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Perovskite Sr-x(Bi1...
Perovskite Sr-x(Bi1-xNa0.97-xLi0.03)(0.5)TiO3 ceramics with polar nano regions for high power energy storage
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- Wu, Jiyue (författare)
- Queen Mary Univ London, Sch Engn & Mat Sci, Mile End Rd, London E1 4NS, England
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- Mahajan, Amit (författare)
- Queen Mary Univ London, Sch Engn & Mat Sci, Mile End Rd, London E1 4NS, England
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- Riekehr, Lars (författare)
- Uppsala universitet,Fasta tillståndets elektronik
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- Zhang, Hangfeng (författare)
- Queen Mary Univ London, Sch Biol & Chem Sci, Mile End Rd, London E1 4NS, England
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- Yang, Bin (författare)
- Univ Chester, Fac Sci & Engn, Dept Elect & Elect Engn, Thornton Sci Pk, Chester CH2 4NU, Cheshire, England
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- Meng, Nan (författare)
- Queen Mary Univ London, Sch Engn & Mat Sci, Mile End Rd, London E1 4NS, England
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- Zhang, Zhen, 1979- (författare)
- Uppsala universitet,Fasta tillståndets elektronik
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- Yan, Haixue (författare)
- Queen Mary Univ London, Sch Engn & Mat Sci, Mile End Rd, London E1 4NS, England
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(creator_code:org_t)
- ELSEVIER SCIENCE BV, 2018
- 2018
- Engelska.
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Ingår i: Nano Energy. - : ELSEVIER SCIENCE BV. - 2211-2855 .- 2211-3282. ; 50, s. 723-732
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Dielectric capacitors are very attractive for high power energy storage. However, the low energy density of these capacitors, which is mainly limited by the dielectric materials, is still the bottleneck for their applications. In this work, lead-free single-phase perovskite Srx(Bi1-xNa0.97-xLi0.03)(0.5)TiO3 (x = 0.30 and 0.38) bulk ceramics, prepared using solid-state reaction method, were carefully studied for the dielectric capacitor application. Polar nano regions (PNRs) were created in this material using co-substitution at A-site to enable relaxor behaviour with low remnant polarization (P-r) and high maximum polarization (P-max). Moreover, P-max was further increased due to the electric field induced reversible phase transitions in nano regions. Comprehensive structural and electrical studies were performed to confirm the PNRs and reversible phase transitions. And finally a high energy density (1.70 J/cm(3)) with an excellent efficiency (87.2%) was achieved using the contribution of field-induced rotations of PNRs and PNR-related reversible transitions in this material, making it among the best performing lead-free dielectric ceramic bulk material for high energy storage.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Relaxor Ferroelectric
- Dielectric
- Polar Nano Regions
- Energy Storage
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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