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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Advanced Materials for Energy Conversion and Storage 2022
Presentation Title Bulk Ferroelectric Metamaterial with Enhanced Piezoelectric and Biomimetic Mechanical Properties from Additive Manufacturing
Author(s) Jun Li
On-Site Speaker (Planned) Jun Li
Abstract Scope Three-dimensional (3D) ferroelectric materials are promising electromechanical building blocks for achieving human-machine interfacing, energy sustainability, and enhanced therapeutics. However, current natural or synthetic materials cannot offer both high piezoelectric responses and desired mechanical toughness at the same time. Here, a nacre-mimetic ferroelectric metamaterial was created with a ceramic-like piezoelectric property and a bone-like fracture toughness through a novel low-voltage-assisted 3D printing technology. The one-step printed bulk structure, consisting of periodically intercalated soft ferroelectric and hard electrode intercalated layers, exhibited a significantly enhanced longitudinal piezoelectric charge coefficient of over 150 pC N-1, as well as a superior fracture resistance of ~ 5.5 MPa·m1/2 more than three times higher than piezo-ceramics. The excellent printability together with the unique combination of both high piezoelectric and mechanical behaviors allowed us to create bone-like structure with tunable anisotropic piezoelectricity and bone-comparable mechanical properties, marking a cornerstone toward manufacturing practical, high-performance, and smart biological systems.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Energy Conversion and Storage, Sustainability

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Effect of Transition Metal Doping on the Electrochemical Properties of B-site Doped Neodymium Nickelate for Reversible Solid Oxide Cells
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Quantifying Triple Phase Boundary Density in Nanocatalyst-infiltrated SOFC Anodes Using 3-D Reconstruction and Scanning Electron Microscopy
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