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Title: One-Nanometer-Thick Pt3Ni Bimetallic Alloy Nanowires Advanced Oxygen Reduction Reaction: Integrating Multiple Advantages into One Catalyst

Journal Article · · ACS Catalysis
 [1];  [2];  [3];  [4];  [2];  [2];  [2];  [2]; ORCiD logo [4];  [4]; ORCiD logo [3];  [5]; ORCiD logo [2]
  1. Huazhong Univ. of Science and Technology, Wuhan (People's Republic of China); Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Huazhong Univ. of Science and Technology, Wuhan (People's Republic of China)
  3. State Univ. of New York, Binghamton, NY (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
  5. Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. of California, Irvine, CA (United States)

Developing highly active as well as durable oxygen reduction reaction (ORR) electrocatalysts are still imperative for clean and efficient energy conversion device, such as fuel cells and metal-air battery. For this purpose and maximize the utilization of noble Pt, we present here a facile, yet scalable strategy for the high-precise synthesis of 1-nm-thick Pt3Ni bimetallic alloy nanowires (Pt3Ni BANWs). The seed-mediated growth mechanism of Pt3Ni BANWs was identified subsequently. As expected, the Pt3Ni BANWs delivered enhanced mass activity (0.546 A mgPt–1, exceeding the 2020 target of DOE) in comparison to Pt nanowires assembly (Pt NWA, 0.098 A mgPt–1) and Pt/C (Pt, 0.135 A mgPt–1), because of the rational integration of multiple compositional and structural advantages. Moreover, the Pt3Ni BANWs displayed enhanced durability (37% MA retention) than Pt NWA and Pt after 50 000 potential cycles. All these results indicate that the ultrathin Pt3Ni BANWs are potential candidates for catalyzing ORR with acceptable activity and durability. In conclusion, the present work could not only provide a facile strategy but also a general guidance for the design of superb performance Pt-based nanowire catalysts for ORR.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
SC0012704
OSTI ID:
1557715
Report Number(s):
BNL-211955-2019-JAAM
Journal Information:
ACS Catalysis, Vol. 9, Issue 5; ISSN 2155-5435
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 99 works
Citation information provided by
Web of Science

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Cited By (2)

Highly stable one-dimensional Pt nanowires with modulated structural disorder towards the oxygen reduction reaction journal January 2019
Platinum Alloy Catalysts for Oxygen Reduction Reaction: Advances, Challenges and Perspectives journal August 2019