skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

This content will become publicly available on January 7, 2021

Title: NbO x nano-nail with a Pt head embedded in carbon as a highly active and durable oxygen reduction catalyst

Abstract

Further enhancing activity and durability of Pt-based catalysts for oxygen reduction is needed for the automotive application of fuel cells. This is however a very challenging task. Herein, we describe a new method to nail down low-oxidation-state NbO x nanoparticles at high temperature without overgrowth using the surface pores on carbon and then deposit Pt head selectively on top of NbO x derived by the redox reduction between themselves. This new structured catalyst, Pt-NbO xC, exhibited mass activities higher than 0.5 A mg –1 after 50,000 cycles between 0.6 and 1.0 V and 5,000 cycles between 1 and 1.5 V, which are 7 and 4 times of the 0.07 and 0.13 A mg –1, respectively, on Pt/C. That high sustainable ORR activity is ascribed to strong metal-support interaction that maximizes Pt utilization and minimizes particle agglomeration, carbon corrosion and metal oxidation. As a result, the method embedded nanoparticles into carbon pores will likely be used in developing small particles with uniform dispersion for various applications.

Authors:
ORCiD logo [1];  [2];  [2];  [2]; ORCiD logo [1];  [2];  [2];  [2];  [2]; ORCiD logo [2];  [1]
  1. Univ. of Waterloo, ON (Canada)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1582567
Report Number(s):
BNL-213510-2020-JAAM
Journal ID: ISSN 2211-2855
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Nano Energy
Additional Journal Information:
Journal Volume: 69; Journal Issue: C; Journal ID: ISSN 2211-2855
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; Oxygen reduction reaction; fuel cells; Pt; NbOx; Strong metal-support interaction; Surface pore; Selectively deposition

Citation Formats

Ma, Zhong, Li, Shuang, Wu, Lijun, Song, Liang, Jiang, Gaopeng, Liang, Zhixiu, Su, Dong, Zhu, Yimei, Adzic, Radoslav R., Wang, Jia X., and Chen, Zhongwei. NbOx nano-nail with a Pt head embedded in carbon as a highly active and durable oxygen reduction catalyst. United States: N. p., 2020. Web. doi:10.1016/j.nanoen.2020.104455.
Ma, Zhong, Li, Shuang, Wu, Lijun, Song, Liang, Jiang, Gaopeng, Liang, Zhixiu, Su, Dong, Zhu, Yimei, Adzic, Radoslav R., Wang, Jia X., & Chen, Zhongwei. NbOx nano-nail with a Pt head embedded in carbon as a highly active and durable oxygen reduction catalyst. United States. doi:10.1016/j.nanoen.2020.104455.
Ma, Zhong, Li, Shuang, Wu, Lijun, Song, Liang, Jiang, Gaopeng, Liang, Zhixiu, Su, Dong, Zhu, Yimei, Adzic, Radoslav R., Wang, Jia X., and Chen, Zhongwei. Tue . "NbOx nano-nail with a Pt head embedded in carbon as a highly active and durable oxygen reduction catalyst". United States. doi:10.1016/j.nanoen.2020.104455.
@article{osti_1582567,
title = {NbOx nano-nail with a Pt head embedded in carbon as a highly active and durable oxygen reduction catalyst},
author = {Ma, Zhong and Li, Shuang and Wu, Lijun and Song, Liang and Jiang, Gaopeng and Liang, Zhixiu and Su, Dong and Zhu, Yimei and Adzic, Radoslav R. and Wang, Jia X. and Chen, Zhongwei},
abstractNote = {Further enhancing activity and durability of Pt-based catalysts for oxygen reduction is needed for the automotive application of fuel cells. This is however a very challenging task. Herein, we describe a new method to nail down low-oxidation-state NbOx nanoparticles at high temperature without overgrowth using the surface pores on carbon and then deposit Pt head selectively on top of NbOx derived by the redox reduction between themselves. This new structured catalyst, Pt-NbOxC, exhibited mass activities higher than 0.5 A mg–1 after 50,000 cycles between 0.6 and 1.0 V and 5,000 cycles between 1 and 1.5 V, which are 7 and 4 times of the 0.07 and 0.13 A mg–1, respectively, on Pt/C. That high sustainable ORR activity is ascribed to strong metal-support interaction that maximizes Pt utilization and minimizes particle agglomeration, carbon corrosion and metal oxidation. As a result, the method embedded nanoparticles into carbon pores will likely be used in developing small particles with uniform dispersion for various applications.},
doi = {10.1016/j.nanoen.2020.104455},
journal = {Nano Energy},
number = C,
volume = 69,
place = {United States},
year = {2020},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on January 7, 2021
Publisher's Version of Record

Save / Share: