Пожалуйста, используйте этот идентификатор, чтобы цитировать или ссылаться на этот ресурс: http://elar.urfu.ru/handle/10995/141714
Название: Electrodeposition of Silicon Fibers from KI–KF–KCl–K2SiF6 Melt and Their Electrochemical Performance during Lithiation/Delithiation
Авторы: Leonova, A.
Leonova, N.
Minchenko, L.
Suzdaltsev, A.
Дата публикации: 2024
Издатель: Multidisciplinary Digital Publishing Institute (MDPI)
Библиографическое описание: Leonova, A., Leonova, N., Minchenko, L., & Suzdaltsev, A. (2024). Electrodeposition of Silicon Fibers from KI–KF–KCl–K2SiF6 Melt and Their Electrochemical Performance during Lithiation/Delithiation. Electrochem, 5(1), 124-132. https://doi.org/10.3390/electrochem5010008
Аннотация: The possibility of using Si-based anodes in lithium-ion batteries is actively investigated due to the increased lithium capacity of silicon. The paper reports the preparation of submicron silicon fibers on glassy carbon in the KI–KF–KCl–K2SiF6 melt at 720 °C. For this purpose, the parameters of silicon electrodeposition in the form of fibers were determined using cyclic voltammetry, and experimental samples of ordered silicon fibers with an average diameter from 0.1 to 0.3 μm were obtained under galvanostatic electrolysis conditions. Using the obtained silicon fibers, anode half-cells of a lithium-ion battery were fabricated, and its electrochemical performance under multiple lithiations and delithiations was studied. By means of voltametric studies, it is observed that charging and discharging the anode based on the obtained silicon fibers occurs at potentials from 0.2 to 0.05 V and from 0.2 to 0.5 V, respectively. A change in discharge capacity from 520 to 200 mAh g−1 during the first 50 charge/discharge cycles at a charge current of 0.1 C and a Coulombic efficiency of 98–100% was shown. The possibility of charging silicon-based anode samples at charging currents up to 2 C was also noted; the discharge capacity ranged from 25 to 250 mAh g−1. © 2024 by the authors.
Ключевые слова: CAPACITY
ELECTROCHEMICAL PERFORMANCE
ELECTRODEPOSITION
FIBERS
LITHIUM-ION BATTERY
SI-ANODE
SILICON
URI: http://elar.urfu.ru/handle/10995/141714
Условия доступа: info:eu-repo/semantics/openAccess
cc-by
Идентификатор SCOPUS: 85189162660
Идентификатор PURE: 55310658
ISSN: 2673-3293
DOI: 10.3390/electrochem5010008
Располагается в коллекциях:Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC

Файлы этого ресурса:
Файл Описание РазмерФормат 
2-s2.0-85189162660.pdf2,89 MBAdobe PDFПросмотреть/Открыть


Все ресурсы в архиве электронных ресурсов защищены авторским правом, все права сохранены.