公开(公告)号：US11799089B2

公开(公告)日：2023-10-24

申请号：US17571662

申请日：2022-01-10

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： So Young Lee ,  Seung Ju Lee ,  Jin Hyeon Choi ,  Jeawoo Jung ,  Hyoung-Juhn Kim ,  Sung Jong Yoo ,  Hee-Young Park ,  Bora Seo ,  Jin Young Kim ,  Jong Hyun Jang

IPC: H01M4/86 ,  H01M8/1004 ,  H01M4/90 ,  H01M4/92 ,  H01M8/1018 ,  H01M8/10

CPC classification number: H01M4/8663 ,  H01M4/8605 ,  H01M4/9041 ,  H01M4/9083 ,  H01M4/926 ,  H01M8/1004 ,  H01M8/1018 ,  H01M2008/1095 ,  H01M2300/0082

Abstract: The present disclosure relates to antioxidant for a polymer electrolyte membrane fuel cell electrode catalyst, which includes cerium hydrogen phosphate (HCe2(PO4)3(H2O)) in the form of a nanofiber, and an electrode and a membrane-electrode assembly including the same. The electrode for a polymer electrolyte membrane fuel cell of the present disclosure, wherein the antioxidant is dispersed, can improve the mechanical strength of an electrode catalyst layer and can minimize deterioration of chemical durability even after long-term operation. And, a fuel cell including the same can exhibit high output performance and can operate stably even after long-term operation.

公开(公告)号：US11342565B2

公开(公告)日：2022-05-24

申请号：US16841371

申请日：2020-04-06

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hee-Young Park ,  Jong Hyun Jang ,  Hyean-Yeol Park ,  Jea-Woo Jung ,  Katie Heeyum Lim ,  Hyoung-Juhn Kim ,  Dirk Henkensmeir ,  Sung Jong Yoo ,  Jin Young Kim ,  Hyun Seo Park ,  So Young Lee

IPC: H01M4/92 ,  H01M8/1004 ,  H01M4/88

Abstract: The present disclosure relates to a fuel cell catalyst and a manufacturing method thereof. The fuel cell catalyst can be used to manufacture a membrane electrode assembly having a catalyst layer of high density and high dispersion by solving the problem of aggregation of catalyst particles occurring during the formation of the catalyst layer, by using a catalyst including a polydopamine-coated support. In addition, the method for manufacturing the fuel cell catalyst does not require a solvent because the catalyst including the polydopamine-coated support, wherein from 0.1 to 1% of the hydroxy groups contained in catechol groups of the polydopamine are replaced by halide atoms, in solid phase are simply heat-treated by solid-to-solid dry synthesis which allows manufacturing of a fuel cell catalyst in a short time by eliminating the need for a washing process using a solvent and an extraction process for sampling after the synthesis.

公开(公告)号：US10461350B2

公开(公告)日：2019-10-29

申请号：US15686689

申请日：2017-08-25

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Hyun Jang ,  Hyoung-Juhn Kim ,  Sung Jong Yoo ,  Jin Young Kim ,  Hyung Chul Ham ,  Dirk Henkensmeier ,  So Young Lee ,  Hyun Seo Park ,  Youngseung Na ,  Min Gwan Ha

IPC: C25B3/04 ,  C25B13/08 ,  C25B11/04 ,  C25B9/08 ,  H01M8/1018 ,  H01M8/00 ,  H01M8/0276

Abstract: Disclosed is an electrochemical reaction cell enhancing a reduction reaction. The electrochemical reaction cell enhancing a reduction reaction comprises: a membrane electrode assembly including a polymer electrolytic membrane, a cathode formed by sequentially stacking a first gas diffusion layer and a first catalyst layer on one surface of the electrolytic membrane, and an anode formed by sequentially stacking a second catalyst layer and a second gas diffusion layer on the other surface of the electrolytic membrane; a first distribution plate stacked on the first catalyst layer to supply a reaction gas and a cathode electrolytic solution dissolved with the reaction gas to the first catalyst layer along separate channels; and a second distribution plate stacked on the second gas diffusion layer to supply an anode electrolytic solution to the second gas diffusion layer.

公开(公告)号：US10236527B2

公开(公告)日：2019-03-19

申请号：US14983439

申请日：2015-12-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Dirk Henkensmeier ,  Dickson Joseph ,  Jong Hyun Jang ,  Jin Young Kim ,  Hyoung-Juhn Kim ,  Jonghee Han ,  Suk Woo Nam ,  Sung Pil Yoon

IPC: H01M8/1023 ,  H01M8/1039 ,  H01M8/1053 ,  H01M8/1067 ,  H01M8/1081

Abstract: Provided are a method for preparing a Nafion membrane having a through-pore free monolithic porous structure throughout the bulk of the membrane through a one-step process very easily and a Nafion membrane having a through-pore free monolithic porous structure obtained from the method. The Nafion membrane having such a porous structure may have an increased surface area, and thus may improve the membrane/catalyst interfacial area and transport characteristics.

公开(公告)号：US09509008B2

公开(公告)日：2016-11-29

申请号：US14627945

申请日：2015-02-20

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyoung-Juhn Kim ,  Jin Young Kim ,  Sung Jong Yoo ,  Jong Hyun Jang ,  Eun Ae Cho ,  Sun-Hee Choi ,  Jonghee Han ,  Hyung Chul Ham ,  Dirk Henkensmeier

IPC: C08G69/08 ,  H01M8/10 ,  C08J5/22 ,  C08G73/18 ,  H01M8/08

CPC classification number: H01M8/103 ,  C08G73/18 ,  C08J5/22 ,  C08J5/2256 ,  C08J2379/04 ,  H01M8/083 ,  H01M8/1072 ,  H01M2008/1095 ,  H01M2300/0082 ,  Y02E60/521 ,  Y02P70/56

Abstract: A polybenzimidazole based polymer in which substituted or non-substituted benzyl groups are introduced to the two nitrogen atoms of benzimidazole ring. The benzimidazole ring is not decomposed by the attack of hydroxide ions but shows excellent alkali resistance, and thus maintains high ion conductivity. The polybenzimidazole based polymers are particularly useful for not only solid alkali exchange membrane fuel cells (SAEMFC) but also various industrial fields in which polybenzimidazole based polymers are used.

Abstract translation: 将取代或未取代的苄基引入苯并咪唑环的两个氮原子的聚苯并咪唑基聚合物。 苯并咪唑环不被氢氧根离子的侵蚀分解，但耐碱性优异，因此保持高的离子传导性。 基于聚苯并咪唑的聚合物不仅可用于固体碱交换膜燃料电池（SAEMFC），还可用于其中使用聚苯并咪唑的聚合物的各种工业领域。

公开(公告)号：US11522200B2

公开(公告)日：2022-12-06

申请号：US16710336

申请日：2019-12-11

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sung Jong Yoo ,  Hee-Young Park ,  So Young Lee ,  Hyun Seo Park ,  Jin Young Kim ,  Jong Hyun Jang ,  Hyoung-Juhn Kim ,  Pil Kim ,  Yeonsun Sohn ,  Jiho Lee

IPC: H01M4/86 ,  H01M4/96 ,  H01M4/90

Abstract: The present disclosure is a method for manufacturing a catalyst for a fuel cell using the blood of slaughtered livestock. The method for manufacturing a catalyst for a fuel cell using the blood of slaughtered livestock of the present disclosure allows preparation of a catalyst for a fuel cell exhibiting high redox reaction activity and very superior durability as compared to a commercially available platinum catalyst through a very simple process of purification of the blood of slaughtered livestock and hydrothermal synthesis. In addition, the method is very economical in that a catalyst is prepared using the pure blood of livestock only without an artificial additive, waste disposal cost can be reduced by recycling the blood of livestock and a high-performance catalyst capable of replacing the expensive platinum catalyst can be prepared.

公开(公告)号：US11214497B2

公开(公告)日：2022-01-04

申请号：US16534294

申请日：2019-08-07

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  INDUSTRIAL COOPERATION FOUNDATION CHONBUK NATIONAL UNIVERSITY ,  GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS

Inventor： Sung Jong Yoo ,  Sehyun Lee ,  Hee-Young Park ,  So Young Lee ,  Hyun Seo Park ,  Jin Young Kim ,  Jong Hyun Jang ,  Hyoung-Juhn Kim ,  Pil Kim ,  Jae Young Jung ,  Yeonsun Sohn

IPC: C01G55/00 ,  B01J23/00 ,  B01J23/44

Abstract: Disclosed are a perovskite compound, a method for producing the perovskite compound, a catalyst for a fuel cell including the perovskite compound, and a method for producing the catalyst. The perovskite compound overcomes the low stability of palladium due to its perovskite structural properties. Therefore, the perovskite compound can be used as a catalyst material for a fuel cell. In addition, the use of palladium in the catalyst instead of expensive platinum leads to an improvement in the price competitiveness of fuel cells. The catalyst is highly durable and catalytically active due to its perovskite structure.

公开(公告)号：US11056693B2

公开(公告)日：2021-07-06

申请号：US15879237

申请日：2018-01-24

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Hyun Jang ,  Hee-Young Park ,  Hyoung-Juhn Kim ,  Dirk Henkensmeier ,  Sung Jong Yoo ,  Jin Young Kim ,  So Young Lee ,  Hyun Seo Park

IPC: H01M4/90 ,  H01M4/88

Abstract: An aryne-grafted carbon-supported catalyst and a method of preparing the same, and particularly to a carbon-supported catalyst having an organic anchor formed on the surface of a carbon support through aryne cycloaddition in order to improve the durability of a fuel cell catalyst, and a method of preparing the same. It is possible to form a covalent bonding selectively to a carbon support of a fuel cell catalyst in a solution by using 2-(trimethylsilyl)phenyl triflate or the like. In addition, the formed anchor prevents adhesion of metal catalyst particles of a fuel cell, and thus improves the durability of a fuel cell catalyst.

公开(公告)号：US10710877B2

公开(公告)日：2020-07-14

申请号：US15326118

申请日：2015-01-27

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Chang Won Yoon ,  Suk Woo Nam ,  Yeong Cheon Kim ,  Jonghee Han ,  Sung Pil Yoon ,  Hyoung-Juhn Kim ,  Taekhyun Oh ,  Tae Hoon Lim ,  Jin Young Kim ,  Sun-Hee Choi ,  Hyung Chul Ham

IPC: C01B3/22 ,  B01J8/00 ,  B01D53/26 ,  B01J23/44 ,  B01J27/24 ,  B01J35/00 ,  B01J37/08 ,  B01J37/18 ,  B01D5/00 ,  B01J27/26 ,  B01J8/20

Abstract: The present invention provides a hydrogen generating apparatus and a hydrogen generating method, wherein the hydrogen generating apparatus generates hydrogen by dehydrating formic acid, and comprises: a reactor for containing water and a heterogeneous catalyst; a formic acid feeder for feeding formic acid into the reactor; and a moisture remover for removing moisture generated from the reactor.

公开(公告)号：US10458943B2

公开(公告)日：2019-10-29

申请号：US15861998

申请日：2018-01-04

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： So Young Lee ,  Hyoung-Juhn Kim ,  Young Seung Na ,  Jin Young Kim ,  Sung Jong Yoo ,  Jong Hyun Jang ,  Jonghee Han ,  Suk Woo Nam

IPC: G01N27/62 ,  G01K13/00 ,  G01R27/26 ,  H01M8/0247 ,  H01M8/0258 ,  H01M8/1067

Abstract: An ionic conductivity measurement device of an electrolytic membrane includes a humidification chamber configured to accommodate an ion-conductive electrolytic membrane and having concave grooves respectively formed at both sides thereof which face the electrolytic membrane to form a measurement space for measuring ionic conductivity of the electrolytic membrane; a plurality of channels formed at a bottom surface of each of the concave grooves; a gas distribution unit detachably coupled to each of the concave grooves with the electrolytic membrane being interposed therebetween; and a plurality of electrodes provided in contact with one side of the electrolytic membrane and supported by the gas distribution unit, the plurality of electrodes being disposed side by side to measure an impedance of the electrolytic membrane.