PEM electrolysis coupled with thermal energy storage

Chinese researchers claim to have improved the performance of a proton exchange membrane electrolyzer by connecting it to a thermal energy storage system.A research group from China has shown how proton exchange membrane (PEM) electrolysis could be combined with thermal energy storage to maintain a high-efficiency operating range for electrolyzers when renewable energy is connected to hydrogen production systems. PEM electrolyzers cannot maintain stable operating temperatures as input power changes, as the polarization curve distorts with the change of temperature. "This work proposes a PEM electrolyzer ...

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