Low-temperature hydrogen production from water and methanol using Pt/α-MoC catalysts. Opportunities and challenges for a sustainable energy future.
This study provides a promising avenue for the safe, efficient and scalable production of high-purity hydrogen.Ĭhu, S. The assembled electrolyser requires an electricity input of only ~0.35 kWh per m 3 of H 2, in contrast to the ~5 kWh per m 3 of H 2 required for conventional water electrolysis. Unlike conventional aldehyde electrooxidation, in which the hydrogen atom of the aldehyde group is oxidized into H 2O at high potentials, the low-potential aldehyde oxidation enables the hydrogen atom to recombine into H 2 gas. Here we report a hydrogen production system that combines anodic and cathodic H 2 production from low-potential aldehyde oxidation and the hydrogen evolution reaction, respectively, at a low voltage of ~0.1 V.
Hydrogen production through water electrolysis is of considerable interest for converting the intermittent electricity generated by renewable energy sources into storable chemical energy, but the typical water electrolysis process requires a high working voltage (>1.23 V) and produces oxygen at the anode in addition to hydrogen at the cathode.