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Title: Tuning the electrocatalytic activity of Pt by structurally ordered PdFe/C for the hydrogen oxidation reaction in alkaline media

Journal Article · · Journal of Materials Chemistry. A
DOI:https://doi.org/10.1039/C8TA03250E· OSTI ID:1464106
 [1];  [1];  [2]; ORCiD logo [3];  [1];  [4];  [4];  [1]; ORCiD logo [2];  [5];  [4];  [2]; ORCiD logo [1]
  1. Huazhong Univ. of Science and Technology, Wuhan (China). Key Lab. of Material Chemistry for Energy Conversion and Storage, Hubei Key Lab. of Material Chemistry and Service Failure and School of Chemistry and Chemical Engineering
  2. Hong Kong Polytechnic Univ., Hong Kong (China). Dept. of Applied Physics
  3. Huazhong Univ. of Science and Technology, Wuhan (China). School of Physics
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
  5. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)

Tuning the hydrogen adsorption energy (EH) by controlling the surface electronic structure of Pt is essential for enhancing the hydrogen oxidation reaction (HOR) performance in alkaline media. This could be achieved by forming a Pt skin on PdFe/C nanoparticles with structurally ordered intermetallic (O-PdFe@Pt/C) or disordered alloy (D-PdFe@Pt/C). The HOR activity on O-PdFe@Pt/C exhibits an exchange current density of 1.49 A mgPt-1, which is 3.87 and 7.56 times higher than that on D-PdFe@Pt/C (0.385 A mgPt-1) and Pt/C (0.197 A mgPt-1), respectively. The excellent electrocatalytic HOR performance on O-PdFe@Pt/C can be ascribed to the attenuation of EH on the Pt shell induced by the structurally ordered PdFe core, where the EH on O-PdFe@Pt surface is 0.18 eV smaller than that on Pt according to DFT calculations.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; National Natural Science Foundation of China (NSFC); 1000 Talents Program (China)
Grant/Contract Number:
SC0012704; 21573083; 2017KFYXJJ164; 25301617; 1-ZE6G; AC02-98CH10886
OSTI ID:
1464106
Report Number(s):
BNL-207956-2018-JAAM; JMCAET
Journal Information:
Journal of Materials Chemistry. A, Vol. 6, Issue 24; ISSN 2050-7488
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 33 works
Citation information provided by
Web of Science

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Cited By (3)

Bimetallic Pd 96 Fe 4 nanodendrites embedded in graphitic carbon nanosheets as highly efficient anode electrocatalysts journal January 2019
Facile synthesis of PdFe alloy tetrahedrons for boosting electrocatalytic properties towards formic acid oxidation journal January 2019
Tuning the electronic structure of PtRu bimetallic nanoparticles for promoting the hydrogen oxidation reaction in alkaline media journal January 2019

Figures / Tables (4)