A facile approach to derive binder protective film on high voltage spinel cathode materials against high temperature degradation
| Autor: | Jenq-Gong Duh, Cheng-Zhang Lu, Wei-Yu Chou, Yi-Chun Jin, Shih-Chieh Liao |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Aqueous solution Cost effectiveness Inorganic chemistry Spinel General Physics and Astronomy Surfaces and Interfaces General Chemistry Temperature cycling engineering.material Condensed Matter Physics Electrochemistry Lithium-ion battery Surfaces Coatings and Films Carboxymethyl cellulose Chemical engineering medicine engineering Dissolution medicine.drug |
| Zdroj: | Applied Surface Science. 355:1272-1278 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2015.08.046 |
| Popis: | The electrochemical performance of spinel LiNi 0.5 Mn 1.5 O 4 cathode combined with different binders at elevated temperature is firstly investigated. The water soluble binder, such as sodium carboxymethyl cellulose (CMC) and sodium alginate (SA), is compared with the polyvinylidene difluoride (PVdF) binder used in non-aqueous process. The aqueous process can meet the need of Li-ion battery industry due to environmental-friendly and cost effectiveness by replacing toxic organic solvent, such as N-methyl-pyrrolidone (NMP). In this study, a significantly improved high temperature cycling performance is successfully obtained as compared to the traditional PVdF binder. The aqueous binder can serve as a protective film which inhibits the serious Ni and Mn dissolution especially at elevated temperature. Our result demonstrates a facile approach to solve the problem of capacity fading for high voltage spinel cathodes. |
| Databáze: | OpenAIRE |
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