A Self‐Conditioned Metalloporphyrin as a Highly Stable Cathode for Fast Rechargeable Magnesium Batteries
| العنوان: | A Self‐Conditioned Metalloporphyrin as a Highly Stable Cathode for Fast Rechargeable Magnesium Batteries |
|---|---|
| المؤلفون: | Svetlana Klyatskaya, Shirin Shakouri, Maximilian Fichtner, Mario Ruben, Zhi Chen, Julia Maibach, Zhirong Zhao-Karger, Ebrahim Abouzari-Lotf, Zhenyou Li, Raheleh Azmi |
| المصدر: | Chemsuschem |
| بيانات النشر: | Wiley, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Materials science, General Chemical Engineering, Specific discharge, electrode materials, Analytical chemistry, chemistry.chemical_element, 02 engineering and technology, porphyrins, 010402 general chemistry, 01 natural sciences, Redox, law.invention, Metal, law, multi-electron redox reactions, Environmental Chemistry, General Materials Science, High current density, Electrode material, Magnesium, Communication, 021001 nanoscience & nanotechnology, Communications, Cathode, magnesium batteries, 0104 chemical sciences, General Energy, chemistry, transmetalation, visual_art, Energy density, visual_art.visual_art_medium, 0210 nano-technology |
| الوصف: | Development of practical rechargeable Mg batteries (RMBs) is impeded by their limited cycle life and rate performance of cathodes. As demonstrated herein, a copper‐porphyrin with meso‐functionalized ethynyl groups is capable of reversible two‐ and four‐electron storage at an extremely fast rate (tested up to 53 C). The reversible four‐electron redox process with cationic‐anionic contributions resulted in a specific discharge capacity of 155 mAh g−1 at the high current density of 1000 mA g−1. Even at 4000 mA g−1, it still delivered >70 mAh g−1 after 500 cycles, corresponding to an energy density of >92 Wh kg−1 at a high power of >5100 W kg−1. The ability to provide such high‐rate performance and long‐life opens the way to the development of practical cathodes for multivalent metal batteries. Self‐conditioning: The metalloporphyrin based electrodes exhibit reversible insertion/deinsertion of Mg2+ and bulky anions as well as excellent capacity retention over several hundred cycles at very fast charge‐discharge rates. This opens the pathway for development of new organic electrode materials for stable high‐energy and high‐power multivalent metal‐based energy storage systems. |
| تدمد: | 1864-564X 1864-5631 |
| DOI: | 10.1002/cssc.202100340 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af7f5bb6308d5f714b09b80122fdba20 https://doi.org/10.1002/cssc.202100340 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....af7f5bb6308d5f714b09b80122fdba20 |
| قاعدة البيانات: | OpenAIRE |
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As demonstrated herein, a copper‐porphyrin with meso‐functionalized ethynyl groups is capable of reversible two‐ and four‐electron storage at an extremely fast rate (tested up to 53 C). The reversible four‐electron redox process with cationic‐anionic contributions resulted in a specific discharge capacity of 155 mAh g−1 at the high current density of 1000 mA g−1. Even at 4000 mA g−1, it still delivered >70 mAh g−1 after 500 cycles, corresponding to an energy density of >92 Wh kg−1 at a high power of >5100 W kg−1. The ability to provide such high‐rate performance and long‐life opens the way to the development of practical cathodes for multivalent metal batteries.<br />Self‐conditioning: The metalloporphyrin based electrodes exhibit reversible insertion/deinsertion of Mg2+ and bulky anions as well as excellent capacity retention over several hundred cycles at very fast charge‐discharge rates. 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