Results 31 to 40 of about 441,985 (347)

Coffee waste-derived porous carbon for hydrogen and oxygen evolution reaction

open access: yesChemical Physics Impact, 2023
Porous carbon was synthesized from coffee waste for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The coffee waste was carbonized at 600 °C for 2 hrs and activated at 500, 600, and 700 °C, respectively. The activated coffee waste
Keshab Pandey, Hae Kyung Jeong
doaj   +1 more source

Directed Growth of Hydrogen Lines on Graphene: High Throughput Simulations Powered by Evolutionary Algorithm [PDF]

open access: yes, 2018
We set up an evolutionary algorithm combined with density functional tight-binding (DFTB) calculations to investigate hydrogen adsorption on flat graphene and graphene monolayers curved over substrate steps.
Brandbyge, M.   +4 more
core   +2 more sources

Electrochemical deprotonation of phosphate on stainless steel [PDF]

open access: yes, 2004
Voltammetric experiments performed in phosphate buffer at constant pH 8.0 on platinum and stainless steel revealed clear reduction currents, which were correlated to the concentrations of phosphate.
A. Bergel   +24 more
core   +1 more source

Ruthenium atomically dispersed in carbon outperforms platinum toward hydrogen evolution in alkaline media. [PDF]

open access: yes, 2019
Hydrogen evolution reaction is an important process in electrochemical energy technologies. Herein, ruthenium and nitrogen codoped carbon nanowires are prepared as effective hydrogen evolution catalysts.
Chen, Shaowei   +13 more
core   +3 more sources

Carbon-based electrocatalysts for hydrogen evolution reaction

open access: yesEnergy Conversion and Management: X
In the pursuit of clean and sustainable hydrogen energy production, water splitting has emerged as a promising method. However, the cost and scarcity of Pt-group metals as effective electrocatalysts hydrogen evolution reaction (HER) poses challenges for ...
Khalid Ahmed   +4 more
doaj   +1 more source

A Perspective on Low-Temperature Water Electrolysis – Challenges in Alkaline and Acidic Technology

open access: yesInternational Journal of Electrochemical Science, 2018
Water electrolysis is considered as an important technology for an increased renewable energy penetration. This perspective on low-temperature water electrolysis joins the dots between the interdisciplinary fields of fundamental science describing ...
Maximilian Schalenbach   +4 more
doaj   +1 more source

Electrolytic preparation and characterization of Ni-Fe-Mo alloys: Cathode materials for alkaline water electrolysis [PDF]

open access: yes, 1999
Ni-Fe-Mo alloys have been electroplated by using suitable bath solution and plating conditions. SEM and XRD analysis showed that the deposited alloys are partially amorphous. Polarization studies indicated a dependence of the hydrogen evolution mechanism
Mayanna, S.M   +2 more
core   +1 more source

Mechanisms of hydrogen evolution on chromium [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2015
In this work, the mechanisms of hydrogen evolution on the metal chromium in a solution of 0.1 M Na2SO4 + H2SO4, pH 1 to pH 7 were analysed. In the pH < 3 range, hydrogen is evolved according to three different mechanisms, depending on the experimental ...
Jegdić Bore   +3 more
doaj   +1 more source

Directing Selectivity of Electrochemical Carbon Dioxide Reduction Using Plasmonics [PDF]

open access: yes, 2019
Catalysts for electrochemical carbon dioxide reduction in aqueous electrolytes suffer from high energy input requirements, competition with hydrogen evolution from water reduction, and low product selectivity. Theory suggests that plasmonic catalysts can
Corson, ER   +5 more
core   +2 more sources

Study on Hydrogen Evolution Reaction at a Graphite Electrode in the All-Vanadium Redox Flow Battery

open access: yesInternational Journal of Electrochemical Science, 2012
The hydrogen evolution reaction in the negative half-cell of a vanadium redox battery is studied at a graphite electrode. Hydrogen evolution behavior is included by potentiostatic method.
Fuyu Chen   +3 more
doaj   +1 more source

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