公开(公告)号：US11524280B2

公开(公告)日：2022-12-13

申请号：US16726836

申请日：2019-12-25

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Shijun Liao ,  Xinlong Tian ,  Junming Luo ,  Rong Chen

IPC: B01J27/24 ,  H01M4/88 ,  B01J23/42 ,  B01J37/00 ,  B01J37/34 ,  H01M4/92 ,  B82Y30/00 ,  B82Y40/00

Abstract: The present invention discloses a low-platinum catalyst based on nitride nanoparticles and a preparation method thereof. A component of an active metal of the catalyst directly clades on a surface of nitride particles or a surface of nitride particles loaded on a carbon support in an ultrathin atomic layer form. Preparation steps including: preparing a transition-metal ammonia complex first, nitriding the obtained ammonia complex solid under an atmosphere of ammonia gas to obtain nitride nanoparticles; loading the nitride nanoparticles on a surface of a working electrode, depositing an active component on a surface of the nitride nanoparticles by pulsed deposition, to obtain the low platinum loading catalyst using a nitride as a substrate. The catalyst may be used as an anode or a cathode catalyst of a low temperature fuel cell, has very high catalytic activity and stability, can greatly reduce a usage amount of a precious metal in the fuel cell, and greatly reduces a cost of the fuel cell. The present invention has important characteristics of being controllable in deposition amount, simple and convenient to operate, free of protection of inert atmosphere, and etc., and is suitable for large-scale industrial production.

公开(公告)号：US10549266B2

公开(公告)日：2020-02-04

申请号：US15739755

申请日：2015-12-30

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Shijun Liao ,  Xinlong Tian ,  Junming Luo ,  Rong Chen

IPC: B01J27/24 ,  B01J23/42 ,  B01J37/00 ,  B01J37/34 ,  H01M4/92 ,  B82Y30/00 ,  B82Y40/00

Abstract: A low-platinum catalyst based on nitride nanoparticles and a preparation method thereof. A component of an active metal of the catalyst directly clades on a surface of nitride particles or a surface of nitride particles loaded on a carbon support in an ultrathin atomic layer form. Preparation steps including: preparing a transition-metal ammonia complex first, nitriding the obtained ammonia complex solid under an atmosphere of ammonia gas to obtain nitride nanoparticles; loading the nitride nanoparticles on a surface of a working electrode, depositing an active component on a surface of the nitride nanoparticles by pulsed deposition, to obtain the low platinum loading catalyst using a nitride as a substrate. The catalyst may be used as an anode or a cathode catalyst of a low temperature fuel cell.