Interfacial Strategies for Suppression of Mn Dissolution in Rechargeable Battery Cathode Materials

It is urgent to develop high-performance cathode materials for rechargeable batteries to address the globally growing concerns of energy shortage and environmental pollution. Among many candidate materials, Mn-based materials are promising and already used in some commercial batteries. Yet, their applicable future in reversible energy storage is severely plagued by the notorious Mn dissolution behaviors associated with structural instability during long-term cycling. As such, interfacial strategies aiming to protect Mn-based electrodes against Mn dissolution are being widely developed in recent years. A variety of interface-driven designs have been reported to function efficiently in suppressing Mn dissolution, necessitating a timely summary of recent advancements in the field. In this review, various interfaces, including the prebuilt interface and the electrochemically induced interface, to suppress Mn dissolution for Mn-based cathodes are discussed in terms of their fabrication details and functional outcomes. Perspectives for the future of interfacial strategies aiming at Mn dissolution suppression are also shared.

Automated summary

Developing high-performance cathode materials is urgently needed to address the global concerns of energy shortage and environmental pollution. Mn-based materials have shown promise but are plagued by Mn dissolution due to structural instability. Interfacial strategies have been developed to protect Mn-based electrodes and suppress Mn dissolution, and this review discusses various interface designs and their outcomes.