Searched for: author%3A%22Smith%2C+W.A.%22
(1 - 8 of 8)
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Blommaert, M.A. (author), Subramanian, S.S. (author), Yang, K. (author), Smith, W.A. (author), Vermaas, D.A. (author)
Typically, anion exchange membranes (AEMs) are used in CO2 electrolyzers, but those suffer from unwanted CO2 crossover, implying (indirect) energy consumption for generating an excess of CO2 feed and purification of the KOH anolyte. As an alternative, bipolar membranes (BPMs) have been suggested, which mitigate the reactant loss by...
journal article 2021
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Blommaert, M.A. (author), Aili, David (author), Tufa, Ramato Ashu (author), Li, Qingfeng (author), Smith, W.A. (author), Vermaas, D.A. (author)
Bipolar membranes (BPMs) are gaining interest in energy conversion technologies. These membranes are composed of cation- and anion-exchange layers, with an interfacial layer in between. This gives the freedom to operate in different conditions (pH, concentration, composition) at both sides. Such membranes are used in two operational modes,...
review 2021
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Blommaert, M.A. (author), sharifian, rezvan (author), Shah, N. (author), Nesbitt, N.T. (author), Smith, W.A. (author), Vermaas, D.A. (author)
A bipolar membrane (BPM), consisting of a cation and an anion exchange layer (CEL and AEL), can be used in an electrochemical cell in two orientations: reverse bias and forward bias. A reverse bias is traditionally used to facilitate water dissociation and control the pH at either side. A forward bias has been proposed for several...
journal article 2021
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Blommaert, M.A. (author), Verdonk, J.A.H. (author), Blommaert, Hester C.B. (author), Smith, W.A. (author), Vermaas, D.A. (author)
A bipolar membrane (BPM) can be used to accelerate water dissociation to maintain a pH gradient in electrochemical cells, providing freedom to independently optimize the environments and catalysts used for paired reduction and oxidation reactions. The two physical layers in a BPM, respectively, selective for the exchange of cations and anions...
journal article 2020
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Smith, W.A. (author), Burdyny, T.E. (author), Vermaas, D.A. (author), Geerlings, J.J.C. (author)
Using renewable energy as an input, Power-to-X technologies have the potential to replace fossil fuels and chemicals with dense-energy carriers that are instead derived out of thin air. In this work, we put into context what the industrial-scale production of chemicals from ambient CO<sub>2</sub> using CO<sub>2</sub> electrolysis means in...
review 2019
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Blommaert, M.A. (author), Vermaas, D.A. (author), Izelaar, Boaz (author), In'T Veen, Ben (author), Smith, W.A. (author)
A bipolar membrane (BPM) can be used to maintain a pH difference in an electrolysis cell, which provides freedom to independently optimize the environments and catalysts used for paired redox reactions. A BPM consists of two physical layers, of which one is selective for the exchange of cations and the other for anions. The water dissociation...
journal article 2019
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Trzesniewski, B.J. (author), Digdaya, I.A. (author), Nagaki, T. (author), Ravishankar, Sandheep (author), Herraiz-Cardona, Isaac (author), Vermaas, D.A. (author), Longo, Alessandro (author), Gimenez, Sixto (author), Smith, W.A. (author)
Bismuth vanadate (BiVO<sub>4</sub>) is one of the most efficient light absorbing metal oxides for solar water splitting. BiVO<sub>4</sub> photoanodes immersed in an electrolyte in an open circuit configuration and exposed to simulated solar illumination for prolonged time achieve superior photoelectrochemical (PEC) activity. This...
journal article 2017
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Vermaas, D.A. (author), Sassenburg, M. (author), Smith, W.A. (author)
Different pH requirements for a cathode and an anode result in a non-optimal performance for practical solar fuel systems. We present for the first time a photo-assisted water splitting device using a bipolar membrane, which allows a cathode to operate in an acidic electrolyte while the photoanode is in alkaline conditions. The bipolar membrane...
journal article 2015
Searched for: author%3A%22Smith%2C+W.A.%22
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