LLZTO/Acrylic Composite Solid Electrolyte Obtained From Decomposition Of Waste Textile Fiber

Recently, Professor Hu Yi's team from Zhejiang University of Science and Technology and Professor Fu Kun's team from the University of Delaware in the United States cooperated to build a solid electrolyte of polyacrylonitrile based ceramic composite nanofibers reinforced by 3D fiber network using waste acrylic yarns as raw materials, providing new ideas for the recycling of waste textile fibers, It also provides a low-cost and feasible solution for the development of high-performance solid electrolyte suitable for the field of flexible wearable electronics.

Acrylic fiber is a synthetic fiber made of polyacrylonitrile acrylonitrile copolymer. The nitrile group in polyacrylonitrile polymer chain is a typical strong electron withdrawing group with high electrochemical stability, making polyacrylonitrile polymer an ideal candidate material for preparing solid electrolyte. The application of acrylic fiber in energy storage devices is feasible. The main components of acrylic fiber and polyacrylonitrile are the same, and the cost is relatively low. If the waste clothing acrylic fiber is used as raw material instead of polyacrylonitrile polymer in the energy storage field, the green low-cost and high-value utilization of waste textiles will be realized.

In this study, the researchers simply cleaned and dried the recovered waste acrylic yarn, and then prepared the acrylic solution with the clean acrylic yarn, and then dispersed the lithium lanthanum tantalum zirconium oxide (LLZTO) ceramic nanoparticles in the acrylic solution to prepare the acrylic based ceramic composite electrospinning precursor solution. LLZTO/acrylic nanofiber network with 3D structure was obtained by electrospinning technology as the filling framework of composite solid electrolyte. Through simple liquid phase assembly, researchers can infiltrate polymer solution into composite fiber network to obtain LLZTO/acrylic composite solid electrolyte.

(Source: China Chemical Industry News)