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  Polyvinylpyrrolidone-Coordinated Single-Site Platinum Catalyst Exhibits High Activity for Hydrogen Evolution Reaction

Li, C., Chen, Z., Yi, H., Cao, Y., Lei, D., Hu, Y., et al. (2020). Polyvinylpyrrolidone-Coordinated Single-Site Platinum Catalyst Exhibits High Activity for Hydrogen Evolution Reaction. Angewandte Chemie, 132(37), 16036-16041. doi:/10.1002/ange.202005282.

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 Creators:
Li, Can1, 2, Author              
Chen, Zheng3, Author
Yi, Hong4, Author
Cao, Yi1, Author
Lei, Du1, Author
Hu, Yidong5, Author
Kong, Fanpeng1, Author
Campen, R. Kramer2, 6, Author              
Gao, Yunzhi1, Author
Du, Chunyu1, Author
Yin, Geping1, Author
Zhang, Igor Ying3, Author
Tong, Yujin2, 6, Author              
Affiliations:
1MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China, ou_persistent22              
2Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
3Shanghai Key Laboratory of Molecular Catalysis and InnovativeMaterials, Collaborative Innovation Center of Chemistry for EnergyMaterialsMOE Laboratory for Computational Physical ScienceDepartment of Chemistry, Fudan University, 200433 Shanghai (China), ou_persistent22              
4College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 (China), ou_persistent22              
5Department of Chemistry, Hefei National Laboratory for PhysicalSciences at the Microscale, iChEM (Collaborative Innovation Centerof Chemistry for Energy Materials)University of Science and Technology of China, Hefei 230026 (China), ou_persistent22              
6Faculty of Physics, University of Duisburg-EssenLotharstraße 1, 47057 Duisburg (Germany), ou_persistent22              

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 Abstract: The essence of developing a Pt‐based single‐atom catalyst (SAC) for hydrogen evolution reaction (HER) is the preparation of well‐defined and stable single Pt sites with desired electrocatalytic efficacy. Herein, we report a facile approach to generate uniformly dispersed Pt sites with outstanding HER performance via a photochemical reduction method using polyvinylpyrrolidone (PVP) molecules as the key additive to significantly simplify the synthesis and enhance the catalytic performance. The as‐prepared catalyst displays remarkable kinetic activities (20 times higher current density than the commercially available Pt/C) with excellent stability (76.3 % of its initial activity after 5000 cycles) for HER. EXAFS measurements and DFT calculations demonstrate a synergetic effect, where the PVP ligands and the support together modulate the electronic structure of the Pt atoms, which optimize the hydrogen adsorption energy, resulting in a considerably improved HER activity.

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Language(s): eng - English
 Dates: 2020-04-112020-05-202020-06-292020-09-07
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: /10.1002/ange.202005282
 Degree: -

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Title: Angewandte Chemie
  Abbreviation : Angew. Chem.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: 6 Volume / Issue: 132 (37) Sequence Number: - Start / End Page: 16036 - 16041 Identifier: ISSN: 0044-8249
CoNE: https://pure.mpg.de/cone/journals/resource/954926979058_1