Collaborative Research: Mesoscale Investigation of Microstructure-Transport Interaction of High-Capacity Electrodes for Energy Storage

合作研究：用于储能的高容量电极的微结构-输运相互作用的介观研究

• 批准号: 1438683
• 负责人: George Nelson
• 金额: $ 20.24万
• 依托单位: University of Alabama in Huntsville
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1438683&HistoricalAwards=false
• 关键词: Collaborative; Research; Mesoscale; Investigation; Microstructure

Collaborative Research: Mesoscale Investigation of Microstructure-Transport Interaction of High-Capacity Electrodes for Energy Storage1438431 - Partha P. Mukherjee (Texas A&M University), 1438683 - George J. Nelson (University of Alabama in Huntsville)Energy storage is a key enabler for vehicle electrification. The lithium-ion battery (LIB) is being considered as one of the candidates for vehicular energy storage. It is, however, critical to accelerate innovation toward improved performance, life and safety of lithium-ion batteries. One factor that needs to be addressed is increasing the drive range of electric vehicles, that is the distance the vehicle can go without having to be recharged. This requires dramatic improvement in the LIB "energy density." Nanostructured materials have spurred recent breakthroughs in high-performance electrode development, particularly with respect to energy storage capacity. For example, high-capacity anodes based on nanostructured tin alloys can achieve significant increase in battery capacity compared to conventional graphite anodes. However, these materials undergo excessive volume change when reacting with lithium, leading to dramatic changes in the electrode structure that causes deterioration of battery performance. This research aims to develop an integrated computational and experimental approach that will lead to fundamental insights into the microstructure, electrochemical and transport phenomena interactions in high-capacity LIB electrodes. Development of high-performance LIB electrodes with cyclic stability and longer life could provide a major breakthrough in energy storage technology for automotive and other applications.The goal of this work is to foster fundamental understanding of the microstructural and phase evolution mechanisms that drive performance decay in high-capacity Li-ion battery electrodes, e.g. tin-based mesoporous intermetallic anodes. In this regard, a synergistic computational and experimental investigation is planned that will focus on mesoscale transport, reaction and mechanics interplay in electrode structures. The PIs anticipate that the tomography, mesoscle modeling and electrochemical studies will have a significant impact on the development of high-capacity LIB electrodes. The tomographic data obtained and the related mesoscale models will broaden the set of 3D microstructural data for energy storage materials and related analysis tools that are currently available to the research community. The integrated education and outreach plan will bring together graduate, undergraduate and high school students, along with a strong emphasis on the participation of underrepresented and minority students. Research findings will also be integrated into curriculum development efforts. It is envisioned that this synergistic approach will have significant benefits in the broader context of clean and sustainable energy.

协作研究：中尺度研究对储能存储高容量的电极的微观结构 - 传输相互作用1438431 -Partha P. Mukherjee（德克萨斯州A＆M大学），1438683 -George J. Nelson（Huntsville的Alabama Storage in Huntsville）是汽车电气化。锂离子电池（LIB）被视为车辆能源存储的候选者之一。但是，加速创新朝着改善锂离子电池的性能，生活和安全性至关重要。需要解决的一个因素是增加电动汽车的驱动范围，即车辆可以行驶的距离而无需充电。 这需要LIB“能量密度”的显着改善。纳米结构的材料刺激了高性能电极发展中最近的突破，尤其是在储能能力方面。例如，与常规的石墨阳极相比，基于纳米结构的锡合金基于纳米结构的锡合金的大容量阳极可以显着增加电池容量。但是，这些材料与锂反应时会发生过多的体积变化，从而导致电极结构发生巨大变化，从而导致电池性能恶化。这项研究旨在开发一种集成的计算和实验方法，从而导致对高容量LIB电极中微观结构，电化学和运输现象相互作用的基本见解。开发具有循环稳定性和更长寿命的高性能LIB电极可以为汽车和其他应用提供储能技术的重大突破。这项工作的目的是促进对微观结构和相位进化机制的基本了解，从而驱动微观结构和相位进化机制，从而驱动性能衰减。大容量锂离子电极，例如基于锡的介孔间阳极。在这方面，计划进行协同的计算和实验研究，该研究将集中于电极结构中的中尺度运输，反应和力学相互作用。 PI预计，断层扫描，介质建模和电化学研究将对高容量LIB电极的发展产生重大影响。获得的层析成像数据和相关的中尺度模型将扩大用于储能材料和相关分析工具的3D微结构数据集，这些工具当前可供研究社区使用。综合教育和外展计划将汇集毕业生，本科生和高中生，并非常强调代表性不足和少数族裔学生的参与。研究发现也将集成到课程发展工作中。可以预见的是，这种协同的方法将在清洁和可持续能源的更广泛的背景下具有重大好处。