Improved Effect of Water-Soluble Binder NV-1A on the Electrochemical Proprieties LFP Electrodes

The electrochemical properties of batteries consist of LiFePO4 (LFP) with the NV-1A binder were studied in depth. It was shown that SEI layer for NV-1A formed on the electrodes has a lower resistance as compared with PVDF. It is known that the increase discharge current loads lead to decrease an average voltage and the specific capacity of a battery. However, in the case of NV-1A binder the changing average discharge voltage and the specific capacity at the increasing current loads is not significant. Thus, the capacity fall is 18 and 220 mA h for NV-1A and PVDF binders for LIBs consist from LFP cathode material with different binders with an increase in discharge currents from 0.1 to 2.0 C, respectively. It should be noticed that the electrochemical properties of the LFP–NV-1A system were completely studied the first time not only in half-cells but in the full battery complete state.