RII Track-4: Developing and Investigating Organic-Inorganic Hybrid Ultrathin Solid Electrolytes with NREL for Lithium Ion Batteries

RII Track-4：使用 NREL 开发和研究用于锂离子电池的有机-无机混合超薄固体电解质

• 批准号: 1832963
• 负责人: Ling Fei
• 金额: $ 24.92万
• 依托单位: University of Louisiana at Lafayette
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-10-01 至 2022-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1832963&HistoricalAwards=false
• 关键词: RII; Track; Developing; Investigating; Organic

Nontechnical DescriptionAs the market for lithium ion batteries (LIBs) keeps expanding, the importance of battery reliability and safety continues to rise. Commercially used organic liquid electrolytes in LIBs remain a huge safety issue due to their high volatility and flammability. Solid-state electrolytes have attracted great attention as the potential replacement due to their nonflammability, leakproof feature, and resistance to damage caused by dendrite growth. There are two main types of solid electrolytes with complementary properties: solid polymer electrolytes (SPE) and inorganic solid ceramic electrolytes (ISE). This project plans to develop ultrathin ISE/SPE hybrid electrolyte films with laminated bilayer configuration and to study their ISE/SPE interface properties and how these properties influence lithium ion transport and conductivity. The outcomes of this project will greatly advance the knowledge of design and fabrication of solid electrolytes with nanoscale engineered structures and properties for safer LIBs. The training and hands-on experience on cutting-edge technologies and the collaborations established via this program will directly benefit the PI?s continuing research plan on hybrid electrolytes and greatly enhance the research capacity of UL Lafayette. Technical DescriptionSPE have the advantages of simple fabrication process and good flexibility but are inhibited by low ionic conductivity, low thermal stability, and poor oxidation resistivity. ISE have relatively high ionic conductivity and high thermal stability but very low flexibility. Given the complementary properties of SPE and ISE, there have been prior efforts to develop SPE and ISE composite electrolytes with either filler in bulk structure or ISE/SPE laminated multi-layer configuration. It has been found that SPE/ISE interface properties are key influencers of the lithium ion transfer path and conductivity. A good understanding of ISE/SPE interfaces behavior from this work will provide guidance on the design and development of solid hybrid electrolytes materials for practical LIBs application. In this project, a laminated bilayer configuration with one large interface area will be used as a model for the ISE/SPE electrolyte interface study since filler-bulk type electrolytes have too many complicated interface interactions to fulfill the purpose. Two other dominant factors that impact electrolyte performance include film thickness and film evenness. This project will utilize a unique combination of two technical fabrication processes (air-controlled electrospray and magnetron sputtering) that not only significantly lowers the electrolyte film thickness and improves film evenness, but also allows the flexibility to prepare different types of solid electrolytes based on the application?s specific need, such as directly deposited solid electrolyte on electrodes (particularly important for 3D batteries) or free-standing thin electrolyte films. Results and scientific discoveries from this project are of significant meaning for both fundamental knowledge advancement and applied technology development.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术描述是锂离子电池（LIB）的市场不断扩大，电池可靠性和安全性的重要性持续上升。 Libs中商业使用的有机液体电解质由于其高波动性和易燃性而仍然是一个巨大的安全问题。固态电解质引起了极大的关注，因为由于其不易受性，防漏功能以及对树突生长造成的损害的抵抗力引起的潜在替代品。具有互补特性的固体电解质的两种主要类型：固体聚合物电解质（SPE）和无机固体陶瓷电解质（ISE）。该项目计划开发具有层压双层构型的超薄ISE/SPE混合电解质膜，并研究其ISE/SPE界面特性以及这些特性如何影响锂离子的运输和电导率。该项目的结果将大大提高使用纳米级工程结构和更安全的液体的固体电解质的设计和制造知识。关于尖端技术的培训和实践经验以及通过该计划建立的合作将直接受益于PI的持续研究计划，并大大提高了UL Lafayette的研究能力。技术描述PE具有简单制造过程和良好的柔韧性的优势，但由于离子电导率低，热稳定性低和氧化电阻率较差而受到抑制。 ISE具有相对较高的离子电导率和较高的热稳定性，但灵活性非常低。鉴于SPE和ISE的互补特性，已经努力开发SPE和ISE复合电解质，并具有散装结构的填充物或ISE/SPE层压多层构型。已经发现，SPE/ISE界面特性是锂离子传递路径和电导率的关键影响者。对这项工作的ISE/SPE接口行为的良好理解将为实用LIBS应用的固体混合电解质材料的设计和开发提供指导。在这个项目中，具有一个大界面区域的层压双层构型将用作ISE/SPE电解质界面研究的模型，因为填充式式电解质具有太多复杂的界面相互作用，无法实现该目的。影响电解质性能的另外两个主要因素包括膜厚度和膜均匀度。该项目将利用两个技术制造工艺（空气控制的电喷雾和磁孔溅射）的独特组合，这些过程不仅显着降低了电解质膜的厚度并改善薄膜均匀度，还可以灵活地基于使用电解质或薄膜薄膜（例如，薄膜）（例如，薄膜或薄膜）准备不同类型的固体电解质（例如，薄膜），尤其是3D的电池。该项目中的结果和科学发现对于基本知识的进步和应用技术开发具有重要意义。该奖项反映了NSF的法定任务，并且使用基金会的知识分子优点和更广泛的影响审查标准，被认为值得通过评估来获得支持。

项目成果

Bio‐derived nanomaterials for energy storage and conversion

• DOI: 10.1002/nano.202100001
• 发表时间: 2021-03
• 期刊: Nano Select
• 作者: M. Powell;Jed D. Lacoste;Chris Fetrow;Ling Fei;Shuya Wei

Investigating the Effects of Lithium Phosphorous Oxynitride Coating on Blended Solid Polymer Electrolytes

• DOI: 10.1021/acsami.0c09113
• 发表时间: 2020-08
• 期刊: ACS Applied Materials & Interfaces
• 影响因子: 9.5
• 作者: Jed D. Lacoste;Zhifei Li;Yun Xu;Zizhou He;Drew C Matherne;A. Zakutayev;Ling Fei

A Generalized Synthesis Strategy for Binderless, Free-Standing Anode for Lithium/Sodium Ion Battery Comprised of Metal Selenides@Carbon Nanofibers

• DOI: 10.1021/acsaem.1c03277
• 发表时间: 2021-12-16
• 期刊: ACS APPLIED ENERGY MATERIALS
• 影响因子: 6.4
• 作者: He, Zizhou;Guo, Hui;Fei, Ling
• 通讯作者: Fei, Ling