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- Title
High-energy storage performance in lead-free lanthanum and lithium co-doped BaTi<sub>0.96</sub>Ni<sub>0.04</sub>O<sub>3</sub> ferroelectric ceramics.
- Authors
Ramay, Shahid M.; Kassim, Hamoud; Al Zayed, Nasser Saleh; Shahabuddin, Mohammed; Ali, Syed Mansoor; Mahmood, Asif
- Abstract
Relaxor ferroelectric materials with high-energy density and efficiency are suitable for energy-storage applications. The multifaceted effort to develop these capacitors focuses on improving their energy density and storage efficiency and ensuring their reliable operation over various temperatures and frequencies. Accordingly, a co-doping strategy has been proposed to achieve high energy-storage performance of the BaTiO3 ceramics. Using the conventional solid-state reaction method, we synthesized the La3+ and Li+ co-doped BaTi0.96Ni0.04O3 using the general formula Ba(1–x)[La0.50,Li0.50]xTi0.96Ni0.04O3 (2% ≤ x ≤ 8%) abbreviated as BLLNTx ceramics. A relaxor ferroelectric has been obtained by co-doping of La3+ and Li+ into BT lattice. As a result, the remnant polarization decreased, leading to high energy-storage density and high-energy efficiency. The La3+ and Li+ co-doping BNT ceramics display a high energy-storage density of Wre = 0.685 J/cm3 and high-energy efficiency of over 93% under a driving electric field of 110 kV/cm. Meanwhile, the superior stability of the hysteresis loop at the frequency (1–50 Hz) and temperature (25–55 °C) is also observed. From the obtained results, we believe that La3+ and Li+-modified BNT ceramics may be a promising candidate for applications of lead-free energy-storage capacitors.
- Subjects
FERROELECTRIC ceramics; CERAMICS; DOPING agents (Chemistry); LANTHANUM; FERROELECTRIC materials; LEAD titanate; ENERGY density
- Publication
Applied Physics A: Materials Science & Processing, 2022, Vol 128, Issue 10, p1
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-022-06024-8