High energy storage properties of calcium-doped barium titanate thin films with high breakdown field strength

Zhao, Tingyu; Ye, Yaosen; Guo, Kaixin; Cui, Ruirui; Zhang, Min; Wang, Xu; Zhang, Beiqiao; Zhang, Jun; Deng, Chaoyong

doi:10.1016/j.jallcom.2023.172487

Cited by 14 publications

(1 citation statement)

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“…18 Furthermore, a Wrec of 52.4 J cm −3 with 72.3% η has been reported at 300 K on interface engineered Ba 0.7 Ca 0.3 TiO 3 /BaZr 0.2 Ti 0.8 O 3 multilayer ferroelectrics. 19 However, pure BTO is reported to exhibit a Wrec of 5.1 J cm −3 with a η of 77% at 300 K. 20 The poor energy storage performance of BTO films is attributed to the defects rendered by the lower growth kinetics pertaining to the film growth at temperatures far below the melting point. However, better quality BTO based films are realized by Bi substitution, where the eutectic point between Bi 2 O 3 and TiO 2 achieved at reduced temperature could favor enhanced growth kinetics.…”

Section: Introductionmentioning

confidence: 99%

Lead-free BaTiO3-based relaxor ferroelectric thin film rendering rapid discharge rate for pulsed power energy application

Karmegam,

Murugavel

2024

APL Energy

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Ferroelectric thin film capacitors have large application potential in pulsed-power electronic and electrical systems due to their high-power density and rapid discharge capabilities. Although lead-based dielectrics are promising, the pursuit of eco-friendly, lead-free alternatives is gaining research attention. Here, the Bi and Li co-doped BaTiO3 thin film exhibiting relaxor ferroelectric properties was investigated for its energy storage properties. The fabricated polycrystalline Ba0.85(Bi0.5Li0.5)0.15TiO3 thin film by pulsed laser deposition revealed good breakdown strength (∼4 MV cm−1), a slim ferroelectric loop, and low leakage characteristics suitable for energy storage applications. The film exhibits a significant value of recoverable energy density (∼70 J cm−3) with better frequency and thermal stability. Notably, the better overall performance parameters of the film, including a sizable power density (261 MW cm−3) and a fast discharge rate (150 ns), along with good energy density and breakdown strength, make the material suitable for pulsed-power energy applications.

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Section: Introductionmentioning

confidence: 99%