Extending the low temperature operational limit of Li-ion battery to −80 °C
| Autor: | Ningyi Yuan, Joselito M. Razal, Shanhai Ge, Yury Gogotsi, Xuehang Wang, Jianning Ding, Xi Wang, Si Qin, Jiang Xu |
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| Rok vydání: | 2019 |
| Předmět: |
Battery (electricity)
Work (thermodynamics) Materials science Renewable Energy Sustainability and the Environment Diffusion Binding energy Analytical chemistry Energy Engineering and Power Technology 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Ion chemistry.chemical_compound chemistry Ionic conductivity General Materials Science 0210 nano-technology Lithium titanate |
| Zdroj: | Energy Storage Materials. 23:383-389 |
| ISSN: | 2405-8297 |
| DOI: | 10.1016/j.ensm.2019.04.033 |
| Popis: | Achieving high performance during low-temperature operation of lithium-ion (Li+) batteries (LIBs) remains a great challenge. In this work, we choose an electrolyte with low binding energy between Li+ and solvent molecule, such as 1,3-dioxolane-based electrolyte, to extend the low temperature operational limit of LIB. Further, to compensate the reduced diffusion coefficient of the electrode material at ultralow temperature, nanoscale lithium titanate is used as electrode material, which finally, we demonstrate a LIB with unprecedented low-temperature performance, delivering ∼60% of its room-temperature capacity (0.1 °C rate) at −80 °C. Though insufficient ionic conductivity of the electrolyte is generally considered as the main reason for the poor low-temperature performance in LIBs, we found that the sluggish desolvation of solvated Li+ at the liquid-solid interface might be the critical factor. These findings provide evidence for the effective design of robust LIBs for ultralow temperature applications. |
| Databáze: | OpenAIRE |
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