首页|Electron-distribution control via Pt/NC and MoC/NC dual junction:Boosted hydrogen electro-oxidation and theoretical study

Electron-distribution control via Pt/NC and MoC/NC dual junction:Boosted hydrogen electro-oxidation and theoretical study

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
The scarcity,high cost and susceptibility to CO of Platinum severely restrict its application in alkaline hydrogen oxidation reaction(HOR).Hybridizing Pt with other transition metals provides an effective strategy to modulate its catalytic HOR performance,but at the cost of mass activity due to the coverage of modifiers on Pt surface.Herein,we constructed dual junctions'Pt/nitrogen-doped carbon(Pt/NC)andδ-MoC/NC to modify electronic structure of Pt via interfacial electron transfer to acquire Pt-MoC@NC cat-alyst with electron-deficient Pt nanoparticles,simultaneously endowing it with high mass activity and durability of alkaline HOR.Moreover,the unique structure of Pt-MoC@NC endows Pt with a high CO-tolerance at 1,000 ppm CO/H2,a quality that commercial Pt-C catalyst lacks.The theoretical calculations not only confirm the diffusion of electrons from Pt/NC to MoC/NC could occur,but also demonstrate the negative shift of Pt d-band center for the optimized binding energies of*H,*OH and CO.

Hydrogen oxidation reactionDual junctionsCO-tolerancePlatinum

Feng Zhou、Xiaofeng Ke、Yihuang Chen、Mei Zhao、Yun Yang、Youqing Dong、Chao Zou、Xi'an Chen、Huile Jin、Lijie Zhang、Shun Wang

展开 >

Key Laboratory of Carbon Materials of Zhejiang Province,College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325000,Zhejiang,China

Zhejiang Engineering Research Center for Electrochemical Energy Materials and Devices,Institute of New Materials & Industry Technology,Wenzhou University,Wenzhou 325000,Zhejiang,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaZhejiang Provincial Natural Science Foundation of ChinaZhejiang Provincial Special Support Program for Highlevel TalentsKey programs for Science and Technology Innovation of Wenzhou

520722725217114522109120LQ21B0300022019R52042ZG2022037

2024

10.1016/j.jechem.2023.09.032

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.88(1)
  • 71