Speaker

Personal Biography：

Ph.D. in Material Science and Engineering from Xi’an Jiaotong University in 2014. Technical Director in Huitian New Materials Co., Ltd. Research fields: Development and manufacturing of adhesives (or binder), including polyurethane and polyacrylate series, applied for lithium-ion batteries, electronic devices and appliances fields.

Presentation title：
Cost Efficiency and Performance Combined: The Application of PAA in Lithium-Ion Battery Manufacturing.

Recently, with the increasing demand for high energy density and ultra fast charging of lithium batteries, more and more research has focused on the use of binders for active materials. This article focuses on our research results on water-based PAAs copolymers as anode electrode binder for LIBs. We prepared copolymer aqueous solutions with high molecular weight through copolymerization of monomers such as acrylic acid and acrylonitrile. Due to the presence of a large number of carboxyl and cyanide groups, PAAs products endow the electrode with high adhesive strength, which can reduce the amount of adhesive used and thereby improve the energy density of the battery. At the same time, strong electronegative groups have lone pair electrons and can chelate with lithium ions, which is conducive to the migration of lithium ions. Especially at low temperatures, it can effectively reduce the interface transmission resistance and improve the dynamic performance of batteries. In addition, PAAs have a stable physical and mechanical structure, which can give the battery a longer cycle life, especially when adding some silicon materials to the negative electrode material, it can effectively alleviate the damage of the electrode structure. Therefore, PAAs negative electrode bonding agents are increasingly being used, whether in power batteries or energy storage batteries.

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