Waste Heat Recovery for a PEM Electrolyzer

With hydrogen becoming an attractive energy carrier, the generation of green hydrogen through electrolysis to decarbonize sectors with high greenhouse gas (GHG) emissions such as the energy generation and transportation sectors has started to gain more traction as an important research focus. Electrolysis, as a process that is not fully efficient, results in the generation of waste heat. The scope of this paper is in increasing the overall efficiency of an electrolyzer system by utilizing the waste heat generated.