RES Hydrogen: efficient pressurised alkaline electrolysers

Jacob R. Bowen, Janet Jonna Bentzen, Peter Stanley Jørgensen, Wei Zhang

Research output: Book/ReportReportResearch

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Abstract

The RESelyser project addresses issues associated with coupling alkaline electrolysis to renewable energy sources such as electrode stability and gas purity by implementing improved electrodes and a new separator membrane concept. The project aims to improve performance, operation pressure and reduce system cost. The project supports DTU Energy's activities on electrodes within the larger FCH-JU project. The overall project demonstrated: improved electrode efficiency also during cyclic operation, safe gas purity at a system pressure of 30 bar, 10 kW stack operation and estimated system costs including BoP. Investigation of cathodes revealed highly heterogeneous microstructures and 3D microstructure quantification methods were developed. Nanometre scale -Ni(OH)2 formation was identified on tested cathode surfaces and is considered a potential degradation mechanism that is not presently well understood.
Original languageEnglish
PublisherDTU Energy Conversion
Number of pages48
Publication statusPublished - 2015

Bibliographical note

Final report to Energinet.dk for RESelyser project. Report is available from http://energiforskning.dk/node/7012. Please make lilnk to the RESelyser project in ORBIT. Co-authors are listed on page 2 of report.

Cite this

Bowen, J. R., Bentzen, J. J., Jørgensen, P. S., & Zhang, W. (2015). RES Hydrogen: efficient pressurised alkaline electrolysers. DTU Energy Conversion.
Bowen, Jacob R. ; Bentzen, Janet Jonna ; Jørgensen, Peter Stanley ; Zhang, Wei. / RES Hydrogen: efficient pressurised alkaline electrolysers. DTU Energy Conversion, 2015. 48 p.
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RES Hydrogen: efficient pressurised alkaline electrolysers. / Bowen, Jacob R.; Bentzen, Janet Jonna; Jørgensen, Peter Stanley; Zhang, Wei.

DTU Energy Conversion, 2015. 48 p.

Research output: Book/ReportReportResearch

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AB - The RESelyser project addresses issues associated with coupling alkaline electrolysis to renewable energy sources such as electrode stability and gas purity by implementing improved electrodes and a new separator membrane concept. The project aims to improve performance, operation pressure and reduce system cost. The project supports DTU Energy's activities on electrodes within the larger FCH-JU project. The overall project demonstrated: improved electrode efficiency also during cyclic operation, safe gas purity at a system pressure of 30 bar, 10 kW stack operation and estimated system costs including BoP. Investigation of cathodes revealed highly heterogeneous microstructures and 3D microstructure quantification methods were developed. Nanometre scale -Ni(OH)2 formation was identified on tested cathode surfaces and is considered a potential degradation mechanism that is not presently well understood.

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Bowen JR, Bentzen JJ, Jørgensen PS, Zhang W. RES Hydrogen: efficient pressurised alkaline electrolysers. DTU Energy Conversion, 2015. 48 p.