High-Capacity Mg-Organic Batteries Based on Nanostructured Rhodizonate Salts Activated by Mg-Li Dual-Salt Electrolyte
| Autor: | Chilin Li, Jing Tian, Xuejun Zhou, Minsong Huang, Jiulin Hu, Dunping Cao |
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| Rok vydání: | 2018 |
| Předmět: |
Battery (electricity)
Materials science General Engineering Oxide General Physics and Astronomy Organic radical battery 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Magnesium battery 01 natural sciences Cathode Energy storage 0104 chemical sciences Anode law.invention chemistry.chemical_compound Chemical engineering chemistry law General Materials Science 0210 nano-technology |
| Zdroj: | ACS nano. 12(4) |
| ISSN: | 1936-086X |
| Popis: | A magnesium battery is a promising candidate for large-scale transportation and stationary energy storage due to the security, low cost, abundance, and high volumetric energy density of a Mg anode. But there are still some obstacles retarding the wide application of Mg batteries, including poor kinetics of Mg-ion transport in lattices and low theoretical capacity in inorganic frameworks. A Mg–Li dual-salt electrolyte enables kinetic activation by dominant intercalation of Li-ions instead of Mg-ions in cathode lattices without the compromise of a stable Mg anode process. Here we propose a Mg–organic battery based on a renewable rhodizonate salt (e.g., Na2C6O6) activated by a Mg–Li dual-salt electrolyte. The nanostructured organic system can achieve a high reversible capacity of 350–400 mAh/g due to the existence of high-density carbonyl groups (C═O) as redox sites. Nanocrystalline Na2C6O6 wired by reduced graphene oxide enables a high-rate performance of 200 and 175 mAh/g at 2.5 (5 C) and 5 A/g (10 C), res... |
| Databáze: | OpenAIRE |
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