报告题目：Lead-free dielectric energy storage and neutron scattering

报告人：Zhilun Lu (陆智伦) 教授 （英国利兹大学）

报告时间：2025年10月28日（星期二） 上午 10：00

报告地点：致知楼3328

报告摘要：

Dielectric capacitors are rechargeable, passive electronic components that can quickly store and release electrical energy. They are among the most produced and widely used capacitors. With annual production in the hundreds of billions, their applications span smart grids, electronic circuits, electric vehicles, and pulse power electronic equipment. To meet the growing energy storage demands and miniaturization requirements of modern electronic devices, developing high-performance dielectric ceramic materials for capacitors is crucial. While lead-based ceramic materials have demonstrated excellent energy storage performance, their toxicity necessitates the development of environmentally friendly, lead-free alternatives. The work proposes a new strategy for tailoring defect behavior in BiFeO₃-SrTiO₃ (BF-ST) lead-free relaxor ferroelectric ceramics. Synchrotron X-ray diffraction and transmission electron microscopy data were combined to reveal, from a microscopic to atomic-scale perspective, the intrinsic mechanism of energy storage density optimization in AgNbO₃-based antiferroelectric ceramics. Neutron scattering is a powerful experimental technique capable of probing the microstructure and dynamical behavior of materials. This report will use thermoelectric materials and magnetic materials as examples to discuss key applications of neutron scattering in condensed matter physics research.

报告人简介：

Dr. Zhilun Lu (陆智伦)现任英国利兹大学（University of Leeds）教授，为材料科学与工程本科专业负责人。现为英国材料、矿物和矿业学会(IOM3)、英国皇家化学会和美国化学会的专业会员；在多个知名材料科学类期刊担任编委。他的研究聚焦于各类先进功能材料的结构-成分-性能关系，侧重于用于能量存储和采集的铁电材料和热电材料研究。主持了多项英国皇家学会和英国皇家化学会的科研项目；在Nature Physics等期刊发表学术论文80余篇；多次受邀在国际会议上做报告。2023-2025年连续三年在材料领域被评为全球前2%顶尖科学家，在全球314399名作者中排名第3101位。