articleAdvanced Energy MaterialsApr 27, 2017Closed access

Enhanced Electrocatalysis for Energy‐Efficient Hydrogen Production over CoP Catalyst with Nonelectroactive Zn as a Promoter

TLTingting LiuDLDanni LiuFQFengli QuDWDengxing WangLZLing Zhang

Sichuan University · Qufu Normal University · +5 more institutions

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Abstract

As a non‐toxic species, Zn fulfills a multitude of biological roles, but its promoting effect on electrocatalysis has been rarely explored. Herein, the theoretic predications and experimental investigations that nonelectroactive Zn behaves as an effective promoter for CoP‐catalyzed hydrogen evolution reaction (HER) in both acidic and alkaline media is reported. Density function theory calculations reveal that Zn doing leads to more thermal‐neutral hydrogen adsorption free energy and thus enhanced HER activity for CoP catalyst. Electrochemical tests show that a Zn 0.08 Co 0.92 P nanowall array on titanium mesh (Zn 0.08 Co 0.92 P/TM) needs overpotentials of only 39 and 67 mV to drive a geometrical catalytic…

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Topics & keywords

Topics
Keywords
  • Electrocatalyst
  • Catalysis
  • Electrochemistry
  • Bifunctional
  • Materials science
  • Hydrogen production
  • Electrolysis
  • Oxygen evolution
UN Sustainable Development Goals
  • Affordable and clean energy
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