RuO2−x decorated CoSnO3 nanoboxes as a high performance cathode catalyst for Li–CO2 batteries

Abstract

Rechargeable Li–CO₂ batteries contribute towards lessening fossil fuel depletion and alleviating the “greenhouse effect”. However, more efforts must be made to figure out the critical problems of a high overpotential and poor cycling stability associated with this type of battery. Here, CoSnO₃/RuO_2−x nanocomposites were employed as an efficient air cathode for Li–CO₂ batteries, which can lower the overpotential and improve their long-term cycling performance (around 145 cycles) remarkably.