Investigations on high energy lithium-ion batteries with aqueous binder

An aqueous binder, fluorine acrylic hybrid latex (TRD 202A), is utilized as the binder to fabricate a cathode electrode using a lithium manganese rich composite (LMR-NMC) as the active material. The derived Li/LMR-NMC half cells have advantages of more than 240 mAh/g specific capacity and low impedance of less than 50 Ω cm2. Differential Scanning Calorimeter (DSC) results indicate that the electrode with aqueous binder shows improved thermal stability compared with polyvinylidene difluoride (PVDF). Furthermore, the cathode electrode with aqueous binder is tested against the graphite electrodes with another aqueous binder, Styrene-Butadiene Rubber (SBR). The evaluation results of graphite/LMR-NMC full cells show that full cells with aqueous binders in both anodes and cathodes inherit almost all advantages of Li/LMR-NMC half cells, except the long cycle life.