Novel Single-Ion Conductors for Lithium-Ion Batteries

用于锂离子电池的新型单离子导体

• 批准号: 1235761
• 负责人: Qing Wang
• 金额: $ 31.03万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1235761&HistoricalAwards=false
• 关键词: Novel; Single; Ion; Conductors; Lithium

PI: Wang, QingProposal Number: 1235761Institution: Pennsylvania State Univ University ParkTitle: Novel Single-Ion Conductors for Lithium-Ion BatteriesIn order to give a completely new direction in the development of high-performance electrolytes for lithium-ion batteries, this project examines single-ion conducting (SIC) electrolytes, a unique alternative to traditional lithium-ion battery electrolytes. Expected lithium-ion-transference number of unity can potentially eliminate electrolyte polarization losses in the cell that develops in a binary salt system, resulting in an increase in power capacity. The improvements are significant for applications where a high discharge rate is desired, such as electric vehicles. This project examines the properties of the SICs with systematic structural variations by utilizing a comprehensive suite of characterization techniques along with electrochemical measurements to gain fundamental insight into the how the structure characteristics influence the film morphology, Li+ conduction, mechanical and thermal stability, electrochemical properties, and mechanisms of ion dissociation and transport that are desperately needed for this field to advance. The battery performance will be examined to establish full pictures of the structure-property-performance correlations. In addition, the influence of the SIC membranes on the formation, composition and morphology of the solid-electrolyte interface layer and their impacts on the cell performance will be examined. The project, if successful as planned, will open a completely new direction in the development of high-performance electrolytes for lithium-ion batteries. Moreover, it will shed light on the fundamental understanding of ion transport and polymer electrolytes which are relevant for a range of advanced technologies such as actuators, alternative battery membranes, and fuel cells. The project will train scientists and engineers capable of working in the interdisciplinary field of energy storage. Through the collaboration with Seoul National University, the graduate students will gain valuable experience in the international research and education. Particular attention will be given to recruiting women and under-represented minority undergraduate research assistants through the Penn State Minority Undergraduate Research Experience, and Women in Science and Engineering Research programs.

皮：王，清提案编号：1235761机构：宾夕法尼亚州立大学园名：锂离子电池用新型单离子导体为了给锂离子电池高性能电解液的发展提供一个全新的方向，本项目研究了一种传统锂离子电池电解液的独特替代品--单离子导电(SIC)电解液。预期的锂离子迁移数为1可以潜在地消除在二元盐体系中形成的电池中的电解液极化损失，从而增加功率容量。这些改进对于需要高放电率的应用，如电动汽车，意义重大。本项目通过利用一套全面的表征技术和电化学测量来研究具有系统结构变化的SiC的性质，以获得该领域发展所迫切需要的结构特征如何影响薄膜形态、Li+导电性、机械和热稳定性、电化学性质以及离子解离和传输机制的基本见解。将对电池性能进行检查，以建立结构-性能-性能相关性的完整图像。此外，还将考察碳化硅薄膜对固体-电解质界面层的形成、组成和形态的影响以及它们对电池性能的影响。该项目如果按计划成功，将为锂离子电池高性能电解液的发展开辟一个全新的方向。此外，它还将阐明对离子传输和聚合物电解液的基本理解，这些与一系列先进技术相关，如致动器、替代电池膜和燃料电池。该项目将培训能够在能量储存的跨学科领域工作的科学家和工程师。通过与首尔国立大学的合作，研究生将在国际研究和教育方面获得宝贵的经验。将特别注意通过宾夕法尼亚州立大学少数民族本科生研究经验和妇女参与科学和工程研究方案招聘女性和代表性不足的少数族裔本科生研究助理。