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Atomic size mismatch induced consecutive compressive strain on intermetallic compound towards boosted hydrogen evolution
  • +5
  • Jiankun Li,
  • Zeyu Guan,
  • Haoran Wu,
  • Yixing Wang,
  • Linfeng Lei,
  • Minghui Zhu,
  • Linzhou Zhuang,
  • Zhi Xu
Jiankun Li
East China University of Science and Technology State Key Laboratory of Chemical Engineering
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Zeyu Guan
East China University of Science and Technology State Key Laboratory of Chemical Engineering
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Haoran Wu
East China University of Science and Technology State Key Laboratory of Chemical Engineering
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Yixing Wang
East China University of Science and Technology State Key Laboratory of Chemical Engineering
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Linfeng Lei
East China University of Science and Technology State Key Laboratory of Chemical Engineering
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Minghui Zhu
East China University of Science and Technology State Key Laboratory of Chemical Engineering
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Linzhou Zhuang
East China University of Science and Technology State Key Laboratory of Chemical Engineering

Corresponding Author:lzzhuang@ecust.edu.cn

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Zhi Xu
East China University of Science and Technology State Key Laboratory of Chemical Engineering
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Abstract

Modulating lattice strain in intermetallic compounds could effectively alter their electronic structure and binding energy, thus impacting catalytic activity. Strain is usually induced through lattice mismatch, achieved by constructing core-shell nanostructures or metal-substrate interfaces with complex reciprocity and distractors. However, in situ induced strain without interface-construction or lattice mismatch presents challenges. In this study, we precisely manipulate consecutive compressive strain from -0.5% to -0.8% in CoPt 3Pd intermetallic compound by inducing interior atomic radius mismatch. Precise strain control results in a negative shift of d-band center, dynamic charge distribution, and facilitates water dissociation, leading to the enhanced electrocatalytic activity. The CoPt 3Pd catalyst with -0.5% compressive strain exhibits exceptional hydrogen evolution activity, with an overpotential of 169 mV at 1 A cm -2. Our approach offers a straightforward method to manipulate compressive strain on intermetallic compound by atomic size mismatch, with broad implications for catalytic processes.
28 Apr 2024Submitted to AIChE Journal
28 Apr 2024Review(s) Completed, Editorial Evaluation Pending
28 Apr 2024Submission Checks Completed
28 Apr 2024Assigned to Editor
14 May 2024Editorial Decision: Revise Minor
28 May 20241st Revision Received
29 May 2024Submission Checks Completed
29 May 2024Assigned to Editor
09 Jun 2024Review(s) Completed, Editorial Evaluation Pending
16 Jun 2024Editorial Decision: Accept