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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8859458 B1

PDFFull Text
Date of Patent:
Oct. 14, 2014

Filed:

Sep. 21, 2011

Methods of preparing electrocatalysts for fuel cells in core-shell structure and electrocatalysts

Applicants:

Seung Jun Hwang, Seoul, KR;

Sung Jong Yoo, Incheon, KR;

Soo Kil Kim, Seoul, KR;

Eun AE Cho, Seoul, KR;

Jong Hyun Jang, Gyeonggi-Do, KR;

Hyoung Juhn Kim, Gyeonggi-Do, KR;

Suk Woo Nam, Seoul, KR;

Tae Hoon Lim, Seoul, KR;

Inventors:

Seung Jun Hwang, Seoul, KR;

Sung Jong Yoo, Incheon, KR;

Soo Kil Kim, Seoul, KR;

Eun Ae Cho, Seoul, KR;

Jong Hyun Jang, Gyeonggi-Do, KR;

Hyoung Juhn Kim, Gyeonggi-Do, KR;

Suk Woo Nam, Seoul, KR;

Tae Hoon Lim, Seoul, KR;

Assignee:

Korea Institute of Science and Technology, Seoul, KR;

Attorney:

Ladas & Parry LLP

Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
B01J 21/00 (2006.01); B01J 21/04 (2006.01); B01J 21/18 (2006.01); B01J 23/00 (2006.01); B01J 23/02 (2006.01); B01J 23/04 (2006.01); B01J 23/40 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/56 (2006.01); B01J 23/58 (2006.01); B01J 23/70 (2006.01); B01J 23/72 (2006.01); B01J 23/74 (2006.01); H01M 4/02 (2006.01); H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 4/92 (2006.01); H01M 4/94 (2006.01); H01M 8/10 (2006.01); B82Y 40/00 (2011.01); B82Y 30/00 (2011.01); H01M 4/86 (2006.01);
U.S. Cl.
CPC ...
B82Y 30/00 (2013.01); Y02E 60/50 (2013.01); B82Y 40/00 (2013.01); H01M 4/925 (2013.01); H01M 4/8657 (2013.01); Y10S 977/773 (2013.01); Y10S 977/775 (2013.01); Y10S 977/81 (2013.01);
Abstract

Provided are a method of preparing an electrocatalyst for fuel cells in a core-shell structure, an electrocatalyst for fuel cells having a core-shell structure, and a fuel cell including the electrocatalyst for fuel cells. The method may be useful in forming a core and a shell layer without performing a subsequent process such as chemical treatment or heat treatment and forming a core support in which core particles having a nanosize diameter are homogeneously supported, followed by selectively forming shell layers on surfaces of the core particles in the support. Also, the electrocatalyst for fuel cells has a high catalyst-supporting amount and excellent catalyst activity and electrochemical property.

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