TY - JOUR

T1 - Effect of Nanodiamond Additives on the Ionic Conductivity of the (C2H5)3CH3NBF4 Organic Salt

AU - Alekseev, D. V.

AU - Mateyshina, Yu G.

AU - Uvarov, N. F.

N1 - Funding Information: This work was supported by the Russian Science Foundation, project no. 20-13-00302. Publisher Copyright: © 2022, Pleiades Publishing, Ltd.

PY - 2022/7

Y1 - 2022/7

N2 - The paper presents studies of the transport and electrochemical characteristics of solid composite electrolytes (1 – x)(C2H5)3CH3NBF4–xCND (where CND is the UDA-С nanosized diamonds with Ss = 300 ± 20 m2/g, 0 < x < 1). The addition of a nanodiamonds inert additive is shown to lead to an increase in the electrical conductivity of the composite electrolyte by 2 orders of magnitude up to 1.7 × 10–3 S/cm at 200°C for x = 0.98. The theoretical dependences describe well the experimental data over the 0 < x < 0.98 concentration range at temperatures of 25–200°C. The stability of composite materials in a C/0.6(C2H5)3CH3NBF4–0.4CND/C cell was studied by cyclic voltammetry. The fundamental possibility of using the composite solid electrolytes with nanodiamonds additives in electrochemical devices is substantiated by the example of a C/0.6(C2H5)3CH3NBF4–0.4CND/C solid-state supercapacitor. Thus, it was demonstrated that nanodiamonds can be considered as an effective non-oxide additive in composite solid organic electrolytes used in electrochemical devices.

AB - The paper presents studies of the transport and electrochemical characteristics of solid composite electrolytes (1 – x)(C2H5)3CH3NBF4–xCND (where CND is the UDA-С nanosized diamonds with Ss = 300 ± 20 m2/g, 0 < x < 1). The addition of a nanodiamonds inert additive is shown to lead to an increase in the electrical conductivity of the composite electrolyte by 2 orders of magnitude up to 1.7 × 10–3 S/cm at 200°C for x = 0.98. The theoretical dependences describe well the experimental data over the 0 < x < 0.98 concentration range at temperatures of 25–200°C. The stability of composite materials in a C/0.6(C2H5)3CH3NBF4–0.4CND/C cell was studied by cyclic voltammetry. The fundamental possibility of using the composite solid electrolytes with nanodiamonds additives in electrochemical devices is substantiated by the example of a C/0.6(C2H5)3CH3NBF4–0.4CND/C solid-state supercapacitor. Thus, it was demonstrated that nanodiamonds can be considered as an effective non-oxide additive in composite solid organic electrolytes used in electrochemical devices.

KW - composite solid electrolytes

KW - ionic conductivity

KW - triethylmethylammonium tetrafluoroborate

UR - http://www.scopus.com/inward/record.url?scp=85134531521&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/8455329e-354b-326d-9eca-e3e4c0ed22e4/

U2 - 10.1134/S1023193522070035

DO - 10.1134/S1023193522070035

M3 - Article

AN - SCOPUS:85134531521

VL - 58

SP - 594

EP - 599

JO - Russian Journal of Electrochemistry

JF - Russian Journal of Electrochemistry

SN - 1023-1935

IS - 7

ER -