CAS-Climate: Understanding the fundamental redox chemistry and transport of chloroaluminate anions in ionic liquid electrolytes to develop earth-abundant aluminum ion battery

CAS-Climate：了解离子液体电解质中氯铝酸盐阴离子的基本氧化还原化学和传输，以开发地球上丰富的铝离子电池

• 批准号: 2208744
• 负责人: Ruigang Wang
• 金额: $ 37.03万
• 依托单位: University of Alabama Tuscaloosa
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-01 至 2024-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2208744&HistoricalAwards=false
• 关键词: CAS; Climate; Understanding; fundamental; redox

Rechargeable batteries are powering the rise in plug-in electric vehicles and intermittent renewable energy storage/transport/utilization in the electric grid. With double-digit annual growth expected over the next decade for production and sales of electric vehicles, cost of materials, resource availability, and supply chain will become increasingly critical factors in novel and sustainable battery technologies. In this regard, aluminum ion batteries hold great promise for large-scale energy storage applications based on their fast-charging capability, earth-abundant resources, and lower cost of raw materials. The overall objective of this project is to 1) develop novel chloroaluminate ionic liquid electrolytes with low-viscosity and highly conductive additives, and 2) elucidate microscopic conversion chemistry, transport, charge storage mechanism, and stability challenges of chloroaluminate anions in aluminum ion batteries. Such knowledge is critical to enhance the commercialization potential of earth-abundant, safer, and long-life aluminum ion batteries. This project strives to increase participation of underrepresented undergraduate and graduate students in science and engineering research in rural west Alabama. The educational benefits of the project include graduate and undergraduate researcher training in electroanalytical chemistry, materials science, battery science and engineering, microfabrication, and cell design.The project’s aim is to systematically explore the effects of ionic liquid electrolyte compositions and surface engineered graphene foam electrodes on the chloroaluminate anions adsorption, conversion, intercalation, and mass transport, which will provide a fundamental understanding of effective conversion and intercalation/deintercalation chemistry of chloroaluminate anions species in aluminum ion batteries. New insights, including quantitative molecular or atomic-level structural, chemical, spectroscopic, and electrochemical characterizations, into graphene/ionic liquid electrolyte interfacial structures will provide powerful practical strategies to promote or suppress various kinds of interface phenomena. The outcome and knowledge gained from such studies will guide the design and fabrication of novel ionic liquid electrolytes and graphene-based electrodes for superior energy storage density and cycling performance of aluminum ion batteries. Such knowledge is critically needed for designing long-life electrolytes/electrodes and low-cost energy storage systems.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.

可充电电池为电动机电动机电动汽车的上升和电网的间歇性可再生能源存储/运输/利用提供动力。随着未来十年的电动汽车生产和销售，材料成本，资源可用性和供应链的生产和销售的预计，预计将成为新颖和可持续电池技术的越来越重要的因素。在这方面，铝离子电池基于其快速充电能力，丰富的土壤资源和较低的原材料成本，对大规模存储应用具有巨大的希望。该项目的总体目的是1）开发具有低粘度和高导电添加剂的新型氯铝酸离子液体电解质，以及2）阐明微量转化化学，传输，电荷存储机制以及铝氨基酸盐含量在铝氨基离子电池中的稳定性挑战。这种知识对于增强土壤丰富，更安全和长寿的铝离子电池的商业化潜力至关重要。该项目努力增加代表性不足的本科生和研究生在阿拉巴马州农村科学与工程研究中的参与。 The educational benefits of the project include graduate and undergraduate researcher training in electroanalytical chemistry, materials science, battery science and engineering, microfabrication, and cell design.The project’s aim is to systematically explore the Effects of ionic liquid electrolyte compositions and surface engineered graphene foam electrodes on the chloroaluminate anions adsorption, conversion, intercalation, and mass transport, which will provide a fundamental understanding of铝制离子电池中氯氨酸酸盐物种的有效转化和插入/去干扰化化学。新见解，包括定量分子或原子水平的结构，化学，光谱和电化学特征，将其纳入石墨烯/离子液体电解质界面结构中，将提供强大的实用策略，以促进或抑制各种类型的界面现象。从此类研究中获得的结果和知识将指导新型离子液体电解质和基于石墨烯的电极的设计和制造，用于铝离子电池的出色储能密度和循环性能。对于设计长寿命电解质/电极和低成本存储系统的设计是至关重要的。该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的影响来评估，被认为是珍贵的支持。