Atomic-scale Mapping of Dissolution/Deposition Pathways in MnO 2 Polymorphs for Aqueous Zn-MnO 2 Batteries

Key Points

• This research aims to uncover the microscopic mechanisms behind the dissolution-deposition behavior of MnO2 in aqueous Zn-MnO2 batteries.
• Performed atomic-scale mapping using first-principles simulations.
• Analyzed various MnO2 polymorphs to investigate their effects on battery performance.
• Explored the interaction of dissolution-deposition pathways with other energy storage mechanisms.
• Identified specific dissolution and deposition pathways that enhance the reversibility of MnO2.
• Demonstrated unique interactions between MnO2 polymorphs and aqueous environments that influence performance.
• Provided insights into optimizing cathode materials for improved battery efficiency.