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Fundamentals of Water Electrolysis
2020Renewable and clean energy has attracted wide attention owing to the increasing demand for energy and environment. Water electrolysis technologies for hydrogen production are a kind of alternative clean energy and also integrated with renewable energy sources such as solar, wind, etc.
Xiaoxia Yan +4 more
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Advanced alkaline water electrolysis
Electrochimica Acta, 2012A short review on the fundamental and technological issues relevant to water electrolysis in alkaline and proton exchange membrane (PEM) devices is given. Due to price and limited availability of the platinum group metal (PGM) catalysts they currently employ, PEM electrolyzers have scant possibilities of being employed in large-scale hydrogen ...
MARINI, STEFANIA +7 more
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Pyrite-assisted water electrolysis
International Journal of Hydrogen Energy, 1985Abstract Anodic oxidation of acidic pyrite slurries stirred on platinum electrodes was studied at applied potentials of 0.5–1.0 V, SCE (standard calomel electrode). Hydrogen evolution with Faraday current efficiencies of over 95% was observed at the cathode at potentials as low as 0.6 V, SCE.
S LALVANI, M SHAMI
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Water electrolysis under microgravity
Electrochimica Acta, 2006Abstract Water electrolysis is carried out in both alkaline (25 and 2 wt.% KOH) and acidic (0.1N H 2 SO 4 ) solutions for 8 s under a microgravity (μ-G) environment realized in a drop shaft. The effects of gravitational strength on gas bubble evolution behavior are analyzed in consideration of various factors (bubble movement, bubble assembly and ...
H. Matsushima +2 more
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Gas Evolution in Water Electrolysis
Chemical ReviewsGas bubbles generated by the hydrogen evolution reaction and oxygen evolution reaction during water electrolysis influence the energy conversion efficiency of hydrogen production. Here, we survey what is known about the interaction of gas bubbles and electrode surfaces and the influence of gas evolution on practicable devices used for water ...
Paul A. Kempler +2 more
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Lignin‐Augmented Water Electrolysis
Journal of The Electrochemical Society, 1992Hydrogen production from lignin dissolved in 1 M NaOH was observed at high faradaic efficiencies for experiments conducted at constant electrode potentials using Pt mesh electrodes. The rates of reaction were found to increase with temperature and applied electrode potential. An activation energy of 7.6 Kcal/mol for the process is estimated.
S. B. Lalvani, P. Rajagopal
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Polymer-electrolyte water electrolysis
Applied Energy, 1998Abstract The electricity for the electrolyzer is supplied by a variable electricity supply unit that simulates actual outputs of both series and parallel combinations of solar cells exposed to various solar intensities. An amorphous-silicon solar cell is used as a sensor for the unit The operation was continued for more than 600 days without trouble.
Moritaka Kato +3 more
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Electrocatalysis in Water Electrolysis
ECS Meeting Abstracts, 2015In a recent publication, generation of active surface sites by the overpotential was described as a common pattern in fuel cell electrocatalytic processes [1]. This paper discusses the applicability of the same pattern to the electrocatalytic processes in the water electrolyzer .
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