Stop feeding hydrogen evolution
Kwangyeol Lee
Nature Water, Published online: 15 April 2026; doi:10.1038/s44221-026-00628-7 Nitrate electroreduction loses selectivity as accumulated hydrogen recombines to form H2. Nanoconfinement in carbon nanotubes reorganizes interfacial water, accelerates proton transfer, reduces hydrogen accumulation and enhances ammonia production.