TY - JOUR
T1 - Implanting oxophilic metal in PtRu nanowires for hydrogen oxidation catalysis
AU - Huang, Zhongliang
AU - Hu, Shengnan
AU - Sun, Mingzi
AU - Xu, Yong
AU - Liu, Shangheng
AU - Ren, Renjie
AU - Zhuang, Lin
AU - Chan, Ting Shan
AU - Hu, Zhiwei
AU - Ding, Tianyi
AU - Zhou, Jing
AU - Liu, Liangbin
AU - Wang, Mingmin
AU - Huang, Yu Cheng
AU - Tian, Na
AU - Bu, Lingzheng
AU - Huang, Bolong
AU - Huang, Xiaoqing
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/2/6
Y1 - 2024/2/6
N2 - Bimetallic PtRu are promising electrocatalysts for hydrogen oxidation reaction in anion exchange membrane fuel cell, where the activity and stability are still unsatisfying. Here, PtRu nanowires were implanted with a series of oxophilic metal atoms (named as i-M-PR), significantly enhancing alkaline hydrogen oxidation reaction (HOR) activity and stability. With the dual doping of In and Zn atoms, the i-ZnIn-PR/C shows mass activity of 10.2 A mgPt+Ru−1 at 50 mV, largely surpassing that of commercial Pt/C (0.27 A mgPt−1) and PtRu/C (1.24 A mgPt+Ru−1). More importantly, the peak power density and specific power density are as high as 1.84 W cm−2 and 18.4 W mgPt+Ru−1 with a low loading (0.1 mg cm−2) anion exchange membrane fuel cell. Advanced experimental characterizations and theoretical calculations collectively suggest that dual doping with In and Zn atoms optimizes the binding strengths of intermediates and promotes CO oxidation, enhancing the HOR performances. This work deepens the understanding of developing novel alloy catalysts, which will attract immediate interest in materials, chemistry, energy and beyond.
AB - Bimetallic PtRu are promising electrocatalysts for hydrogen oxidation reaction in anion exchange membrane fuel cell, where the activity and stability are still unsatisfying. Here, PtRu nanowires were implanted with a series of oxophilic metal atoms (named as i-M-PR), significantly enhancing alkaline hydrogen oxidation reaction (HOR) activity and stability. With the dual doping of In and Zn atoms, the i-ZnIn-PR/C shows mass activity of 10.2 A mgPt+Ru−1 at 50 mV, largely surpassing that of commercial Pt/C (0.27 A mgPt−1) and PtRu/C (1.24 A mgPt+Ru−1). More importantly, the peak power density and specific power density are as high as 1.84 W cm−2 and 18.4 W mgPt+Ru−1 with a low loading (0.1 mg cm−2) anion exchange membrane fuel cell. Advanced experimental characterizations and theoretical calculations collectively suggest that dual doping with In and Zn atoms optimizes the binding strengths of intermediates and promotes CO oxidation, enhancing the HOR performances. This work deepens the understanding of developing novel alloy catalysts, which will attract immediate interest in materials, chemistry, energy and beyond.
UR - http://www.scopus.com/inward/record.url?scp=85184403759&partnerID=8YFLogxK
U2 - 10.1038/s41467-024-45369-x
DO - 10.1038/s41467-024-45369-x
M3 - Journal article
C2 - 38321034
AN - SCOPUS:85184403759
SN - 2041-1723
VL - 15
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 1097
ER -