Synthesis and Characterization of KNN Modified BNT-ST Ceramics for Energy Storage Applications
| dc.contributor.author | Thongmee, Navavan | |
| dc.contributor.author | Klaytae, Thanawat | |
| dc.contributor.author | Vittayakorn, Naratip | |
| dc.contributor.author | Bongkarn, Theerachai | |
| dc.contributor.author | Sumang, Rattiphorn | |
| dc.date.accessioned | 2026-08-06T10:30:52Z | |
| dc.date.available | 2026-08-06T10:30:52Z | |
| dc.date.issued | 2021-01-01 | |
| dc.description.abstract | Lead-free [(0.76-x)Bi<inf>0.5</inf>Na<inf>0.5</inf>TiO<inf>3</inf>–0.24SrTiO<inf>3</inf>–x(K<inf>0.5</inf>Na<inf>0.5</inf>)NbO<inf>3</inf>; BNT-ST-KNN] ceramics with x = 0, 0.03, 0.05, 0.07, 0.10, 0.15 wt.% were synthesized by using a solid-state reaction method. The effect of x content on phase, microstructure electrical and energy density properties was investigated. The samples were analyzed by X-ray diffraction (XRD) and the XRD patterns were fitted using the Rietveld refinement. The grain growth is obviously inhibited and smaller grains are formed in the ceramic samples at a high concentration of x. Dielectric study confirmed relax or nature with a drastic decrease of T <inf>max</inf> with the increase of x content in BNT-ST-KNN system. The maximum density (ρ = 5.42 (Formula presented.) 0.13 g/cm<sup>3</sup>), highest dielectric constant (ε<inf>r</inf> =3300) with tanδ∼0.05, high recoverable energy storage density (W <inf>rec</inf>=0.16 J/cm<sup>3</sup>) with energy storage efficiency of (η = 64) were obtained in x = 0.03 wt.% ceramic samples, which suggested its usefulness for energy-storage capacitor applications. | |
| dc.identifier.citation | Integrated Ferroelectrics, 223(1), 235-245, 2021 | |
| dc.identifier.doi | 10.1080/10584587.2021.1964302 | |
| dc.identifier.issn | 10584587 | |
| dc.identifier.other | 2-s2.0-85122098395 | |
| dc.identifier.uri | https://dspace.kmitl.ac.th/handle/123456789/11568 | |
| dc.source | Integrated Ferroelectrics | |
| dc.subject | BNT-ST-KNN | |
| dc.subject | dielectric properties | |
| dc.subject | Energy storage density | |
| dc.subject | lead-free | |
| dc.title | Synthesis and Characterization of KNN Modified BNT-ST Ceramics for Energy Storage Applications | |
| dc.type | Article |