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- Title
Electrochemical Splitting of Methane in Molten Salts To Produce Hydrogen.
- Authors
Fan, Zeyu; Xiao, Wei
- Abstract
Industrial hydrogen production based on methane steam reforming (MSR) remains challenges in intensive carbon emissions, retarded hydrogen generation owing to coke deposition over catalysts and huge consumption of water. We herein report an electrochemical splitting of methane (ESM) in molten salts at 500 °C to produce hydrogen in an energy saving, emission‐free and water‐free manner. Following the most energy‐saving route on methane‐to‐hydrogen conversion, methane is electrochemically oxidized at anode to generate carbon dioxide and hydrogen. The generated anodic carbon dioxide is in situ captured by the melts and reduced to solid carbon at cathode, enabling a spatial separation of anodic hydrogen generation from cathodic carbon deposition. Life‐cycle assessment on hydrogen‐generation technologies shows that the ESM experiences an equivalent carbon emission much lower than MSR, and a lower equivalent energy input than alkaline water electrolysis.
- Subjects
FUSED salts; HYDROGEN as fuel; STEAM reforming; WATER electrolysis; INTERSTITIAL hydrogen generation; COKE (Coal product); SMELTING furnaces
- Publication
Angewandte Chemie, 2021, Vol 133, Issue 14, p7742
- ISSN
0044-8249
- Publication type
Academic Journal
- DOI
10.1002/ange.202017243