PFI-TT: Fabrication of Solid Electrolyte Thin Films with Plasma Processing to Enable Solid State Batteries with High Energy Density

PFI-TT：通过等离子体处理制造固体电解质薄膜，以实现高能量密度的固态电池

• 批准号: 2234636
• 负责人: Candace Chan
• 金额: $ 25万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-04-15 至 2025-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2234636&HistoricalAwards=false
• 关键词: PFI; TT; Fabrication; Solid; Electrolyte

The broader impact/commercial potential of this Partnerships for Innovation - Technology Translation (PFI-TT) project is the production of high quality thin films for applications in batteries. The replacement of flammable liquid electrolytes with solid-state electrolytes in next generation batteries will greatly improve the energy density and safety of lithium batteries. However, it is still a challenge to fabricate high performance solid-state batteries using commercially viable manufacturing processes. The outcome of this project will be the development a new scalable process for fabrication of novel materials for solid-state batteries. The proposed technology derives strengths from chip manufacturing techniques and will enable batteries with improved safety characteristics and energy density compared to the state-of-the-art lithium-ion batteries. The impact of the technology will be accelerated commercialization of the next generation of batteries for electric vehicles, drones, power electronics, and other energy storage applications.The proposed project will develop a novel deposition method that will enable high quality thin films of lithium conducting solid electrolyte, Li7La3Zr2O12 (LLZO), to be grown directly on substrates and electrodes. Among the solid-state electrolytes being considered for all-solid-state batteries, LLZO is one of the most attractive due to its high ionic conductivity and good thermal and electrochemical stability. However, the inability to reliably form LLZO thin films with existing physical/chemical vapor deposition methods or conventional ceramics processing is a major obstacle to the commercialization of LLZO-based solid-state batteries. The innovation is in using plasma-based methods for the production of high quality LLZO thin films with low interfacial resistance and a grain microstructure that is expected to mitigate lithium dendrite penetration. The research will identify optimal process parameters for the film deposition and surface treatments and establish relationships between the LLZO film quality and mechanical and electrochemical properties. Through a close collaboration combining expertise in LLZO materials synthesis, plasma processing, and commercialization of battery ceramic materials and manufacturing processes, knowledge gaps related to the correlations between LLZO thin film growth conditions, device performance, and commercial viability will be bridged.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.

这种创新合作伙伴关系的更广泛的影响/商业潜力 - 技术翻译（PFI -TT）项目是生产用于电池中应用的高质量薄膜。在下一代电池中，用固态电解质代替易燃液体电解质将大大提高锂电池的能量密度和安全性。但是，使用商业上可行的制造工艺制造高性能固态电池仍然是一个挑战。该项目的结果将是开发用于制造新型固态电池材料的新的可扩展过程。提出的技术从芯片制造技术中获得了优势，与最先进的锂离子电池相比，具有改善安全特性和能量密度的电池。该技术的影响将加速对电动汽车，无人机，电力电子设备和其他能源存储应用的下一代电池的商业化。拟议的项目将开发一种新型的沉积方法，该方法将启用锂的高质量薄膜，用于固体电解质，li7la3zr2o12（llzo），直接构成固体和电气的固体和电子产品。在考虑到全稳态电池的固态电解质中，LLZO是最有吸引力的，这是由于其高离子电导率以及良好的热和电化学稳定性。但是，无法可靠地形成现有的物理/化学蒸气沉积方法或常规陶瓷加工的LLZO薄膜是基于LLZO的固态电池商业化的主要障碍。创新是在使用基于等离子体的方法来生产具有低界面电阻的高质量LLZO薄膜和预期减轻树突渗透锂的谷物微观结构。该研究将确定膜沉积和表面处理的最佳过程参数，并在LLZO膜质量与机械和电化学特性之间建立关系。通过紧密的合作结合了LLZO材料合成，血浆处理和电池陶瓷材料和制造过程的商业化的专业知识，与LLZO薄膜增长条件，设备性能和商业生存能力相关的知识差距将被弥补，这反映了NSF的法定任务和经过评估的范围。