4.7 Article

Thermally stable and green cellulose-based composites strengthened by styrene-co-acrylate latex for lithium-ion battery separators

期刊

CARBOHYDRATE POLYMERS
卷 206, 期 -, 页码 801-810

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2018.11.025

关键词

Cellulose; Styrene-co-acrylate; Membrane; Mechanical property; Thermal stability

资金

  1. National Natural Science Foundation of China [31770623]
  2. Shandong Provincial Natural Science Foundation, China [ZR2017MB040]
  3. Shandong Province Higher Educational Science and Technology Program, P.R. China [J15LC03]
  4. Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, China [201604]
  5. Doctorate Fellowship Foundation of Nanjing Forestry University

向作者/读者索取更多资源

In this work, a thermally stable and eco-friendly separator composed of polyvinyl alcohol modified cellulose/styrene-co-acrylate composite (pCSA) was prepared via a facile and cost-effective phase inversion process. The results indicated that styrene-co-acrylate (SA) endowed the membrane with more network junctions, thereby, improving the film formation of membrane. Polyvinyl alcohol was used to further improve the electrolyte uptake of membrane, which was crucial for high electrical conductivity. The key merit of the as-prepared pCSA separator was embodied by its high porosity and wettability. Remarkable mechanical strength (58.7 MPa) and low thermal shrinkage stress (heating at 200 degrees C, 0.96 N) can be obtained by the fire resistant and tough SA in the composites. In addition, liquid electrolyte-soaked pCSA presented a high ionic conductivity of 1.34 mS cm(-1) at 30 degrees C and an excellent interfacial compatibility with electrode. Due to its simple preparation and superior performance, pCSA separators may open up a new field of application for lithium-ion battery separators where high safety, low cost and biocompatibility are required.

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