I-Corps: Carbocation-based electrolytes for robust symmetrical organic redox flow batteries

I-Corps：用于坚固对称有机氧化还原液流电池的碳阳离子电解质

• 批准号: 2123190
• 负责人: Thomas Gianetti
• 金额: $ 5万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-03-15 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2123190&HistoricalAwards=false
• 关键词: Corps; Carbocation; based; electrolytes; robust

The broader impact/commercial potential of this I-Corps project is the development of a battery that allows long duration energy storage. The integration of renewable energy is transitioning to achieve zero-carbon emission in the decades to come. Due to solar and wind energy’s transitory nature, the successful deployment of renewable energy on a large scale depends on the development of efficient energy storage systems. While lithium-ion batteries are the most developed electrochemical storage technology at utility scale, they are best suited for four to six hours (4–6 h) storage and high demand peak shaving. To achieve longer-term emission goals, longer duration energy storage of 8–12 h or more is required. Long duration storage technologies, such as the proposed battery technology, have potential for utility, industry, and residential scale applications. This I-Corps project is based on the development of energetically dense and inexpensive electrolytes for robust symmetrical organic Redox Flow Batteries (RFBs). In RFBs, power is controlled by the electrode size and the number of stacked electrodes, while energy capacity is controlled by the size of the tank that stores the electrolyte, resulting in the decoupling of power and energy capacity. For long-term storage, the ability to decouple power and energy is beneficial since the size of RFB stacks and tanks may be changed to meet application requirements. Unlike metal-based RFBs, organic RFBs overcome limitations of conventional RFBs, such as high cost and high toxicity, while providing the long duration energy storage that lithium-ion batteries cannot. The proposed technology employs carbocation, such as methoxyquinolinoacridinium salt, which is a stable electrolyte with an open circuit potential of 2.12 V. These salts may be used as both the anolyte and catholyte, resulting in a fully symmetric system that has high cyclability and high efficiency retention. This I-Corps team will determine the suitability of this technology to the marketplace through customer discovery.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.

该 I-Corps 项目的更广泛影响/商业潜力是开发一种允许长期储能的电池，由于太阳能和风能，可再生能源的整合正在向实现零碳排放转变。由于具有短暂性，可再生能源的大规模成功部署取决于高效能源存储系统的开发，虽然锂离子电池是公用事业规模上最发达的电化学存储技术，但它们最适合四到六小时（4）。 –6 h) 储存和高温为了实现长期排放目标，需要 8-12 小时或更长的持续时间储能技术，例如拟议的电池技术，具有在公用事业、工业和住宅规模应用的潜力。该 I-Corps 项目基于为坚固的对称有机氧化还原液流电池 (RFB) 开发能量密集且廉价的电解质。在 RFB 中，功率由电极尺寸和堆叠电极数量控制，而能量容量则由电极尺寸和堆叠电极数量控制。由存储电解质的储罐的尺寸控制，从而实现功率和能量容量的解耦。对于长期存储，功率和能量解耦的能力是有益的，因为可以改变 RFB 堆和储罐的尺寸来满足。与金属基 RFB 不同，有机 RFB 克服了传统 RFB 的局限性，例如高成本和高毒性，同时提供了锂离子电池无法实现的长期能量存储，例如碳阳离子。甲氧基喹啉吖啶盐，是一种稳定的电解质，开路电位为 2.12 V。这些盐可用作阳极电解液和阴极电解液，从而形成具有高循环性和高效率保留的完全对称系统。通过客户发现确定该技术对市场的适用性。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优势和更广泛的评估进行评估，被认为值得支持影响审查标准。