Characterization of the porous Ni3Al-Mo electrodes during hydrogen generation from alkaline water electrolysis

Wu, Liang, He, Yuehui, Lei,Ting Lei, Nan, Bo, Xu, Nanping, Zou, Jin, Huang, Baiyun and Liu, C. T. (2013) Characterization of the porous Ni3Al-Mo electrodes during hydrogen generation from alkaline water electrolysis. Energy, 63 216-224. doi:10.1016/j.energy.2013.10.029


Author Wu, Liang
He, Yuehui
Lei,Ting Lei
Nan, Bo
Xu, Nanping
Zou, Jin
Huang, Baiyun
Liu, C. T.
Title Characterization of the porous Ni3Al-Mo electrodes during hydrogen generation from alkaline water electrolysis
Formatted title
Characterization of the porous Ni3Al–Mo electrodes during hydrogen generation from alkaline water electrolysis
Journal name Energy   Check publisher's open access policy
ISSN 0360-5442
Publication date 2013-12-15
Sub-type Article (original research)
DOI 10.1016/j.energy.2013.10.029
Volume 63
Start page 216
End page 224
Total pages 9
Place of publication London, United Kingdom
Publisher Elsevier Ltd
Collection year 2014
Language eng
Subject 2100 Energy
2310 Pollution
Abstract Objective of this work is to investigate the electrocatalytic efficiency using cyclic voltammetry, cathodic polarization and impedance spectroscopy techniques of the porous Ni3Al-Mo electrodes obtained by reactive synthesis of Ni, Al and Mo elemental powders. The kinetic parameters are determined from electrochemical steady-state polarization and electrochemical impedance spectroscopy technology in 6M KOH. The Tafel slopes are around 0.13Vdec-1, and exchange current densities are close to 0.02mAcm-2. Moreover, the porous Ni3Al-Mo electrodes possess high stability during prolonged electrolysis. Results are presented to show Tafel slopes, exchange current densities, apparent energy of activation and stability of the catalysts. Results suggest the significant catalytic performance not only from the increase of the real surface area of electrodes, but also from the true catalytic effect.
Keyword Electrochemical
Hydrogen evolution reaction
Impedance spectroscopy
Porous Ni3Al-Mo electrodes
Powder metallurgy
Reactive synthesis
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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