The polyacrylic latex: an efficient water-soluble binder for LiNi1/3Co1/3Mn1/3O2 cathode in li-ion batteries

The polyacrylic latex (LA132) was firstly reported as a water-soluble binder for LiNi 1/3 Co 1/3 Mn 1/3 O 2 (NCM) cathode in Li-ion battery. The electrochemical performances of NCM cathode with LA132 binder were investigated and compared with the conventional water-soluble sodium carboxymethyl cellulose (CMC) and commercial non-aqueous polyvinylidene difluoride (PVDF). NCM cathode with LA132 binder exhibited a much higher specific capacity of 146 mAh g −1 and capacity retention of 96.4 % after 100 cycles as compared with 122 mAh g −1 /88 % and 121 mAh g −1 /75% for the NCM electrode with CMC and PVDF, respectively. In addition, NCM cathode with LA132 binder exhibited better rate capability than that of CMC and PVDF, e.g., retaining 34.3 % capacity of C/5 at 5 C rate as compared with 28.5 and 10.9 % for CMC and PVDF, respectively.