Roll-to-roll atomic layer deposition of titania coating on polymeric separators for lithium ion batteries
| Autor: | Siyong Gu, Hao-Wei Liu, Yasser Ashraf Gandomi, Lin Yeou-Fu, Ruey-Shin Juang, Chao Chia-Hung, Cherng Yuh Su, Chien-Te Hsieh, Bikash Chandra Mallick, Chun-Chieh Fu, Wen-Jie Ke, Li-Wei Lee |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Energy Engineering and Power Technology 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Lithium-ion battery Roll-to-roll processing chemistry.chemical_compound Atomic layer deposition Coating Ceramic Electrical and Electronic Engineering Physical and Theoretical Chemistry Titanium isopropoxide Porosity Renewable Energy Sustainability and the Environment 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Chemical engineering visual_art visual_art.visual_art_medium engineering 0210 nano-technology Layer (electronics) |
| Zdroj: | Journal of Power Sources. 482:228896 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2020.228896 |
| Popis: | Atomic layer deposition (ALD) on flexible substrates has rarely been demonstrated using roll-to-roll (R2R) coating configuration. We develop R2R ALD technique to uniformly coat TiO2 layer on the porous polyethylene (PE) separators for Li-ion batteries (LIBs). The R2R ALD method using titanium isopropoxide and water as the precursors enables a precise control over the growth of TiO2 nanolayer on PE separators. The TiO2-coated separators remarkably improve the LIB performance, as compared to the LIBs utilizing pristine polymeric membranes. The TiO2 deposition also enhances the thermal and dimensional stability, through forming a stabilizing and robust skeleton within the polymeric matrix. Accordingly, the TiO2 layers play a critical role in boosting the LIB performance, via increasing the ionic conductivity, decreasing high-frequency impedance, and enhancing the electrolyte wettability. Ultimately, the application of ceramic nanocoating on the PE-based porous separators results in improved safety, higher energy density, and excellent cycleability during high-temperature and long-duration cycling of LIBs. Thus, the TiO2-coated separators can be easily adopted to replace the commercially available separators due to excellent performance and reduced cost of manufacturing. The production rate of the ceramic separators can reach as high as 2.4 m min−1 fulfilling the requirements of the industrial and large-scale production. |
| Databáze: | OpenAIRE |
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