High Potential Redox Couples: Design Strategies for Survival in Diverse Environments

高电位氧化还原对：在不同环境中生存的设计策略

• 批准号: 1800482
• 负责人: Aman Preet Kaur
• 金额: $ 32.41万
• 依托单位: University of Kentucky Research Foundation
• 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: 2018-08-01 至 2022-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1800482&HistoricalAwards=false
• 关键词: Potential; Redox; Couples; Design; Strategies

In this project, funded by the Chemical Structure, Dynamic & Mechanism B Program of the Chemistry Division, Professor Susan Odom of the Department of Chemistry at the University of Kentucky is developing high-oxidation-potential organic compounds to serve as electro-active components of batteries with non-aqueous electrolytes, and to develop a library of shelf-stable and organic radical cation salts for use as chemical reagents. The research could have significant impacts on overcharge protection of high-voltage cathodes in lithium-ion batteries. It could also lead to more efficient preparation of active components of pharmaceutical values. This project, which bridges organic, materials, and electro-chemistry, is poised to train students in highly collaborative research. Through annual Expanding Your Horizons Conferences, middle school girls with interest in STEM fields are the focus of outreach activities.The reactivity of radical cations of conjugated organic compounds is difficult to predict, complicated by the combination of the electron deficient and radical nature of these singly oxidized species. Despite the numerous applications in which radical cations are used directly or appear as intermediates, progress in developing new materials is hindered due to the limited understanding of factors leading to stable oxidized states. Through the proposed research, this research group hopes to develop electro-active materials with stable radical cations and to extend the environments in which these species can be utilized. In addition to more efficient compounds for overcharge protections in lithium-ion batteries and new reagents for organic synthesis, the research will elucidate reaction mechanisms of radical cations for a greater understanding of the stability and decomposition pathways of these electron-deficient species.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.

在该项目中，由化学部的化学结构，动力学机制B计划资助，肯塔基州大学化学系的Susan Odom教授正在开发高氧化电位有机化合物，用作非水电解质电池的电活性成分，并开发用于化学试剂的储存稳定的有机自由基阳离子盐库。 该研究可能对锂离子电池高压阴极的过充电保护产生重大影响。 它还可以导致更有效地制备具有药用价值的活性成分。 这个项目，其中桥梁有机，材料和电化学，准备培养学生在高度合作的研究。通过每年的拓展视野会议，对STEM领域感兴趣的中学女生是外联活动的重点。共轭有机化合物的自由基阳离子的反应性很难预测，这些单一氧化物种的缺电子和自由基性质的组合使其复杂化。尽管自由基阳离子被直接使用或作为中间体出现在许多应用中，但由于对导致稳定氧化态的因素的有限理解，开发新材料的进展受到阻碍。通过拟议的研究，该研究小组希望开发具有稳定自由基阳离子的电活性材料，并扩大这些物种可以利用的环境。 除了用于锂离子电池过充电保护的更有效的化合物和用于有机合成的新试剂外，这项研究将阐明自由基阳离子的反应机理，以便更好地了解这些电子-该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查进行评估，被认为值得支持的搜索.