西安工业大学“知行讲坛”
讲座题目：无铅电介质储能与中子散射(Lead-free dielectric energy storage and neutron scattering)
主 讲 人：Zhilun Lu 教授
讲座时间：2025年10月29日，14:20-15:20
讲座地点：工6-402
主办单位：研究生院
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. Our work proposes a new strategy for tailoring defect behavior in BiFeO3-SrTiO3 (BF-ST) lead-free relaxor ferroelectric ceramics. Additionally, we combined synchrotron X-ray diffraction and transmission electron microscopy data to reveal, from a microscopic to atomic-scale perspective, the intrinsic mechanism of energy storage density optimization in AgNbO3-based antiferroelectric ceramics. These two research efforts provide clear design principles for lead-free ceramics intended for high-energy-density capacitors, supporting sustainable development. Furthermore, 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
个人简介：Dr. Zhilun Lu现任英国利兹大学（University of Leeds）化学与过程工程学院的材料科学与工程本科专业负责人。他的研究聚焦于各类先进功能材料的结构-成分-性能关系，特别侧重于用于能量存储和采集的铁电材料和热电材料。主持了多项英国皇家学会和英国皇家化学会的科研项目。发表了80余篇同行评审论文(包括《自然物理》)，并连续三年(2023-2025年)在材料子领域被评为全球前2%顶尖科学家，在全球314399名作者中排名第3101位。他是英国材料、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，并经常受邀在国际会议上发言。他在多个知名材料科学期刊担任编委，并为《自然物理》和《自然通讯》等高影响力期刊担任同行评审人。
