公开(公告)号：US20160222488A1

公开(公告)日：2016-08-04

申请号：US14918486

申请日：2015-10-20

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sung Jong YOO ,  Jong Hyun JANG ,  Hyoung-Juhn KIM ,  Namgee JUNG ,  Suk Woo NAM ,  Jonghee HAN ,  Sung Pil YOON ,  Jaeyune RYU ,  Tae Hoon LIM ,  Jin Young KIM

IPC: C22C5/04

CPC classification number: C22C5/04

Abstract: Provided is a catalyst for oxygen reduction reaction comprising an alloy comprising at least one selected from Pt, Pd and Ir supported on a carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM). The catalyst for oxygen reduction reaction has electronic ensemble effects by virtue of the carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM), and thus shows improved oxygen reduction activity and durability as compared to conventional catalysts supported on carbon.

Abstract translation: 提供了一种氧还原反应的催化剂，其包含合金，其包含负载在用聚（N-异丙基丙烯酰胺）（PNIPAM）官能化的碳载体上的Pt，Pd和Ir中的至少一种。 用于氧还原反应的催化剂由于通过聚（N-异丙基丙烯酰胺）（PNIPAM）官能化的碳载体而具有电子集合效应，因此与负载在碳上的常规催化剂相比显示出改善的氧还原活性和耐久性。

公开(公告)号：US20180254490A1

公开(公告)日：2018-09-06

申请号：US15910304

申请日：2018-03-02

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sung Jong YOO ,  Jue-hyuk JANG ,  So Young LEE ,  Jin Young KIM ,  Jong Hyun JANG ,  Hyoung-Juhn KIM ,  Namgee JUNG ,  Hyun Seo PARK

IPC: H01M4/90 ,  H01M4/88

CPC classification number: H01M4/9041 ,  B01J21/18 ,  B01J23/75 ,  H01M4/88 ,  H01M4/9083 ,  H01M2008/1095

Abstract: A catalyst containing a carbon support and a core-shell nanoparticle supported on the carbon support, wherein a core of the core-shell nanoparticle is cobalt metal not containing a heterogeneous element and the shell contains carbon. The catalyst for an oxygen reduction reaction of the present disclosure is a catalyst in which the cobalt core-carbon shell nanoparticle is supported on the carbon support through ligand stabilization and heat treatment. The catalyst can be synthesized to have high dispersibility. In particular, it can be used as an electrode catalyst of a cathode to improve the oxygen reduction activity and durability of a fuel cell operating under an alkaline atmosphere.

公开(公告)号：US20140221192A1

公开(公告)日：2014-08-07

申请号：US14171906

申请日：2014-02-04

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sung Jong YOO ,  Hee-young PARK ,  Jong Hyun JANG ,  Hyoung-Juhn KIM ,  Tae-Hoon LIM ,  Sang Young LEE ,  Sang Hyun AHN ,  Namgee JUNG ,  Suk Woo NAM ,  Eun Ae CHO

IPC: H01M4/88 ,  H01M4/90

CPC classification number: H01M4/9083 ,  H01M4/9041 ,  H01M4/921 ,  H01M4/926 ,  Y02E60/50

Abstract: The present disclosure relates to a method and an apparatus for preparing nanosized metal or alloy nanoparticles by depositing metal or alloy nanoparticles with superior size uniformity on the surface of a powder as a base material by vacuum deposition and then dissolving or melting the base material using a solvent or heat. The method solves the problems of the existing expensive multi-step synthesis method based on chemical reduction and allows effective synthesis of metal or alloy nanoparticles with very uniform size and metal or alloy catalyst nanoparticles supported on carbon at low cost.

Abstract translation: 本公开内容涉及一种通过在真空沉积作为基材的粉末表面上沉积具有优异尺寸均匀性的金属或合金纳米颗粒来制备纳米尺寸金属或合金纳米颗粒的方法和装置，然后使用 溶剂或热量。 该方法解决了基于化学还原的现有昂贵的多步合成方法的问题，并且能够有效合成具有非常均匀尺寸的金属或合金纳米颗粒，并以低成本负载在碳上的金属或合金催化剂纳米颗粒。