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Article

Application of Photo-Electrochemically Generated Hydrogen with Fuel Cell Based Micro-Combined Heat and Power: A Dynamic System Modelling Study

1
Electrochemical Innovation Lab, Department of Chemical Engineering, University College London, London WC1E 7JE1, UK
2
Centre for Process Systems Engineering, Department of Chemical Engineering, University College London, London WC1E 7JE2, UK
3
Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
*
Author to whom correspondence should be addressed.
Academic Editor: Mark Symes
Molecules 2020, 25(1), 123; https://doi.org/10.3390/molecules25010123
Received: 19 September 2019 / Revised: 18 December 2019 / Accepted: 19 December 2019 / Published: 28 December 2019
(This article belongs to the Special Issue Electrocatalytic Water Splitting)
Photo-electrochemical (PEC) hydrogen generation is a promising technology and alternative to photovoltaic (PV)-electrolyser combined systems. Since there are no commercially available PEC cells and very limited field trials, a computer simulation was used to assess the efficacy of the approach for different domestic applications. Three mathematical models were used to obtain a view on how PEC generated hydrogen is able to cover demands for a representative dwelling. The analysed home was grid-connected and used a fuel cell based micro-CHP (micro-combined heat and power) system. Case studies were carried out that considered four different photo-electrode technologies to capture a range of current and possible future device efficiencies. The aim for this paper was to evaluate the system performance such as efficiency, fuel consumption and CO2 reduction capability. At the device unit level, the focus was on photo-electrode technological aspects, such as the effect of band-gap energy represented by different photo-materials on productivity of hydrogen and its uncertainty caused by the incident photon-to-current conversion efficiency (IPCE), which is highly electrode preparation specific. The presented dynamic model allows analysis of the performance of a renewable energy source integrated household with variable loads, which will aid system design and decision-making. View Full-Text
Keywords: solar-to-hydrogen efficiency; photo-electrochemical cell; polymer electrolyte membrane fuel cell; micro-CHP; gas boiler; CO2 reduction solar-to-hydrogen efficiency; photo-electrochemical cell; polymer electrolyte membrane fuel cell; micro-CHP; gas boiler; CO2 reduction
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MDPI and ACS Style

Ronaszegi, K.; Fraga, E.S.; Darr, J.; Shearing, P.R.; Brett, D.J.L. Application of Photo-Electrochemically Generated Hydrogen with Fuel Cell Based Micro-Combined Heat and Power: A Dynamic System Modelling Study. Molecules 2020, 25, 123. https://doi.org/10.3390/molecules25010123

AMA Style

Ronaszegi K, Fraga ES, Darr J, Shearing PR, Brett DJL. Application of Photo-Electrochemically Generated Hydrogen with Fuel Cell Based Micro-Combined Heat and Power: A Dynamic System Modelling Study. Molecules. 2020; 25(1):123. https://doi.org/10.3390/molecules25010123

Chicago/Turabian Style

Ronaszegi, Krisztian; Fraga, Eric S.; Darr, Jawwad; Shearing, Paul R.; Brett, Dan J.L. 2020. "Application of Photo-Electrochemically Generated Hydrogen with Fuel Cell Based Micro-Combined Heat and Power: A Dynamic System Modelling Study" Molecules 25, no. 1: 123. https://doi.org/10.3390/molecules25010123

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