High Performance Anode Binder

Abstract

Binders are inactive but necessary component of the electrodes and without using a proper binder, the performance of LIBs would prematurely degrade. A well-designed binder allows to increase the electrode energy density by reducing the binder demand, as well as increasing the cycle-life by maintaining an adequate mechanical integrity and ionic mobility within the electrode.This poster will present a newly designed high-performance anode binder by Arkema. IncellionTM EL 1061 is a high purity WB binder, could overcome the limitations of traditional binders, and allows to maximizing the performance of conventional anodes –including graphite loading of > 97%, first cycle efficiency of > 93%, high C-rate capability of 2C/0.2C of > 96.5%, and capacity retention of > 92% after 500-cycles in 18650 cells- without a need to change the anode design. Moreover, double-sided anodes of > 35 mg/cm2 loadings were successfully fabricated using this high-performance binder and tested in 75 Ah high energy density pouch cells needed for demanding applications.