Paper Title :Enhanced Energy Storage Properties Of Linbo3 Modified BNT-BCT Lead-Free Piezoceramics
Author :Rizwan Ahmed Malik, Ali Hussain, Adnan Maqbool, Arif Zaman, Tae Kwon Song, Won-Jeong Kim, Myong-Ho Kim
Article Citation :Rizwan Ahmed Malik ,Ali Hussain ,Adnan Maqbool ,Arif Zaman ,Tae Kwon Song ,Won-Jeong Kim ,Myong-Ho Kim ,
(2016 ) " Enhanced Energy Storage Properties Of Linbo3 Modified BNT-BCT Lead-Free Piezoceramics " ,
International Journal of Advances in Science, Engineering and Technology(IJASEAT) ,
pp. 48-51,
Volume-4,Issue-3, Spl. Iss-2
Abstract : In the present work, the composition and temperature-dependence energy storage properties of (1–x)
(0.91Na0.5Bi0.5TiO3–0.09Ba0.70Ca0.30TiO3)–xLiNbO3 (abbreviated as BNT–BCT–LN, where x=0–0.04) lead-free
piezoceramics were investigated. The ceramics with x ≤ 0.020 have pure perovskite structure, while a secondary phase
appears in the samples with x ≥ 0.020. X-ray diffraction patterns revealed pseudocubic symmetry for all the studied
compositions. The maximum permitivity temperature (Tm) increased with increasing amount of LiNbO3-modification, but
the values of ferroelectric to relaxor transition temperature (TF-R) and maximum dielectric constant (m) decrease
gradually. LiNbO3 addition interrupted the ferroelectric order of the host BNT–BCT perovskite ceramics, lead to a reduction
in the remnant polarization and coercive field. However, along with this destabilization, a significant enhancements in the
energy storage properties were observed. It was found that the addition of LiNbO3 enhanced the difference between
maximum polarization and remnant polarization that results in the improvement of energy storage properties. For x=0.02
sample, at ferroelectric to ergodic relaxor phase transition, a relatively large recoverable energy density (W = 0.54 J/cm3)
was achieved. These outcomes indicate that the synthesized system might be a promising environmental friendly candidate
for energy storage capacitor applications.
Keywords- Lead-free, piezoelectricity, Ferroelectricity, Energy Storage, Capacitors
Type : Research paper
Published : Volume-4,Issue-3, Spl. Iss-2
DOIONLINE NO - IJASEAT-IRAJ-DOIONLINE-5670
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Published on 2016-10-22 |
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