In the past few decades, researchers found that many metal oxide nanopowders could be the perfect catalysts in the CO2 electroreduction for their controllable various morphologies. In this work, we report the synthesis of SnOx nanocatalysts loaded on the multi-walled carbon nanotubes (MWCNTs), which electrochemical catalyzed CO2 to formate, HCOOH, on the room-temperature with an electrochemical cell having a catalytic SnOx cathode. We controlled different special morphologies by one-step hydrothermal method from SnCl2 precursors. The highest faradaic and energy efficiencies of 65% and 28% were obtained at −1.40 V vs. SCE with particles that were obtained by KOH reduction from a SnCl2 precursor and showed excellent stability in prolonged electrolysis.
C. Zhao, J.L. Wang, J.B. Goodenough Chemical Communication, 52,12175(2016).
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