Effects of Structure and Properties of Polar Polymeric Binders on Lithium-ion Batteries

Abstract

Binders have a great impact on the performance of lithium-ion batteries, although small doses of binder is applied. The traditional binder poly (vinylidene fluoride) cannot meet the requirements of modern lithium-ion batteries, especially those with high specific capacity, because it interacts with electrode materials through weak Van de Waals force. The surfaces of most electrode materials have polar groups which can strongly interact with polar polymeric binders. Therefore, the polar polymeric binders have been paid much attention, recently. Many factors of polar polymeric binders influence the properties of lithium-ion batteries. This review mainly focuses on the impacts of structure properties of polar polymeric binders on lithium-ion batteries, including structural feature, adhesiveness, mechanical properties, conductivity, and other properties Besides, we propose the strategies of designing next-generation binders for lithium-ion batteries from molecular level, and claim the future direction and prospects of the binders.