A team of Foundry staff and users discovered that W2C can produce methane from CO2 at the highest rate and efficiency yet reported for electrocatalytic CO2 reduction.
Significance and Impact
This work is the first demonstration of an earth-abundant, highly active catalyst that selectively produces hydrocarbons. It opens the door to low-cost, sustainable large-scale production of fuels from CO2.
- Di-transition metal carbides (W, Mo, Nb, V) exhibit catalytic activity greater than Au and selectivity greater than Cu, with W2C as the leader.
- Density functional simulations reveal that key limiting steps: water dissociation, CO2 chemisorption, and C-O bond cleavage, are nearly spontaneous on W2C