TY - JOUR

T1 - Hybrid Nanocomposite Solid Electrolytes (n-C4H9)4NBF4-MgO

AU - Mateyshina, Yulia

AU - Stebnitskii, Ivan

AU - Shivtsov, Danil

AU - Ilyina, Ekaterina

AU - Ulihin, Artem

AU - Bukhtiyarov, Andrey

AU - Uvarov, Nikolai

N1 - Funding: This research was funded by the Russian Science Foundation, project 20-13-00302-p.

PY - 2023/6/30

Y1 - 2023/6/30

N2 - Hybrid nanocomposite materials Bu4NBF4-MgO were obtained using a nanocrystalline MgO with a specific surface area of 324 m2/g and the grains size of 5.1 nm. As a result of the strong adhesion, the salt transforms into an interface-stabilized amorphous state within the thin layer near the interface. The analysis of the DSC data allowed one to estimate the concentration and the thickness of this amorphous layer as 4.8 nm. The amorphous interface phase has an enhanced ionic conductivity. As a result, conductivity of the nanocomposite increases with the concentration of the amorphous phase and reaches 1.1 × 10-3 S/cm at 150 °C at a concentration of the MgO additive x = 0.90 corresponding to the maximum content of the amorphous phase. The conductivity of the nanocomposite is by three orders of magnitude higher than the conductivity of pure Bu4NBF4. The nanocomposites are electrochemically stable up to 2.5 V. At high concentrations of MgO when the total volume of the salt is small the composites become nano- and mesoporous.

AB - Hybrid nanocomposite materials Bu4NBF4-MgO were obtained using a nanocrystalline MgO with a specific surface area of 324 m2/g and the grains size of 5.1 nm. As a result of the strong adhesion, the salt transforms into an interface-stabilized amorphous state within the thin layer near the interface. The analysis of the DSC data allowed one to estimate the concentration and the thickness of this amorphous layer as 4.8 nm. The amorphous interface phase has an enhanced ionic conductivity. As a result, conductivity of the nanocomposite increases with the concentration of the amorphous phase and reaches 1.1 × 10-3 S/cm at 150 °C at a concentration of the MgO additive x = 0.90 corresponding to the maximum content of the amorphous phase. The conductivity of the nanocomposite is by three orders of magnitude higher than the conductivity of pure Bu4NBF4. The nanocomposites are electrochemically stable up to 2.5 V. At high concentrations of MgO when the total volume of the salt is small the composites become nano- and mesoporous.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85164845584&origin=inward&txGid=2392c3c2fdc474a0b44e098483cea59c

UR - https://www.mendeley.com/catalogue/afda79b3-e09f-3c14-ab1d-7ae2fc392467/

U2 - 10.3390/ijms241310949

DO - 10.3390/ijms241310949

M3 - Article

C2 - 37446124

VL - 24

JO - International Journal of Molecular Sciences

JF - International Journal of Molecular Sciences

SN - 1661-6596

IS - 13

M1 - 10949

ER -