Robust Benzimidazole-Based Electrolyte Overcomes High-Voltage and High-Temperature Applications in 5 V Class Lithium Ion Batteries
| Autor: | Ping-Ling Lin, Meng-Lin Lu, Shih-Han Huang, Chia-Hung Su, Shih-Chang Chang, Alagar Ramar, Nan-Hung Yeh, Chung-Kai Chang, Jyh-Fu Lee, Sylvia Ayu Pradanawati, Hwo-Shuenn Sheu, Ya-Tang Yang, Fu-Ming Wang |
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| Rok vydání: | 2017 |
| Předmět: |
Benzimidazole
General Chemical Engineering Inorganic chemistry chemistry.chemical_element High voltage 02 engineering and technology General Chemistry Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Ring (chemistry) 01 natural sciences Redox 0104 chemical sciences Ion chemistry.chemical_compound chemistry Materials Chemistry Imidazole Lithium 0210 nano-technology |
| Zdroj: | Chemistry of Materials. 29:5537-5549 |
| ISSN: | 1520-5002 0897-4756 |
| DOI: | 10.1021/acs.chemmater.7b00824 |
| Popis: | Electric vehicles (EVs) are poised to dominate the next generation of transportation, but meeting the power requirements of EVs with lithium ion batteries is challenging because electrolytes containing LiPF6 and carbonates do not perform well at high temperatures and voltages. However, lithium benzimidazole salt is a promising electrolyte additive that can stabilize LiPF6 through a Lewis acid–base reaction. The imidazole ring is not eligible for high-voltage applications owing to its resonance structure, but in this research, electron-withdrawing (−CF3) and electron-donating (−CH3) substitutions on imidazole rings were investigated. According to the calculation results, the CF3 substitution facilitates a high electron cloud density on imidazole ring structures to resist the electron releases from bezimidazole in oxidation reactions. In addition, through CF3 substitution, electrons are accepted from the lattice oxygen (O2–) in lithium-rich layer material and O– is converted by an electron released. The O– ... |
| Databáze: | OpenAIRE |
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