EAGER: Flame-Assisted Chemical Vapor Deposition for Energy Storage Electrode Fabrication

稳定的基本负荷电力以可再生能源为基础，需要广泛实施储能技术。本项目旨在开发一种用于生产储能电极的火焰合成工艺。这种基于火焰的制造可以减少生产步骤，提高可持续性。快速合成和干法生产是火焰合成的关键优点。火焰合成的可控性和选择性将使高性能储能电极的制造成为可能。预计该项目中开发的基于火焰的方法将有可能在工业规模上生产储能电极。该项目还将开设一门课程，名为“新兴技术的可扩展制造”，该课程将使学生接触到与新兴技术相关的制造方法。该项目专注于在将沉积结合到功能薄膜中的过程中火焰合成氧化锰和碳纳米材料。这项工作与储能电极相关，涉及多方面的基础研究，包括a)氧化锰和碳纳米颗粒火焰合成的热力学和动力学，b)纳米材料结构/膜形态与电化学性能之间的关系，以及c)制备储能电极多组分薄膜的气溶胶动力学。将对火焰条件下的表面能效应进行新的热力学分析，并将研究锰氧化和碳sp2生成的动力学。静止流动中火焰合成的反应流模拟将与多孔膜沉积的气溶胶动力学相联系。具有最大离子和电子导电性的储能电极将采用双火焰CVD工艺制备氧化锰/碳膜。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。

Steady baseload power, based on renewable energy, requires widespread implementation of energy storage technology. This project is to develop a flame synthesis process for producing energy storage electrodes. Such flame-based fabrication can reduce production steps and improve sustainability. Rapid synthesis and dry production are key strengths of flame synthesis. The control and selectivity of flame synthesis will allow for fabrication of high-performing energy storage electrodes. It is anticipated that the flame-based method developed in this project will have the potential to produce energy storage electrodes on an industrial scale. This project will also lead to the creation of a course, "Scalable Manufacturing of Emerging Technologies", which will expose students to manufacturing methods relevant to emerging technologies.This project is focused on flame synthesis of manganese oxide and carbon nano-materials in a process that combines deposition into functional films. Relevant to energy storage electrodes, this work involves various fundamental studies, including a) thermodynamics and kinetics of manganese oxide and carbon nanoparticle flame synthesis, b) relationship between nano-material structure / film-morphology and electrochemical performance, and c) aerosol dynamics governing fabrication of multi-component films for energy storage electrodes. A new thermodynamic analysis for the surface energy effect at flame conditions will be applied and kinetics of Mn oxidation and carbon sp2 formation will be studied. Reacting flow simulations of flame synthesis in stagnation flow will be connected to aerosol dynamics of porous film deposition. A dual-flame CVD process for fabrication of Mn oxide / carbon films will be developed for energy storage electrodes having maximum ionic and electronic conductivity.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.