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High energy density in silver niobate ceramicsстатья Электронная публикация
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus,
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 января 2017 г.
- Авторы: Tian Ye, Jin Li, Hangfeng Zhang, Zhuo Xu, Xiaoyong Wei, Politova E.D., Stefanovich S.Yu, Tarakina Nadezda V., Isaac Abrahams, Haixue Yan
- Журнал: Journal of Materials Chemistry A
- Том: 4
- Номер: 44
- Год издания: 2016
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 17279
- Последняя страница: 17287
- DOI: 10.1039/C6TA06353E
- Аннотация: Solid-state dielectric energy storage is the most attractive and feasible way to store and release high power energy compared to chemical batteries and electrochemical super-capacitors. However, the low energy density (ca. 1 J cm−3) of commercial dielectric capacitors has limited their development. Dielectric materials showing field induced reversible phase transitions have great potential to break the energy storage density bottleneck. In this work, dense AgNbO3ceramic samples were prepared successfully using solid state methods. Ferroelectric measurements at different temperatures reveal evidence of two kinds of polar regions. One of these is stable up to 70 °C, while the other remains stable up to 170 °C. The associated transition temperatures are supported by second harmonic generation measurements on poled samples and are correlated with the occurrence of two sharp dielectric responses. The average unit cell volume is seen to increase with increasing DC field and has been interpreted in terms of increasing levels of structural disorder in the system. At a high electric field the structure becomes ferroelectric with high polarization. This field induced transition exhibits a recoverable energy density of 2.1 J cm−3, which represents one of the highest known values for lead-free bulk ceramics
- Добавил в систему: Стефанович Сергей Юрьевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | статья в формате pdf | AgNbO3-AFE-JMCA.pdf | 5,6 МБ | 16 ноября 2016 [Stefanovich] |