Ultrasmall Bi nanoparticles confined in carbon nanosheets as highly active and durable catalysts for CO2 electroreduction

[Display omitted] •Binder-free electrode is obtained by a dip coating and calcination two-step method.•Ultrasmall Bi nanoparticles are confined in the in‐situ‐formed carbon nanosheets.•High durability is achieved at a remarkable high current density for nearly 40 h.•The electrode exhibits excellent...

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