A-site cationic defects induced electronic structure regulation of LaMnO3 perovskite boosts oxygen electrode reactions in aprotic lithium–oxygen batteries

Transition metal oxides with perovskite and spinel structures for electrochemical energy production applications

“…On the other hand, Matseke et al (2020) observed that ultrasonication enhances the stability of CoFe 2 O 4 in ORR because it favors the migration of cations to T-sites, which are more stable than O-sites in this spinel. Du et al (2021) reported that A-site cationic defects in LaMnO 3 perovskite enhance the covalency of Mn-O bonds, thus optimizing the e g orbital filling. Therefore, the high stability under ORR conditions was ascribed to the modulation of the electronic structure, which also provides more active sites available for this reaction.…”

Review on Sol-Gel Synthesis of Perovskite and Oxide Nanomaterials

“…Conversely, Chaozhu Shu et al [ 57 ] used a facile nonstoichiometric strategy to introduce A-site cationic vacancies in LaMnO 3 , La 0.9 MnO 3 , La 0.7 MnO 3 , perovskite oxides were synthesized by combining Sol-Gel method and thermal treatment process in air. This procedure provides the advantage of great specific surface area and abundant cationic La vacancies on the surface, La 0.7 MnO 3− δ (L 0.7 MO) can provide effective active sites for oxygen electrode reactions and a large storage space for Li 2 O 2 accommodation.…”

Vacancy‐induced LaMnO3 Perovskite as Bifunctional Air‐breathing Electrode for Rechargeable Lithium‐Air Battery

“…Perovskite metal‐oxides also have several attractive features such as good thermal stability, tunable electronic structure, conductivity, high catalytic activity, redox features etc. which are highly required for the electrochemical applications [10,11] . Lanthanum manganese oxide (LaMnO 3 ) is a typical perovskite oxide having ABO 3 structure, where A is a typical lanthanide, alkaline or alkaline‐earth metal (Eg.…”

“…which are highly required for the electrochemical applications. [10,11] Lanthanum manganese oxide (LaMnO 3 ) is a typical perovskite oxide having ABO 3 structure, where A is a typical lanthanide, alkaline or alkaline-earth metal (Eg. La, Sr or Ca) and B is a transition metal such as Mn, Co, Fe, Ni, Cr or Ti.…”