Thermal behavior and performance trajectories of electrolysers

Hui Zhang, Akira Miyamoto, Ai Suzuki, Haijiang Wang, Mark C. Williams

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This work is devoted to thermodynamic interpretations and electrical network analyses for the operational considerations of electrolyser cell (EC) systems composed of low/high-temperature electrolysers and heat engines. Detailed trajectories of current density, required power, and practice heat have been addressed to demonstrate the optimal operation mode of the systems in terms of hydrogen production rate and efficiency, as well as power consumption. Suitable simulations exhibit a boundary current path at the thermal neutral (TN) modes between heat addition and heat removal (occurring after heat addition). Results indicate that the integration of high-temperature electrolysers with renewable energy from solar or geothermal to optimize the hydrogen production efficiency and reduce power consumption is of high interest. It is more important to understand that heat removal can further increase hydrogen production rate over thermoneutral path at constant temperature. The analyses also demonstrates that adding renewable heat and minimizing area specific resistance (ASR) would be highly desirable for further developing high-efficient and low-consumption EC systems.

Original languageEnglish
Title of host publicationECS Transactions
EditorsM. C. Williams
PublisherElectrochemical Society Inc.
Number of pages14
ISBN (Electronic)9781607688426, 9781623325206
Publication statusPublished - 2018
Event2017 Fuel Cell Seminar and Energy Exposition, FCS and EE 2017 - Long Beach, United States
Duration: 2017 Nov 72017 Nov 9

Publication series

NameECS Transactions
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862


Other2017 Fuel Cell Seminar and Energy Exposition, FCS and EE 2017
Country/TerritoryUnited States
CityLong Beach

ASJC Scopus subject areas

  • Engineering(all)


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