Preparation of Porous Ni-W Alloys Electrodeposited by Dynamic Hydrogen Bubble Template and Their Alkaline HER Properties
Source abstract
Abstract
Nickel–tungsten (Ni-W) alloys are gaining significant attention due to their superior hardness, wear resistance, anti-corrosion and electrochemical hydrogen evolution reaction (HER) activity. In this work, porous and crack Ni-W alloys with different W contents were prepared in a pyrophosphate bath. The key to forming a porous structure is a very high current density over 300 mA cm−2. The HER activity of porous and crack Ni-W alloys was studied by means of electrochemical technologies of linear sweep voltammetry (LSV), Tafel curves (Taf) and electrochemical impedance spectroscopy (EIS). Compared with the crack Ni-W alloy, the porous Ni-W alloy exhibits improved alkaline electrochemical HER performances, which can deliver a current density of 10 mA cm−2 at 166 mV (η10) vs. RHE (reversible hydrogen electrode).
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Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Electrodeposition and Electroless Coatings
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
PetroChina Southwest Oil and Gasfield Company, Chengdu 610017, China
College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
Chengdu Davied Petroleum Technology Service Co., Ltd., Chengdu 610213, China
Funding
Provincial Natural Science Foundations of Hunan · Doctoral Research Fund of Hunan Institute of Engineering
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