A Li–O2/CO2 battery based on bio-inspired engineering of the Bi2S3/PVP cathode

1. A PVP/Bi 2 S 3 is used as the cathode of Li–CO 2 battery for the first time. 2. The introduction of PVP not only increases the generation of S vacancy, but also improves the electronic conductivity of Bi 2 S 3 . 3. The proposed PVP/Bi 2 S 3 cathode can also be applied to Li–O 2 and Li–CO 2 battery systems.