Recent Progress of Green Hydrogen Production Technology
Newswise — Researchers from China University of Petroleum-Beijing, et al. have conducted a study entitled “Recent progress of green hydrogen production technology”. This study was published in Front. Chem. Sci. Eng., Volume 19, Issue 10.
Water electrolysis hydrogen production (over 99.7% purity, flexible for renewable energy) is key for green hydrogen, aligning with global energy transformation, but its engineering application reviews are scarce. The study summarized progress/bottlenecks of four core technologies (AWE, PEMWE, SOEC, AEMWE), linked academic-industrial research, and pointed out directions. It clarified electrolysis principles (decomposing water via HER/OER, cell voltage related to theoretical value, overpotentials, resistance) and technical differences (e.g., AWE uses KOH, SOEC operates at 600–1000 °C for energy saving). Materials: AWE replaced asbestos with non-asbestos diaphragms; PEMWE relies on high-cost Nafion (research on thinning/non-precious catalysts); AEMWE solves low OH⁻ conductivity via microphase structures; SOEC uses YSZ electrolyte (doped with Y₂O₃) but faces high-temperature corrosion. Electrodes focus on activity/cost reduction (e.g., PEMWE lowers Ir loading). Applications: AWE is mature (LONGi’s 2.5 GW) but poor in dynamic response; PEMWE suits distributed scenarios (Huadian’s 1 MW); SOEC is efficient (88.5% LHV, Sunfire’s 2.6 MW) but in demonstration; AEMWE advances rapidly (Enapter’s MW-class). Future directions: improve efficiency, cut costs via scale production, enhance renewable integration; China targets ¥1 trillion hydrogen output by 2025 and 10% terminal energy share by 2050.
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