Campus Units

Materials Science and Engineering

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

2018

Journal or Book Title

Journal of Materials Chemistry A

Volume

6

Issue

9

First Page

4133

Last Page

4144

DOI

10.1039/C7TA09857J

Abstract

Lead-free ceramics with high recoverable energy density (Wrec) and energy storage efficiency (η) are attractive for advanced pulsed power capacitors to enable greater miniaturization and integration. In this work, dense bismuth ferrite (BF)-based, lead-free 0.75(Bi1−xNdx)FeO3-0.25BaTiO3 (BNxF-BT) ceramics and multilayers were fabricated. A transition from a mixed pseudocubic and R3c to a purely pseudocubic structure was observed as x increased with the optimum properties obtained for mixed compositions. The highest energy densities, W ∼ 4.1 J cm−3 and Wrec ∼ 1.82 J cm−3, were achieved for BN15F-BT, due to the enhanced breakdown field strength (BDS ∼ 180 kV cm−1) and large maximum polarization (Pmax ∼ 40 μC cm−2). The multilayers of this composition possessed both a high Wrec of 6.74 J cm−3 and η of 77% and were stable up to 125 °C. Nd doped BF-based ceramics with enhanced BDS and large Wrec are therefore considered promising candidates for lead-free energy storage applications.

Comments

This is a manuscript of an article published as Wang, Dawei, Zhongming Fan, Di Zhou, Amir Khesro, Shunsuke Murakami, Antonio Feteira, Quanliang Zhao, Xiaoli Tan, and Ian M. Reaney. "Bismuth ferrite-based lead-free ceramics and multilayers with high recoverable energy density." Journal of Materials Chemistry A 6, no. 9 (2018): 4133-4144. DOI: 10.1039/C7TA09857J. Posted with permission.

Copyright Owner

The Royal Society of Chemistry

Language

en

File Format

application/pdf

Published Version

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