Abstract
BaTiO3-based materials show great promise for energy storage capacitors, but their low breakdown strength and high remnant polarization currently result in relatively low energy density. Here, we report a novel (1-x)BaTiO3-xBi(Li0.5Ta0.5)O3 (0.06 ≤ x ≤ 0.12, BT-xBLT) lead-free ceramic with electric field (E) ∼ 280 kV cm-1, discharge energy density (We) ∼ 2.2 J cm-3, charge-discharge efficiency (η) > 89% that is thermally stable up to 160 °C and with a fast discharge time (≤0.5 μs). Multilayers of compositions with x = 0.1 also exhibited high We = 4.05 J cm-3 and η = 95.5%, demonstrating their potential for energy storage.
| Original language | English |
|---|---|
| Pages (from-to) | 5016-5023 |
| Number of pages | 8 |
| Journal | ACS Applied Energy Materials |
| Volume | 1 |
| Issue number | 9 |
| DOIs | |
| State | Published - 24 Sep 2018 |
Keywords
- BaTiO
- capacitors
- ceramics
- dielectrics
- energy storage
- multilayers