公开(公告)号：US20180345265A1

公开(公告)日：2018-12-06

申请号：US16000494

申请日：2018-06-05

Applicant: Brookhaven Science Associates, LLC

Inventor： Jia Xu Wang ,  Radoslav R. Adzic ,  Zhong Ma ,  Zhongwei Chen ,  Liang Song

IPC: B01J35/00 ,  B01J35/02 ,  B01J35/10 ,  B01J37/02 ,  B01J37/04 ,  B01J37/18 ,  B01J37/34 ,  B01J21/18 ,  B01J23/20 ,  B01J23/42

Abstract: The present particles, compositions and methods are Nb-oxide embedded carbon based electrocatalysts. In one embodiment, a carbon based support particle is provided having NbOx (0 ≤x≤2 is average value of amorphous low-oxidation-state niobium oxides) and a catalytically active metal deposited thereupon. In one embodiment, a method is provided of embedding niobium oxides into pores of carbon black, which involves filling about 4 nm pores on Ketjenblack EC 600JD (KB) with Nb(V) ethoxide by sonication, and decomposing/reducing dried Nb(V) precursor in carbon to ≤5 nm particles of NbOx. The embedded, small metal or metal oxide particles over porous carbon surface may find applications in fuel cell and battery technologies. The present compositions can be used for fabricating active and durable catalysts for oxygen reduction reaction (ORR).