TY - JOUR

T1 - Impedance of LiFe0.4Mn0.6PO4 Electrodes with Combined Conducting Polymer Binder of PEDOT:PSS and Carboxymethyl Cellulose

AU - Apraksin, R. V.

AU - Eliseeva, S. N.

AU - Kamenskii, M. A.

AU - Tolstopyatova, E. G.

AU - Lang, G. G.

AU - Kondrat’ev, V. V.

N1 - Apraksin, R.V., Eliseeva, S.N., Kamenskii, M.A. et al. Impedance of LiFe0.4Mn0.6PO4 Electrodes with Combined Conducting Polymer Binder of PEDOT:PSS and Carboxymethyl Cellulose. Russ J Electrochem 55, 1047–1057 (2019). https://doi.org/10.1134/S1023193519110028

PY - 2019/11/1

Y1 - 2019/11/1

N2 - Abstract: This work studies the electrochemical properties of cathodic materials for lithium–ion batteries based on mixed lithium–iron–manganese phosphate LiFe 0.4Mn 0.6PO 4 (LFMP) obtained using a conducting binder containing poly-3,4-ethylenedioxythiophene : polystyrenesulfonate (PEDOT:PSS) and carboxymethyl cellulose (CMC). The results are compared with those for the material based on LiFe 0.4Mn 0.6PO 4 manufactured with the conventional polyvinylidene fluoride (PVDF) binder. The electrode material with the PEDOT:PSS/CMC binder manifests enhanced functional characteristics as compared to electrodes with the conventional binder. It is found that replacement of the conventional binder by the combined conducting PEDOT:PSS/CMC binder in the LFMP-based cathodic material results in an increase in the specific capacity of the cathodic material. Particularly noticeable advantages of the material with respect to specific capacity are observed at high currents (up to 10 C), which can be explained by the increasing rate of the processes of material recharge due to a significant decrease in the charge transfer resistance and an increase in the apparent diffusion coefficient of the lithium ions.

AB - Abstract: This work studies the electrochemical properties of cathodic materials for lithium–ion batteries based on mixed lithium–iron–manganese phosphate LiFe 0.4Mn 0.6PO 4 (LFMP) obtained using a conducting binder containing poly-3,4-ethylenedioxythiophene : polystyrenesulfonate (PEDOT:PSS) and carboxymethyl cellulose (CMC). The results are compared with those for the material based on LiFe 0.4Mn 0.6PO 4 manufactured with the conventional polyvinylidene fluoride (PVDF) binder. The electrode material with the PEDOT:PSS/CMC binder manifests enhanced functional characteristics as compared to electrodes with the conventional binder. It is found that replacement of the conventional binder by the combined conducting PEDOT:PSS/CMC binder in the LFMP-based cathodic material results in an increase in the specific capacity of the cathodic material. Particularly noticeable advantages of the material with respect to specific capacity are observed at high currents (up to 10 C), which can be explained by the increasing rate of the processes of material recharge due to a significant decrease in the charge transfer resistance and an increase in the apparent diffusion coefficient of the lithium ions.

KW - PEDOT:PSS

KW - binder material

KW - carboxymethyl cellulose

KW - conducting polymer

KW - cyclic voltammetry

KW - electrochemical impedance spectroscopy

KW - lithium–ion batteries

KW - lithium–iron–manganese phosphate

UR - http://www.scopus.com/inward/record.url?scp=85076341260&partnerID=8YFLogxK

U2 - 10.1134/S1023193519110028

DO - 10.1134/S1023193519110028

M3 - Article

VL - 55

SP - 1047

EP - 1057

JO - Russian Journal of Electrochemistry

JF - Russian Journal of Electrochemistry

SN - 1023-1935

IS - 11

ER -