CAREER: Understanding Mechanisms that Generate Defects in the Fabrication of Functional Materials for Energy Systems

职业：了解能源系统功能材料制造中产生缺陷的机制

• 批准号: 0953399
• 负责人: Tequila Harris
• 金额: $ 40万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0953399&HistoricalAwards=false
• 关键词: CAREER; Understanding; Mechanisms; Generate; Defects

This Faculty Early Career Development (CAREER) grant provides funding to develop a relationship between the fabrication of functional materials and their performance/durability in an operational system. Using a comprehensive approach (i.e., theory through realization), processing conditions will be correlated to defects generated in polymer electrolyte membranes (PEMs), which will lead to a direct correlation of fabrication to system performance (e.g., a PEM fuel cell). Theoretical and numerical modeling will be conducted to predict the behavior of the material as it exits the fabrication tool and to study the interfacial phenomena between the material and the substrate. Using a custom designed and built Roll-Feed Imaging System, defects will be analyzed and qualified based on the processing conditions. The effects of mechanical properties, such as stress, shrinkage, relaxation, on the durability of the membranes will be studied using numerical and experimental methods. Finally, the resulting film (with and without) defects will be tested in a PEM fuel cell to obtain comparative overall life expectancy data.If successful, advancements in research to understand mechanical failure of polymer electrolyte membranes used in energy systems will be made. the proposed framework will enable analysis for correlating defects from the fluid and solid phases to system failure; this work will lead for the first time to a detailed correlation between the manufacturing issues of complex materials and their performance. Furthermore, the proposed investigation will make it possible to correlate materials processing to system life cycle, which has not yet been realized in the field. To integrate the research and education plans and to broaden the participation of underrepresented groups, the PI will further develop a program focused on energy technology, coined ELECTRoDE: Educators Leading Energy Conservation and Training Researchers of Diverse Ethnicities, which integrates students and faculty at underrepresented institutions into year round research.

这项学院早期职业发展(CALEAR)补助金提供资金，以在操作系统中发展功能材料的制造与其性能/耐久性之间的关系。使用综合方法(即，从理论到实现)，工艺条件将与聚合物电解质膜(PEM)中产生的缺陷相关，这将导致制造与系统性能(例如，PEM燃料电池)直接相关。将进行理论和数值模拟，以预测材料离开制造工具时的行为，并研究材料与衬底之间的界面现象。使用定制设计和建造的滚筒进给成像系统，将根据加工条件对缺陷进行分析和鉴定。力学性能，如应力、收缩、松弛，将用数值和实验方法研究对膜耐久性的影响。最后，将在质子交换膜燃料电池中测试产生的膜(有缺陷和没有缺陷)，以获得相对的总体预期寿命数据。如果成功，将在理解用于能源系统的聚合物电解质膜的机械故障的研究方面取得进展。拟议的框架将能够分析流体和固体相的缺陷与系统故障之间的关联；这项工作将首次导致复杂材料的制造问题与其性能之间的详细关联。此外，拟议的调查将使材料处理与系统生命周期相关联成为可能，而这一点在实地尚未实现。为了整合研究和教育计划，并扩大代表不足群体的参与，国际和平研究所将进一步开发一个专注于能源技术的项目，即创造电极：教育工作者领导节能和培训不同种族的研究人员，将代表不足机构的学生和教职员工纳入全年研究。