use in energy conversion and storage devices

#81
20130022890
2013-01-24

SOLID POLYMER ELECTROLYTE FUEL CELL WITH IMPROVED VOLTAGE REVERSAL TOLERANCE

#82
20120264594
2012-10-18

Electrocatalysts based on mono/plurimetallic carbon nitrides for fuel cells fueled with hydrogen

#83
20120189943
2012-07-26

Synthesis of stable and durable catalyst composition for fuel cell

#84
20120189933
2012-07-26

ANODE CATALYST LAYERS FOR DIRECT OXIDATION FUEL CELLS

#85
20120122666
2012-05-17

FUEL CELL ELECTRODE CATALYST, METHOD FOR EVALUATING PERFORMANCE OF OXYGEN-REDUCING CATALYST, AND SOLID POLYMER FUEL CELL COMPRISING THE FUEL CELL ELECTRODE CATALYST

#86
20120094210
2012-04-19

INK COMPRISING POLYMER PARTICLES, ELECTRODE, AND MEA

#87
20120088186
2012-04-12

Catalyst and Method for the Electrochemical Oxidation of Methane

#88
20120058417
2012-03-08

Carbide stabilized catalyst structures and method of making

#89
20120028170
2012-02-02

ELECTROCATALYST OF CARBON NANOTUBES ENCAPSULATING PLATINUM GROUP METAL NANOPARTICLES FOR FUEL CELLS

#90
20120028137
2012-02-02

SOLUBLE OXYGEN EVOLVING CATALYSTS FOR RECHARGEABLE METAL-AIR BATTERIES

#91
20110318662
2011-12-29

PLATINUM PHOSPHIDE AS A CATHODE CATALYST FOR PEMFCS AND PHOSPHOROUS TREATMENT OF CATALYSTS FOR FUEL CELL

#92
20110262344
2011-10-27

Catalyst for electrochemical reduction of oxygen

#93
20110250515
2011-10-13

Electrode compartment for an electrochemical cell, a refreshing system for it and an emulsion to be used therefore

#94
20110245071
2011-10-06

NITROGEN-CONTAINING CARBON ALLOY, PROCESS OF PRODUCING THE SAME, AND CARBON CATALYST CONTAINING THE SAME

#95
20110177425
2011-07-21

Electrode catalyst for fuel cell, method of manufacturing the same, membrane electrode assembly including the electrode catalyst, and fuel cell including the membrane electrode assembly

#96
20110143257
2011-06-16

Method of enhancing electrodes

#97
20110143256
2011-06-16

Method of enhancing electrodes

#98
20110143253
2011-06-16

CATALYST AND METHOD FOR PRODUCING THE SAME, MEMBRANE ELECTRODE ASSEMBLY AND METHOD FOR PRODUCING THE SAME, FUEL CELL MEMBER AND METHOD FOR PRODUCING THE SAME, FUEL CELL, AND ELECTRICITY STORAGE DEVICE

#99
20110130270
2011-06-02

Method for preparing fuel cell electrode catalyst and solid polymer fuel cell

#100
20110111322
2011-05-12

FUEL CELL ELECTRODE CATALYST, METHOD FOR EVALUATING PERFORMANCE OF OXYGEN-REDUCING CATALYST, AND SOLID POLYMER FUEL CELL COMPRISING THE FUEL CELL ELECTRODE CATALYST

#101
20110105311
2011-05-05

FUEL CELL ELECTRODE CATALYST, METHOD FOR EVALUATING PERFORMANCE OF OXYGEN-REDUCING CATALYST, AND SOLID POLYMER FUEL CELL COMPRISING THE FUEL CELL ELECTRODE CATALYST

#102
20110015059
2011-01-20

Cyclic compound, its metal complex and modified metal complex

#103
20100323274
2010-12-23

Fuel cell electrode catalyst and polymer electrolyte fuel cell using the same

#104
20100248076
2010-09-30

Electrode catalyst for fuel cells, method of preparing the electrode catalyst, and fuel cell including electrode containing the electrode catalyst

#105
20100240527
2010-09-23

PROCESS FOR PRODUCING CATALYST ELECTRODE

#106
20100236937
2010-09-23

Electrode

#107
20100213420
2010-08-26

Fine particle composite, method for producing the same, catalyst used for solid polymer fuel cell, and solid polymer fuel cell

#108
20100203420
2010-08-12

FUEL CELL ELECTRODE CATALYST, METHOD FOR EVALUATING PERFORMANCE OF OXYGEN-REDUCING CATALYST, AND SOLID POLYMER FUEL CELL COMPRISING THE FUEL CELL ELECTRODE CATALYST

#109
20100196790
2010-08-05

MEMBRANE AND ELECTRODE ASSEMBLY AND FUEL CELL

#110
20100183943
2010-07-22

Membrane electrode assembly and polymer electrolyte fuel cell

#111
20100151362
2010-06-17

PARTICULATE CARBON CARRYING FINE PARTICLE THEREON, PROCESS FOR PRODUCTION THEREOF, AND ELECTRODES FOR FUEL CELLS

#112
20100003569
2010-01-07

Chalcogen catalysts for polymer electrolyte fuel cell

#113
20090280380
2009-11-12

PROTON CONDUCTING MEMBRANE FOR A FUEL CELL OR A REACTOR BASED ON FUEL CELL TECHNOLOGY

#114
20090233153
2009-09-17

Electrodes of a fuel cell

#115
20090202871
2009-08-13

Metal-coated carbon surfaces for use in fuel cells

#116
20090202869
2009-08-13

CARBON PARTICLE HAVING DEPOSITED FINE PARTICLES, PROCESS FOR PRODUCING THE SAME, AND ELECTRODE FOR FUEL CELL

#117
20090202868
2009-08-13

FUEL CELL UNIT OF DMFC TYPE AND ITS OPERATION

#118
20090130502
2009-05-21

TRANSITION METAL-CONTAINING CATALYSTS AND PROCESSES FOR THEIR PREPARATION AND USE AS FUEL CELL CATALYSTS

#119
20090111681
2009-04-30

Electrocatalysts based on mono/plurimetallic carbon nitrides for fuel cells fueled with hydrogen

#120
20090075139
2009-03-19

NANOPOROUS/MESOPOROUS PALLADIUM CATALYST

#121
20090068544
2009-03-12

FUEL CELL USING POLYHYDRIC MIXTURES DIRECTLY AS A FUEL

#122
20090053565
2009-02-26

Fuel cell, components and systems

#123
20090053561
2009-02-26

CATALYST LAYERS AND RELATED METHODS

#124
20090029221
2009-01-29

Functional anchors connecting graphene-like carbon to metal

#125
20090011311
2009-01-08

Cathode catalyst for fuel cell, method of preparing same, and membrane-electrode assembly comprising same

#126
20080318106
2008-12-25

Catalyst for a cathode of a mixed reactant fuel cell, membrane-electrode assembly for a mixed reactant fuel cell including the same, and mixed reactant fuel cell system including the same

#127
20080287282
2008-11-20

PROCESS FOR RECOVERY OF RUTHENIUM FROM A RUTHENIUM-CONTAINING SUPPORTED CATALYST MATERIAL

#128
20080274391
2008-11-06

Multifunctional tunable metal-phosphate composite electrocatalyst for efficient oxygen reduction and methanol oxidation for applications in fuel cells and electrolysis

#129
20080274269
2008-11-06

Method of preparing metal phosphate composite catalyst

#130
20080268326
2008-10-30

CATALYST LAYER, MEMBRANE ELECTRODE ASSEMBLY, FUEL CELL HAVING MEMBRANE ELECTRODE ASSEMBLY, METHOD OF PRODUCING CATALYST LAYER, AND METHOD OF PRODUCING MEMBRANE ELECTRODE ASSEMBLY

#131
20080254362
2008-10-16

Nano-composite structures, methods of making, and use thereof

#132
20080241640
2008-10-02

Photocatalytic deposition of metals and compositions comprising the same

#133
20080226895
2008-09-18

Nanoparticles comprising a metal core and an organic double coating useful as catalysts and device containing the nanoparticles

#134
20080220296
2008-09-11

PtRu core-shell nanoparticles for heterogeneous catalysis

#135
20080220244
2008-09-11

Supercritical Fluids in the Formation and Modification of Nanostructures and Nanocomposites

#136
20080202923
2008-08-28

Catalyst for electrochemical reduction of oxygen

#137
20080200329
2008-08-21

Method for Producing Catalyst

#138
20080199749
2008-08-21

ORGANIC ANODES FOR HYDROCARBON FUEL CELLS

#139
20080121520
2008-05-29

Carbon-supported metal sulphide catalyst for electrochemical oxygen reduction

#140
20080113257
2008-05-15

MEMBRANE ELECTRODE ASSEMBLIES FOR USE IN FUEL CELLS

#141
20080102350
2008-05-01

Catalyst for cathode of fuel cell, preparing method and fixing method thereof, and fuel cell including same

#142
20080081760
2008-04-03

Electrode catalyst for fuel cell, electrode for fuel cell, and fuel cell

#143
20080066376
2008-03-20

Catalytic liquid fuel

#144
20080050640
2008-02-28

Electrocatalyst

#145
20080038624
2008-02-14

Proton-conducting polymer membrane coated with a catalyst layer, said polymer membrane comprising phosphonic acid polymers, membrane/electrode unit and use thereof in fuel cells

#146
20080026275
2008-01-31

Sol-Gel Derived Composites Comprising Oxide or Oxyhydroxide Matrices With Noble Metal Components and Carbon for Fuel Cell Catalysts

#147
20080008920
2008-01-10

Catalyst for a fuel cell, method of preparing the same, and membrane-electrode assembly and fuel cell system including the same

#148
20070298303
2007-12-27

PROCESSING TECHNIQUES FOR THE FABRICATION OF SOLID ACID FUEL CELL MEMBRANE ELECTRODE ASSEMBLIES

#149
20070298293
2007-12-27

Electrode for fuel cell and, membrane-electrode assembly and fuel cell system including the same

#150
20070275290
2007-11-29

Catalyst for a fuel cell, a method of preparing the same, and a membrane-electrode assembly for a fuel cell and a fuel cell system including the same

#151
20070243453
2007-10-18

Membrane-electrode assembly for mixed reactant fuel cell and mixed reactant fuel cell system comprising same

#152
20070224478
2007-09-27

Cathode for fuel cell and process of the same

#153
20070219086
2007-09-20

Catalyst for oxygen reduction

#154
20070212584
2007-09-13

Carbon-based fuel cell

#155
20070190397
2007-08-16

Cathode catalyst for fuel cell, and membrane-electrode assembly for fuel cell and fuel cell system including same

#156
20070148531
2007-06-28

CATALYST ELECTRODE, PRODUCTION PROCESS THEREOF, AND POLYMER ELECTROLYTE FUEL CELL

#157
20070142222
2007-06-21

Aerogel and metallic compositions

#158
20070128501
2007-06-07

Chalcogen catalysts for polymer electrolyte fuel cell

#159
20070128499
2007-06-07

CATALYST FOR FUEL CELLS

#160
20070128498
2007-06-07

Catalyst for cathode of fuel cell, and membrane-electrode assembly for fuel cell

#161
20070122686
2007-05-31

Cathode catalyst for fuel cell, membrane-electrode assembly for fuel cell including same and fuel cell system including same

#162
20070122685
2007-05-31

Supported ruthenium cathode catalyst for fuel cell

#163
20070122683
2007-05-31

Cathode catalyst for fuel cell, method of preparing same, and membrane-electrode assembly and fuel cell comprising same

#164
20070111084
2007-05-17

Methanol tolerant catalyst material containing membrane electrode assemblies and fuel cells prepared therewith

#165
20070099066
2007-05-03

Catalyst layer for polymer electrolyte fuel cell, process for producing the catalyst layer, and polymer electrolyte fuel cell

#166
20070078052
2007-04-05

Methanol tolerant catalyst material

#167
20070037039
2007-02-15

Platinum-copper-tungsten fuel cell catalyst

#168
20060260955
2006-11-23

Electrode catalyst for oxygen reduction and gas diffusion electrode

#169
20060249378
2006-11-09

Process for the production of a gas diffusion electrode

#170
20060234039
2006-10-19

Method of making metal-coated carbon surfaces for use in fuel cells

#171
20060228603
2006-10-12

Fuel cell and membrane electrode assembly

#172
20060216576
2006-09-28

Catalyst materials for fuel cells

#173
20060210852
2006-09-21

Electrochemical preferential oxidation of carbon monoxide from reformate

#174
20060204832
2006-09-14

Liquid fuel cell, membrane electrode assembly and cathode

#175
20060099488
2006-05-11

Fuel cell, membrane electrode assembly, catalyst used therefor, and method of producing catalyst

#176
20060016122
2006-01-26

Performance additive for fuel cells

#177
20060014068
2006-01-19

Processing techniques for the fabrication of solid acid fuel cell membrane electrode assemblies

#178
20050181934
2005-08-18

Catalyst supporting method for polymer electrolyte fuel cell

#179
20050158611
2005-07-21

Catalyst material and method of manufacturing the same and fuel cell using the same

#180
20050142428
2005-06-30

Fuel cell and membrane electrode assembly

#181
20050084740
2005-04-21

Platinum-impregnated hydrous tin oxide catalysts

#182
20050053819
2005-03-10

Solid oxide fuel cell interconnect with catalyst coating

#183
20050031926
2005-02-10

Catalyst material and method of manufacturing the same and fuel cell using the same