Specific Features of Ion Transport in New Nanocomposite Gel Electrolytes Based on Cross-Linked Polymers and Silica Nanoparicles
- Авторлар: Baymuratova G.R.1, Chernyak A.V.1,2, Slesarenko A.A.1, Tulibaeva G.Z.1, Volkov V.I.1, Yarmolenko O.V.1
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Мекемелер:
- Institute of Problems of Chemical Physics, Russian Academy of Sciences
- Science Research Center, Russian Academy of Sciences
- Шығарылым: Том 55, № 6 (2019)
- Беттер: 529-536
- Бөлім: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/190558
- DOI: https://doi.org/10.1134/S1023193519060041
- ID: 190558
Дәйексөз келтіру
Аннотация
The spesific features of ion transport are studied in the nanocomposite system based on a network matrix synthesized by radical polymerization of polyethylene glycol diacrylate in the presence of liquid aprotic electrolyte containing 1 M LiBF4 in γ-butyrolactone and SiO2 nanopowder. The self-diffusion coefficients measured by 7Li NMR spectroscopy with pulsed field gradient have a maximum at 2 wt % SiO2 nanoparticles. Nanocomposites of the latter composition exhibit the highest cation transport numbers (0.49) and the maximum of conductivity in the temperature interval under study (from –70 to 100°С): 4 mS/cm at 20°С and 1 mS/cm at –70°С. The second conductivity maximum at 6 wt % is characterized merely by the low effective activation energy of conduction. Possible mechanisms are invoked to explain the increase in conductivity. The first mechanism is based on the increase in the number of mobile charge carriers which may be a result of salt dissociation to ions, the second mechanism is associated with the development of a large number of favorable pathways for ion transport.
Авторлар туралы
G. Baymuratova
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Email: oyarm@icp.ac.ru
Ресей, Chernogolovka, Moscow oblast, 142432
A. Chernyak
Institute of Problems of Chemical Physics, Russian Academy of Sciences; Science Research Center, Russian Academy of Sciences
Email: oyarm@icp.ac.ru
Ресей, Chernogolovka, Moscow oblast, 142432; Chernogolovka, Moscow oblast, 142432
A. Slesarenko
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Email: oyarm@icp.ac.ru
Ресей, Chernogolovka, Moscow oblast, 142432
G. Tulibaeva
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Email: oyarm@icp.ac.ru
Ресей, Chernogolovka, Moscow oblast, 142432
V. Volkov
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Email: oyarm@icp.ac.ru
Ресей, Chernogolovka, Moscow oblast, 142432
O. Yarmolenko
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Хат алмасуға жауапты Автор.
Email: oyarm@icp.ac.ru
Ресей, Chernogolovka, Moscow oblast, 142432
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