TY - JOUR

T1 - Transport Properties of LiClO4–Nanodiamond Composites

AU - Alekseev, D. V.

AU - Mateyshina, Yu G.

AU - Uvarov, N. F.

N1 - Publisher Copyright: © 2021, Pleiades Publishing, Ltd.

PY - 2021/10

Y1 - 2021/10

N2 - The transport properties of solid composite electrolytes (1 – x)LiClO4–xCND (where СND are “UDA-S” nanodispersed diamonds with a specific surface area Ssp = 300 ± 20 m2/g, 0 < x < 1) are studied. It is found that an addition of CND leads to an increase of the composite conductivity (σ) by 3–5 orders of magnitude to 8 × 10–4 S/cm at T = 100°C at x = 0.9. The experimental data in the concentration range 0.1 < x < 0.8 at the temperatures of 50–200°C are described by the theoretical dependences, which ore obtained using the modified mixing equation. Using the method of cycling voltammetry in the E/0.2LiClO4–0.8CND/E cells (where E is Ag, Cu, Ni, and graphite), it is shown that this composite solid electrolyte is electrochemically stable in the voltage range up to 3.5 V. By the examples of solid-state supercapacitor C/0.2LiClO4–0.8CND/C and solid-state lithium-ion battery LiMn2O4/0.2LiClO4–0.8CND/LiMn2O4, it is shown that, in principle, the composite solid electrolytes with the nanodiamond additives can be used in the electrochemical devices. Thus, it is demonstrated that nanodispersed diamonds can be considered as an effective non-oxide additive in the composite solid electrolytes based on lithium perchlorate.

AB - The transport properties of solid composite electrolytes (1 – x)LiClO4–xCND (where СND are “UDA-S” nanodispersed diamonds with a specific surface area Ssp = 300 ± 20 m2/g, 0 < x < 1) are studied. It is found that an addition of CND leads to an increase of the composite conductivity (σ) by 3–5 orders of magnitude to 8 × 10–4 S/cm at T = 100°C at x = 0.9. The experimental data in the concentration range 0.1 < x < 0.8 at the temperatures of 50–200°C are described by the theoretical dependences, which ore obtained using the modified mixing equation. Using the method of cycling voltammetry in the E/0.2LiClO4–0.8CND/E cells (where E is Ag, Cu, Ni, and graphite), it is shown that this composite solid electrolyte is electrochemically stable in the voltage range up to 3.5 V. By the examples of solid-state supercapacitor C/0.2LiClO4–0.8CND/C and solid-state lithium-ion battery LiMn2O4/0.2LiClO4–0.8CND/LiMn2O4, it is shown that, in principle, the composite solid electrolytes with the nanodiamond additives can be used in the electrochemical devices. Thus, it is demonstrated that nanodispersed diamonds can be considered as an effective non-oxide additive in the composite solid electrolytes based on lithium perchlorate.

KW - composite solid electrolytes

KW - ionic conductivity

KW - lithium perchlorate

UR - http://www.scopus.com/inward/record.url?scp=85118731398&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/ff7a62d1-ce5e-365b-89cc-e308e38e16b4/

U2 - 10.1134/S1023193521100037

DO - 10.1134/S1023193521100037

M3 - Article

AN - SCOPUS:85118731398

VL - 57

SP - 1037

EP - 1045

JO - Russian Journal of Electrochemistry

JF - Russian Journal of Electrochemistry

SN - 1023-1935

IS - 10

M1 - 7

ER -