Investigation of nano-CeO 2 contents on the properties of polymer ceramic separator for high voltage lithium ion batteries
| Autor: | Yunmin Zhu, Fangbing Chen, Weishan Li, Youhao Liao, Minsui Li, Qiming Huang, Xueyi Luo |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Energy Engineering and Power Technology 02 engineering and technology Electrolyte engineering.material 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound Coating Magazine law Ionic conductivity Ceramic Electrical and Electronic Engineering Physical and Theoretical Chemistry Separator (electricity) chemistry.chemical_classification Chromatography Renewable Energy Sustainability and the Environment Polymer Polyethylene 021001 nanoscience & nanotechnology 0104 chemical sciences Chemical engineering chemistry visual_art visual_art.visual_art_medium engineering 0210 nano-technology |
| Zdroj: | Journal of Power Sources. 348:229-238 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2017.02.085 |
| Popis: | Currently, the suitable proportion of inorganic particles in the ceramic separator has not been reported yet, due to the contradictory about the content of nano-particles in research papers (10 wt.%) and commercial application (large amount) [1,2]. In this paper, the nano-CeO 2 contents on the properties of polyethylene (PE)-supported separator coating with poly (methyl methacrylate-butyl acrylate-acrylonitrile-styrene) (P(MMA-BA-AN-St)) copolymer is investigated systematically used in high voltage batteries for the first time. Since the copolymer contributes to high electrolyte uptake, and nano-CeO 2 dedicates dimensional stability, the separator with 10 wt.% nano-CeO 2 shows the highest ionic conductivity (2.5 × 10 −3 S cm −1 ) at room temperature and the maximal electrolyte uptake (81.0 g m −2 ), while the separator with 100 wt.% nano-CeO 2 exhibits better mechanical strength (52 MPa) and smaller shrinkage percentage (36%). Successively, cyclic performance of Li/LiNi 0.5 Mn 1.5 O 4 cells indicates that the capacity retention of the cell using separator with 100 wt.% nano-CeO 2 (72%) is second only to that with 10 wt.% nano-CeO 2 (74%) after 200 cycles at 0.2 C between 3 V and 5 V, far larger than that without doping nano-CeO 2 (51%) and PE (40%). By the consideration both of comprehensive performances and economic cost, 100 wt.% content is regarded as the most suitable appending proportion. |
| Databáze: | OpenAIRE |
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