|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
Electrochemical Activity of a Ni2+/Ni3+ Redox-Couple in Polyanionic Cathode Materials of Different Structure Typesстатья
- Авторы: Drozhzhin O.A., Alekseeva A.M., Tyablikov O.A., Marenko A.P., Antipov E.V.
- Журнал: Russian Journal of Electrochemistry
- Том: 58
- Номер: 11
- Год издания: 2022
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 998
- Последняя страница: 1007
- DOI: 10.1134/s1023193522110052
- Аннотация: Electrochemical properties of nickel-containing polyanionic cathode materials for metal-ion batteries crystallized in three structure types (olivine, NASICON, and α-CrPO4) are studied. The subjects of the research are: LiFe0.5Ni0.5PO4 (olivine), Na1 + 2xNixZr2 – x(PO4)3 (NASICON), as well as Na2Ni2Cr(PO4)3 and Na2Ni2Al(PO4)3 (α-CrPO4). The samples are prepared by different synthetic methods; their phase composition, crystal structure, and morphology are studied. The LiFe0.5Ni0.5PO4- and Na1 + 2xNixZr2 – x(PO4)3-based materials are shown undergoing irreversible structure changes during the first charge with significant irreversible electrochemical capacity (~70−100 mA h g–1). During the cycling of Na2Ni2Cr(PO4)3 and Na2Ni2Al(PO4)3 in sodium half-cell, only Cr3+/Cr4+-redox-couple demonstrated electrochemical activity. The correlation of structure features and electrochemical properties of the studied materials is discussed.
- Добавил в систему: Дрожжин Олег Андреевич