Activation of Ni Particles into Single Ni–N Atoms for Efficient Electrochemical Reduction of CO₂

Electrochemical reduction of carbon dioxide (CO 2 ) to fuels and value‐added industrial chemicals is a promising strategy for keeping a healthy balance between energy supply and net carbon emissions. Here, the facile transformation of residual Ni particle catalysts in carbon nanotubes into thermally stable single Ni atoms with a possible NiN 3 moiety is reported, surrounded with a porous N‐doped carbon sheath through a one‐step nanoconfined...