PFI-TT: Development of Next Generation Sulfur-based Batteries for Enhanced Run Time and Reduced Weight

PFI-TT：开发下一代硫基电池以延长运行时间并减轻重量

• 批准号: 1919177
• 负责人: Vibha Kalra
• 金额: $ 25万
• 依托单位: Drexel University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1919177&HistoricalAwards=false
• 关键词: PFI; TT; Development; Next; Generation

The broader impact/commercial potential of this Partnerships for Innovation - Technology Translation (PFI-TT) project is to help all market sectors where lithium ion (Li-ion) batteries are currently used, such as aerospace & defense, transportation, medical, oil & gas, and consumer electronics. Li-ion, the highest-performing commercially available battery technology, currently accounts for 37% of the $23.5 billion battery market. However, it has currently reached the maximum performance that physics and chemistry allow. For the electric vehicle market, these performance limits would require a 1200 lb, $15,000 battery pack in an all-electric sedan, and therefore broad deployment in SUVs, pickup trucks or heavy-duty military or commercial vehicles would be commercially and economically impractical. The envisioned battery technology uses a different chemistry that potentially offers four times better storage capability than Li-ion batteries and is much lighter, leading to new economically feasible electric cars. Through unique partnerships with industry and technology commercialization, this PFI-TT project will enable testing, evaluation & refinement of the proposed technology, production scale-up and a battery prototype.The proposed project focuses on development of Li-S batteries using a commercially-viable carbonate electrolyte, the liquid responsible for transporting Li+ ions between electrodes. The past R&D efforts for Li-S use ether electrolytes that have low boiling point (~42 degrees C) making them extremely flammable and commercially non-viable. Fundamental investigations on the role of the sulfur phase in altering the reaction mechanism have led to the development of sulfur cathodes that successfully function in carbonate electrolytes - like those used in commercial Li-ion batteries for three decades - with a stable four-fold higher capacity at the material level for 1000+ cycles. This PFI-TT project will undertake development activities to reduce battery weight and increase sulfur loading based on success metrics provided by potential partners during preliminary customer discovery, with the objective to achieve four-fold improvement in the "device-level" specific capacity. The proposed technology will also eliminate dead weight (up to 25% of electrode weight) of binders and current collectors' passive components used in current devices and consequently eliminate slurry processing, a necessary processing step needed for current powder-based electrodes.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.

这一创新技术转化伙伴关系(PFI-TT)项目的更广泛影响/商业潜力是帮助目前使用锂离子(Li-ion)电池的所有市场部门，如航空航天和国防、交通、医疗、石油和天然气以及消费电子产品。Li-ion是市场上可获得的性能最高的电池技术，目前在235亿美元的电池市场中占有37%的份额。然而，它目前已经达到了物理和化学允许的最高性能。对于电动汽车市场，这些性能限制需要在一辆全电动轿车中安装1200磅、1.5万美元的电池组，因此在SUV、皮卡或重型军用或商用车中广泛部署在商业和经济上都是不现实的。设想中的电池技术使用一种不同的化学物质，这种化学物质有可能提供比锂离子电池高四倍的存储能力，而且更轻，从而带来经济上可行的新电动汽车。通过与工业和技术商业化的独特合作伙伴关系，这个PFI-TT项目将能够对拟议的技术、生产规模和电池原型进行测试、评估和改进。拟议的项目专注于使用商业上可行的碳酸盐电解液开发锂S电池，碳酸盐电解液负责锂离子在电极之间的传输。李-S过去的研发工作使用的是沸点低(~42摄氏度)的乙醚电解液，这使得它们非常易燃，在商业上是不可行的。对硫相在改变反应机理中的作用的基础研究导致了成功地在碳酸盐电解液中发挥作用的硫阴极的开发-就像商业锂离子电池使用了30年的那种-在1000+循环中，材料水平的容量稳定地提高了四倍。这个PFI-TT项目将根据潜在合作伙伴在初步发现客户期间提供的成功指标，开展减少电池重量和增加硫磺负荷的开发活动，目标是将“设备级”特定容量提高四倍。这项拟议的技术还将消除当前设备中使用的粘结剂和集电体无源组件的自重(高达电极重量的25%)，从而消除浆料处理，这是当前粉末电极所需的必要处理步骤。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影响审查标准进行评估，被认为值得支持。

项目成果

Sulfur confined MXene hosts enabling the use of carbonate-based electrolytes in alkali metal (Li/Na/K)-sulfur batteries

• DOI: 10.1016/j.mtener.2022.101000
• 发表时间: 2022-05
• 期刊: Materials Today Energy
• 影响因子: 9.3
• 作者: R. Pai;Varun Natu;M. Sokol;M. Carey;T. Greszler;M. Barsoum;V. Kalra

Bottom-up, scalable synthesis of anatase nanofilament-based two-dimensional titanium carbo-oxide flakes

• DOI: 10.1016/j.mattod.2021.10.033
• 发表时间: 2021-12
• 期刊: Materials Today
• 影响因子: 24.2
• 作者: H. Badr;Tarek Aly Elmeligy;M. Carey;Varun Natu;M. Q. Hassig;Craig Johnson;Qiang Qian;Christopher Y. Li;K. Kushnir;Erika Colin-Ulloa;L. Titova;Julia L. Martin;R. Grimm;R. Pai;V. Kalra;Avishek Karmakar;Anthony Ruffino;Stefan Masiuk;Kun Liang;Michael Naguib;Olivia R. Wilson;Andrew J. D. Magenau;Kiana Montazeri;Yucheng Zhu;Hao Cheng;T. Torita;Masashi Koyanagi;Akimaro Yanagimachi;T. Ouisse;M. Barbier;F. Wilhelm;A. Rogalev;Jonas Björk;P. Persson;Johanna Rosen;Yong Hu;M. Barsoum

Tuning functional two-dimensional MXene nanosheets to enable efficient sulfur utilization in lithium-sulfur batteries

• DOI: 10.1016/j.xcrp.2021.100480
• 发表时间: 2021-07-21
• 期刊: CELL REPORTS PHYSICAL SCIENCE
• 影响因子: 8.9
• 作者: Pai, Rahul;Natu, Varun;Kalra, Vibha
• 通讯作者: Kalra, Vibha