Collaborative Research: Developing Advanced Magnesium Electrolytes Toward Low Cost, High Energy Density Mg Batteries

合作研究：开发先进镁电解质以实现低成本、高能量密度镁电池

• 批准号: 2211825
• 负责人: Dmitry Bedrov
• 金额: $ 16.5万
• 依托单位: University of Utah
• 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 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2211825&HistoricalAwards=false
• 关键词: Collaborative; Research; Developing; Advanced; Magnesium

In this collaborative project, the team will research advanced magnesium (Mg)-based electrolytes facilitating the development of novel (non-Lithium-based) low-cost and high-performance rechargeable batteries. In response to rapidly increasing energy storage demands of consumer electronics, electric vehicles, and clean energy storage, there is an urgent call for advanced rechargeable batteries with superior energy storage performance compared to state-of-the-art Li ion batteries. Magnesium is a highly attractive anode material due to its high charge capacity, mild reactivity, domestic availability, and low-cost. However, the lack of high-performance Mg2+ ion conductive electrolytes has been a primary technical hurdle for developing practical Mg batteries. The outcomes of this project will pave the way to develop competent and high energy density Mg batteries for applications in portable devices, electric vehicles, and renewable energy storage, thereby alleviating reliance on fossil fuels and their adverse environmental impacts and enhancing the sustainable development of our society. This project integrates outreach activities aimed at promoting research experience and scientific vision of high school and undergraduate students, particularly emphasizing the involvement of underrepresented populations.The fundamental research focuses on developing advanced Cl-free magnesium pinacolatoborate electrolytes while establishing a fundamental understanding of the structure-property relationship of designed Mg electrolytes. The project will result in new in depth understanding of the interfacial and/or intercalation chemistry of the designed Cl-free magnesium pinacolatoborate electrolytes with Mg anode and Mg ion intercalation/insertion cathode materials through an integrated experimental and computational approach. Since current understanding of Mg batteries significantly lags that of Li-ion batteries, this project will yield a substantial knowledge foundation to develop competent high energy density Mg battery technologies for electrochemical energy storage. In addition, the gained fundamental knowledge will also benefit the development of other multivalent battery technologies such as calcium and aluminum batteries.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.

在这个合作项目中，该团队将研究基于高级镁（MG）的电解质，以促进新型（基于非锂的）低成本和高性能可充电电池的开发。为了响应消费电子，电动汽车和清洁能源存储的迅速增加的储能需求，与最先进的电池相比，紧急呼吁具有高级可充电电池具有优越的能源存储性能。镁是一种高度吸引人的阳极材料，由于其高电荷能力，轻度反应性，家用可用性和低成本。但是，缺乏高性能MG2+离子导电电解质是开发实用MG电池的主要技术障碍。该项目的结果将为开发能力且高能密度的MG电池铺平道路，以用于便携式设备，电动汽车和可再生能源存储，从而减轻对化石燃料及其不利环境影响的依赖，并增强我们社会的可持续发展。该项目集成了旨在促进高中和本科生的研究经验和科学愿景的外展活动，尤其是强调了代表性不足的人群的参与。该基本研究重点是开发无CL的高级镁pinacolatoborate型电解质，同时建立对MG Electerolytes的结构生产关系的基本了解。该项目将通过综合实验和计算方法对设计的无CL镁果石型电解质的界面和/或互化化学深入了解。由于目前对MG电池的理解大大落后于锂离子电池，因此该项目将产生大量的知识基础，以开发有能力的高能量密度MG电池技术用于电化学能源存储。此外，获得的基本知识还将受益于其他多价电池技术（例如钙和铝电池）的开发。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的影响来评估的评估。

项目成果

Single‐Solvent‐Based Electrolyte Enabling a High‐Voltage Lithium‐Metal Battery with Long Cycle Life

• DOI: 10.1002/aenm.202300918
• 发表时间: 2023-06
• 期刊: Advanced Energy Materials
• 影响因子: 27.8
• 作者: Yuanqin Li;Mingzhu Liu;K. Wang;C. Li;Ying Lu;Aditya Choudhary;Taylor Ottley;D. Bedrov;L. Xing;Weishang Li