Aqueous Zn–CO₂ batteries: a route towards sustainable energy storage

Abstract

In recent years, the concept of a rechargeable aqueous Zn-CO2 battery has attracted extensive attention, including a dual functionality of supplying power and simultaneously converting CO2 into value-added chemicals or...

Hierachical Aerogel-Supported Cu–Sn–Ox Solid Solutions for Highly Selective CO2 Electroreduction and Zn–CO2 Batteries

“…Concurrently, Zn dissolves in the electrolyte solution (reaction equation provided in the Supporting Information). Throughout the discharge process, the cathode supports the oxygen evolution reaction, which in turn promotes the reduction of Zn 2+ ions at the anode. − The zero-crossover barrier constructed with Cu–Sn–O x /rGO demonstrated an open circuit potential of 0.711 V (Figure b), closely aligning with the theoretical electric force of +0.707 V, which might be attributed to the suppression of HER by CO 2 evolution reaction. , The charge and discharge polarization curves of the SnO 2 /rGO and Cu–Sn–O x /rGO cells are presented in Figure c. The Cu–Sn–O x /rGO cell displays the maximum current density, exceeding 4 mA/cm 2 .…”