Why do perovskites adsorb vanadium ions?

For perovskites, oxygen-containing functional groups are formed at B-O binding to boost the adsorption of vanadium ions. In addition, perovskite has a stable structure and accommodates multi-valence B-site ions and structure defect, which effectively promotes the electron transfer of vanadium redox reactions.

Can LA-based perovskite be used as a catalyst for vanadium redox reactions?

Herein, we successfully fabricated La-based perovskite of LaBO 3 (B = V, Cr, Mn, Fe, Co) as catalyst of graphite felt (GF) electrode for vanadium redox reactions (Fig. 1) and uncovered their underlying catalytic mechanisms. For perovskites, oxygen-containing functional groups are formed at B-O binding to boost the adsorption of vanadium ions.

Are perovskites a good material for electrocatalysis?

Perovskites have been attractive materials in electrocatalysis due to their virtues of low cost, variety, and tuned activity. Herein, we firstly demonstrate superior electrochemical kinetics of LaBO 3 (B = V, Cr, Mn) perovskites towards vanadium redox reactions in vanadium redox flow batteries (VRFBs).

Are perovskites a good material for batteries?

Moreover, perovskites can be a potential material for the electrolytes to improve the stability of batteries. Additionally, with an aim towards a sustainable future, lead-free perovskites have also emerged as an important material for battery applications as seen above.

What is the intrinsic catalysis of perovskites for vanadium redox reactions?

The intrinsic catalysis of perovskites for vanadium redox reactions is in increasing order of LaVO 3 < LaCrO 3 < LaMnO 3.

Can perovskite oxides be used in Ni-oxide batteries?

Overall, the usage of perovskite oxides in Ni–oxide batteries is based on the advantages presented for these materials in the catalysis and ionic conduction applications. For instance, perovskite oxides can be designed with a range of compositions and elements in A- and B-sites, which allow to tailor the electrochemical properties.