ACS_Energy LETTERS
November 8, 2024
Volume 9, Issue 11
Pages 5268-5703
Electron-Assisted Charge Storage in Fused-Ring Aromatic Carbonyl Electrodes for Aqueous Manganese-Ion Batteries
Rechargeable manganese batteries hold promise for large-scale energy storage due to the abundance and eco-friendly nature of manganese. A key challenge is developing cathode materials capable of reversibly inserting Mn ions with a high specific capacity. Here, we demonstrate that perylene-3,4,9,10-tetracarboxylic dianhydride electrodes efficiently and reversibly insert Mn2+ ions in 3 M MnCl2 aqueous electrolyte solutions. Leveraging the carbonyl groups and the π-electron configuration, such compounds can serve as robust redox centers, facilitating reversible interactions with divalent ions such as Mn2+. Through comprehensive studies involving electrochemistry, elemental analyses, spectroscopy, and structural analysis, we explored these systems and found them as promising anode materials for Mn batteries. Demonstrating excellent Mn storage capabilities, such molecules could attain a reversible capacity of approximately >185 mAh g–1 at a current density of 100 mA g–1, maintaining an average voltage of approximately 0.8 V vs Mn/Mn2+, while exhibiting notable capacity retention.
- Hyungjin Lee
- Amey Nim
- karNetanel Shpigel
- Daniel Sharon
- Seung-Tae Hong
- Doron Aurbach
- Munseok S. Chae
https://pubs.acs.org/doi/10.1021/acsenergylett.4c02418
Image created by minjeong Kim / Nanosphere
ACS_Energy LETTERS
November 8, 2024
Volume 9, Issue 11
Pages 5268-5703
Electron-Assisted Charge Storage in Fused-Ring Aromatic Carbonyl Electrodes for Aqueous Manganese-Ion Batteries
Rechargeable manganese batteries hold promise for large-scale energy storage due to the abundance and eco-friendly nature of manganese. A key challenge is developing cathode materials capable of reversibly inserting Mn ions with a high specific capacity. Here, we demonstrate that perylene-3,4,9,10-tetracarboxylic dianhydride electrodes efficiently and reversibly insert Mn2+ ions in 3 M MnCl2 aqueous electrolyte solutions. Leveraging the carbonyl groups and the π-electron configuration, such compounds can serve as robust redox centers, facilitating reversible interactions with divalent ions such as Mn2+. Through comprehensive studies involving electrochemistry, elemental analyses, spectroscopy, and structural analysis, we explored these systems and found them as promising anode materials for Mn batteries. Demonstrating excellent Mn storage capabilities, such molecules could attain a reversible capacity of approximately >185 mAh g–1 at a current density of 100 mA g–1, maintaining an average voltage of approximately 0.8 V vs Mn/Mn2+, while exhibiting notable capacity retention.
https://pubs.acs.org/doi/10.1021/acsenergylett.4c02418
Image created by minjeong Kim / Nanosphere