CdSe/ZnS QD@CNT nanocomposite photocathode for improvement on charge overpotential in photoelectrochemical Li-O2 batteries

Recent advances in heterostructured cathodic electrocatalysts for non-aqueous Li–O2batteries

“…In recent years, photocatalysis has also been developed rapidly and applied to the field of Li–O 2 batteries. Veeramani and coworkers 139 developed a photocathode nanocomposite of cadmium selenide/zinc sulfide quantum dots grown on carbon nanotubes (CdSe/ZnS QD@CNT), and it shows a low charge voltage within 4.0 V; this is because during charging, the photoexcited holes created by the photoelectrode absorbing photons from the light source on the heterostructure interfaces can assist to oxidize Li 2 O 2 to oxygen gas and Li + in the valence band (VB) position ( Fig. 8d ).…”

Recent progress in quantum dots based nanocomposite electrodes for rechargeable monovalent metal-ion and lithium metal batteries

“…The photocathode upon illumination transfers electron–hole pairs to the electrode and facilitates the charging process. Designing of such a photocathode with QD based composites (CdSe/ZnS QD@CNT) was demonstrated by Veeramani et al , 256 where the CNT support ensured facile electron and mass transport, and the CdSe/ZnS QDs facilitated the charging process by transferring multiple electron–hole pairs to electrode materials upon illumination. As a Li–O 2 battery cathode, it showed a significantly lower charging overpotential, 2.65–4.07 V, under illumination, which was 2.65–4.4 V without illumination.…”

Curtailing the Overpotential of Li–CO2 Batteries with Shape‐Controlled Cu2O as Cathode: Effect of Illuminating the Cathode

“…As imilar result on the effect of illumination using CdSe/ZnS quantum dots in the presence of CNT has been published by our group. [38]…”