|
ИСТИНА |
Войти в систему Регистрация |
Интеллектуальная Система Тематического Исследования НАукометрических данных |
||
Development of vanadium-based polyanion positive electrode active materials for high-voltage sodium-based batteriesстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Shraer Semyon D., Luchinin Nikita D., Trussov Ivan A., Aksyonov Dmitry A., Morozov Anatoly V., Ryazantsev Sergey V., Iarchuk Anna R., Morozova Polina A., Nikitina Victoria A., Stevenson Keith J., Antipov Evgeny V., Abakumov Artem M., Fedotov Stanislav S.
- Журнал: Nature communications
- Том: 13
- Номер: 1
- Год издания: 2022
- Издательство: Nature Pub. Group
- Местоположение издательства: United Kingdom
- Номер статьи: 4097
- DOI: 10.1038/s41467-022-31768-5
- Аннотация: Polyanion compounds offer a playground for designing prospective electrode active materials for sodium-ion storage due to their structural diversity and chemical variety. Here, by combining a NaVPO4F composition and KTiOPO4-type framework via a low-temperature (e.g., 190 °C) ion-exchange synthesis approach, we develop a high-capacity and high-voltage positive electrode active material. When tested in a coin cell configuration in combination with a Na metal negative electrode and a NaPF6-based non-aqueous electrolyte solution, this cathode active material enables a discharge capacity of 136 mAh g−1 at 14.3 mA g−1 with an average cell discharge voltage of about 4.0 V. Furthermore, a specific discharge capacity of 123 mAh g−1 at 5.7 A g−1 is also reported for the same cell configuration. Through ex situ and operando structural characterizations, we also demonstrate that the reversible Na-ion storage at the positive electrode occurs mostly via a solid-solution de/insertion mechanism.
- Добавил в систему: Федотов Станислав Сергеевич