公开(公告)号：US10720649B2

公开(公告)日：2020-07-21

申请号：US16495635

申请日：2018-03-22

Applicant: SHOWA DENKO K.K.

Inventor： Takuya Imai ,  Kazuo Furuya ,  Kunchan Lee

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

Abstract: Provided are an oxygen reduction catalyst having a high electrode potential under a fuel cell operating environment, an electrode containing the oxygen reduction catalyst, a membrane electrode assembly in which a cathode is the electrode, and a fuel cell including the membrane electrode assembly. The oxygen reduction catalyst used here contains cobalt, sulfur, and oxygen as elements, has a CoS hexagonal structure in powder X-ray diffractometry, and having an S—Co/S—O peak area ratio of 2.1 to 8.9 in an S2p spectrum in X-ray photoelectron spectroscopic analysis.

公开(公告)号：US20150093681A1

公开(公告)日：2015-04-02

申请号：US14390520

申请日：2013-03-27

Applicant: SHOWA DENKO K.K.

Inventor： Ryuji Monden ,  Takuya Imai ,  Yuji Ito ,  Kunchan Lee ,  Takashi Sato

IPC: H01M4/90 ,  H01M4/88

CPC classification number: H01M4/9016 ,  H01M4/88 ,  H01M4/9008 ,  H01M2008/1095 ,  H01M2300/0082

Abstract: An object of the present invention is to provide a fuel cell electrode catalyst with which high durability and a high maximum output density are obtained even when a fuel cell is continuously operated for long time; a method for producing the fuel cell electrode catalyst; a fuel cell in which the catalyst is used; and the like. A method for producing a fuel cell electrode catalyst is provided, the method including: a step of preparing a catalyst precursor comprising each atom of a metal element, carbon, nitrogen, and oxygen, and comprising copper as the metal element; and a contact step of bringing the catalyst precursor and an acid solution into contact with each other to obtain a catalyst.

Abstract translation: 本发明的目的在于提供即使燃料电池长时间连续运转也能获得高耐久性和高最大输出密度的燃料电池用电极催化剂， 燃料电池用电极催化剂的制造方法， 使用催化剂的燃料电池; 等等。 提供一种制造燃料电池用电极催化剂的方法，该方法包括：制备包含金属元素，碳，氮和氧的每个原子，并且包含铜作为金属元素的催化剂前体的步骤; 以及使催化剂前体和酸性溶液相互接触以获得催化剂的接触步骤。