Sheng Jie, Wang Ruibin, Yang Rendang
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
School of Materials and Energy, Center of Emerging Material and Technology, Guangdong University of Technology, Guangzhou 510006, China.
Materials (Basel). 2018 Dec 20;12(1):2. doi: 10.3390/ma12010002.
High electrolyte wettability, thermal dimensional stability, and tensile strength are prerequisites for implementing separators in practical applications. In this study, we report on the discovery of nanofibril membranes derived from various plant fibers commonly used in the papermaking industry, for low cost and higher performances than the commercially available Celgard2325 in regard to the application of separators for lithium-ion batteries. Nanofibril membranes showed water contact angles as low as 18°, negligible size change at a heating temperature of 160 °C for 120 min, and tensile strength up to 137.6 MPa. The homogenization was found to strongly contribute to these improved performances. These findings suggest that the plant fiber-derived nanofibril membranes are anticipated to be promising candidates as separators for lithium-ion batteries.
高电解质润湿性、热尺寸稳定性和拉伸强度是隔膜在实际应用中得以实现的前提条件。在本研究中，我们报告了从造纸工业中常用的各种植物纤维衍生出的纳米原纤膜的发现，就锂离子电池隔膜的应用而言，该膜成本低廉且性能优于市售的Celgard2325。纳米原纤膜的水接触角低至18°，在160°C加热120分钟时尺寸变化可忽略不计，拉伸强度高达137.6MPa。发现均化对这些性能的改善有很大贡献。这些发现表明，源自植物纤维的纳米原纤膜有望成为锂离子电池隔膜的有前途的候选材料。
