A long cycle life, high coulombic efficiency iron molten air battery
| Autor: | Shuzhi Liu, Baochen Cui, Wei Xiang, Xianjun Liu, Hongyu Xin, Stuart Licht |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Battery (electricity)
Renewable Energy Sustainability and the Environment Chemistry 020209 energy Metallurgy Energy Engineering and Power Technology 02 engineering and technology Electrolyte 021001 nanoscience & nanotechnology 7. Clean energy Energy storage Fuel Technology Electrode Service life 0202 electrical engineering electronic engineering information engineering Forensic engineering Constant current 0210 nano-technology Faraday efficiency Eutectic system |
| Zdroj: | Sustainable Energy & Fuels. 1:474-481 |
| ISSN: | 2398-4902 |
| DOI: | 10.1039/c6se00082g |
| Popis: | Despite the recent advancements in iron molten air batteries, great challenges still remain to realize cycling stability, high energy efficiency and a long-term cycling life. Herein, we demonstrate a new iron molten air battery for large-scale energy storage. We replace the KCl–LiCl–LiOH eutectic electrolyte used in our previous study with a Li0.87Na0.63K0.50CO3 eutectic electrolyte with added NaOH and LiOH. A fin air electrode configuration is designed to improve the coulombic efficiency. Cycling tests for the iron molten air battery showed a stable performance through 450 cycles with nearly 100% coulombic efficiency and an average discharge potential of ∼1.08 V when charged at a constant current of 0.05 A and discharged over a constant 100 Ω load to a 0.7 V cutoff at 500 °C. Moreover, the iron molten air battery had an excellent high-rate response up to 6.4C with a high coulombic efficiency of 95.1%. These results provide critical advances in developing iron molten air batteries with high efficiency and a long-term service life. |
| Databáze: | OpenAIRE |
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