GOALI: Lithium Alloy-Carbon Composite Nanofibers for Energy Storage by Electrospinning and Carbonization

GOALI：通过静电纺丝和碳化制备锂合金-碳复合纳米纤维用于储能

• 批准号: 0555959
• 负责人: Peter Fedkiw
• 金额: $ 38万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0555959&HistoricalAwards=false
• 关键词: GOALI; Lithium; Alloy; Carbon; Composite

The objective of this Grant Opportunity for Academic Liaison with Industry (GOALI) award is to apply electrospinning and carbonization technologies to integrate dissimilar materials (lithium alloy and carbon) into a novel type of composite nanofiber for use in lithium-ion batteries. The resultant nanofiber materials combine the advantageous properties of lithium alloy (high-storage capacity) and carbon (long-cycle life) in that the carbon matrix accommodates the volume change of the encapsulated lithium alloy nanoparticles during lithium insertion/extraction. The composite nanofibers may be electrospun into nonwoven fabrics that can be directly used as lithium-ion anodes and thereby eliminate the present use of non-active materials resulting in improved energy and power densities. Fundamental knowledge generated about the processing-structure-performance relationships will guide the design of controlled nano/microstructures and composition to achieve enhanced materials properties for various applications. The anticipated results will have important scientific and economic impact. Guidelines for both electrospinning and carbonization of inorganic-organic composite nanofibers will be established. Integration of dissimilar materials (lithium alloy and carbon) with multifunctionalities will be realized. Furthermore, the broader impact of this research includes the involvement of graduate and undergraduate students, incorporation of the state-of-the-art research results into existing courses, and partnerships with K-12 programs to increase the use and impact of new technologies in public education.

该奖项的目的是应用静电纺丝和碳化技术将不同的材料（锂合金和碳）整合到一种新型的复合材料中，用于锂离子电池。所得到的锂合金材料联合收割机结合了锂合金（高储存容量）和碳（长循环寿命）的有利性质，因为碳基质在锂插入/取出期间适应包封的锂合金纳米颗粒的体积变化。 复合纳米纤维可以静电纺丝成非织造织物，其可以直接用作锂离子阳极，从而消除了目前使用的非活性材料，从而提高了能量和功率密度。关于加工-结构-性能关系的基础知识将指导受控纳米/微观结构和组成的设计，以实现各种应用的增强材料性能。 预期结果将产生重要的科学和经济影响。 将建立无机-有机复合纳米纤维的静电纺丝和碳化指南。 将实现异种材料（锂合金和碳）的多功能集成。 此外，这项研究的更广泛的影响包括研究生和本科生的参与，将最先进的研究成果纳入现有课程，并与K-12计划合作，以增加新技术在公共教育中的使用和影响。