Cobalt Single‐Atom Reverse Hydrogen Spillover for Efficient Electrochemical Water Dissociation and Dechlorination

Abstract Efficient water dissociation to atomic hydrogen (H*) with restrained recombination of H* is crucial for improving the H* utilization for electrochemical dechlorination, but is currently limited by the lack of feasible electrodes. Herein, we developed a monolithic single‐atom electrode with Co single atoms anchored on the inherent oxide layer of titanium foam (Co 1 −TiO x /Ti), which can efficiently dissociate water into H* and simultaneously inhibit the recombination of H*, by taking advantage of the single‐atom reverse hydrogen spillover effect. Experimental and theoretical calculations demonstrated that H* could be rapidly generated on the oxide layer of titanium foam, and then overflowed to the…

• NN
  National Natural Science Foundation of China

  Awards: U21A20286, U22A20402, 22102100
• CP
  China Postdoctoral Science Foundation

  Awards: 2021M702117, 2022M722080