Flexible Lead-Free Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> Dielectric Film Capacitor with High Energy Storage Performance

Flexible Lead-Free Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> Dielectric Film Capacitor with High Energy Storage Performance

Ferroelectric thin film capacitors have triggered great interest in pulsed power systems because of their high-power density and ultrafast charge–discharge speed, but less attention has been paid to the realization of flexible capacitors for wearable electronics and power systems. In this work, a fl...

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Autores principales: Wenwen Wang, Jin Qian, Chaohui Geng, Mengjia Fan, Changhong Yang, Lingchao Lu, Zhenxiang Cheng
Formato: article
Lenguaje:EN
Publicado: MDPI AG 2021
Materias:
flexible
film capacitor
Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub>
energy storage properties
Chemistry
QD1-999
Acceso en línea:https://doaj.org/article/b3e97eeaa63c42258a09f21d5a9f36e1
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spelling oai:doaj.org-article:b3e97eeaa63c42258a09f21d5a9f36e12021-11-25T18:32:10ZFlexible Lead-Free Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> Dielectric Film Capacitor with High Energy Storage Performance10.3390/nano111130652079-4991https://doaj.org/article/b3e97eeaa63c42258a09f21d5a9f36e12021-11-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/3065https://doaj.org/toc/2079-4991Ferroelectric thin film capacitors have triggered great interest in pulsed power systems because of their high-power density and ultrafast charge–discharge speed, but less attention has been paid to the realization of flexible capacitors for wearable electronics and power systems. In this work, a flexible Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> thin film capacitor is synthesized on mica substrate. It possesses an energy storage density of <i>W</i><sub>rec</sub> ~ 62 J cm<sup>−3</sup>, combined with an efficiency of <i>η</i> ~ 74% due to the moderate breakdown strength (3000 kV cm<sup>−1</sup>) and the strong relaxor behavior. The energy storage performances for the film capacitor are also very stable over a broad temperature range (−50–200 °C) and frequency range (500 Hz–20 kHz). Moreover, the <i>W</i><sub>rec</sub> and <i>η</i> are stabilized after 10<sup>8</sup> fatigue cycles. Additionally, the superior energy storage capability can be well maintained under a small bending radius (<i>r</i> = 2 mm), or after 10<sup>4</sup> mechanical bending cycles. These results reveal that the Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> film capacitors in this work have great potential for use in flexible microenergy storage systems.Wenwen WangJin QianChaohui GengMengjia FanChanghong YangLingchao LuZhenxiang ChengMDPI AGarticleflexiblefilm capacitorBa<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub>energy storage propertiesChemistryQD1-999ENNanomaterials, Vol 11, Iss 3065, p 3065 (2021)
institution DOAJ
collection DOAJ
language EN
topic flexible
film capacitor
Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub>
energy storage properties
Chemistry
QD1-999
spellingShingle flexible
film capacitor
Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub>
energy storage properties
Chemistry
QD1-999
Wenwen Wang
Jin Qian
Chaohui Geng
Mengjia Fan
Changhong Yang
Lingchao Lu
Zhenxiang Cheng
Flexible Lead-Free Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> Dielectric Film Capacitor with High Energy Storage Performance
description Ferroelectric thin film capacitors have triggered great interest in pulsed power systems because of their high-power density and ultrafast charge–discharge speed, but less attention has been paid to the realization of flexible capacitors for wearable electronics and power systems. In this work, a flexible Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> thin film capacitor is synthesized on mica substrate. It possesses an energy storage density of <i>W</i><sub>rec</sub> ~ 62 J cm<sup>−3</sup>, combined with an efficiency of <i>η</i> ~ 74% due to the moderate breakdown strength (3000 kV cm<sup>−1</sup>) and the strong relaxor behavior. The energy storage performances for the film capacitor are also very stable over a broad temperature range (−50–200 °C) and frequency range (500 Hz–20 kHz). Moreover, the <i>W</i><sub>rec</sub> and <i>η</i> are stabilized after 10<sup>8</sup> fatigue cycles. Additionally, the superior energy storage capability can be well maintained under a small bending radius (<i>r</i> = 2 mm), or after 10<sup>4</sup> mechanical bending cycles. These results reveal that the Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> film capacitors in this work have great potential for use in flexible microenergy storage systems.
format article
author Wenwen Wang
Jin Qian
Chaohui Geng
Mengjia Fan
Changhong Yang
Lingchao Lu
Zhenxiang Cheng
author_facet Wenwen Wang
Jin Qian
Chaohui Geng
Mengjia Fan
Changhong Yang
Lingchao Lu
Zhenxiang Cheng
author_sort Wenwen Wang
title Flexible Lead-Free Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> Dielectric Film Capacitor with High Energy Storage Performance
title_short Flexible Lead-Free Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> Dielectric Film Capacitor with High Energy Storage Performance
title_full Flexible Lead-Free Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> Dielectric Film Capacitor with High Energy Storage Performance
title_fullStr Flexible Lead-Free Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> Dielectric Film Capacitor with High Energy Storage Performance
title_full_unstemmed Flexible Lead-Free Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>/0.4BiFeO<sub>3</sub>-0.6SrTiO<sub>3</sub> Dielectric Film Capacitor with High Energy Storage Performance
title_sort flexible lead-free ba<sub>0.5</sub>sr<sub>0.5</sub>tio<sub>3</sub>/0.4bifeo<sub>3</sub>-0.6srtio<sub>3</sub> dielectric film capacitor with high energy storage performance
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/b3e97eeaa63c42258a09f21d5a9f36e1
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AT chaohuigeng flexibleleadfreebasub05subsrsub05subtiosub3sub04bifeosub3sub06srtiosub3subdielectricfilmcapacitorwithhighenergystorageperformance
AT mengjiafan flexibleleadfreebasub05subsrsub05subtiosub3sub04bifeosub3sub06srtiosub3subdielectricfilmcapacitorwithhighenergystorageperformance
AT changhongyang flexibleleadfreebasub05subsrsub05subtiosub3sub04bifeosub3sub06srtiosub3subdielectricfilmcapacitorwithhighenergystorageperformance
AT lingchaolu flexibleleadfreebasub05subsrsub05subtiosub3sub04bifeosub3sub06srtiosub3subdielectricfilmcapacitorwithhighenergystorageperformance
AT zhenxiangcheng flexibleleadfreebasub05subsrsub05subtiosub3sub04bifeosub3sub06srtiosub3subdielectricfilmcapacitorwithhighenergystorageperformance
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