SBIR Phase I: Nanoparticulate Based Coating Approach for Making Thin Film Batteries

这个小型企业创新研究(SBIR)项目专注于开发一种固态锂离子薄膜电池，该电池采用成本较低的纳米颗粒沉积方法制造。在第一阶段，以LiCoO2为正极，以磷氧氮锂(LiPON)为电解液，以碳纳米管(CNT)和纳米TiN颗粒(~10 nm)为阳极的纳米复合材料为负极，论证了纳米粒子沉积方法的可行性。阴极和阳极将使用基于纳米颗粒的涂层技术来开发。这种纳米颗粒涂层的沉积依赖于合成未团聚的纳米颗粒的胶体，然后可以使用旋涂或浸渍涂层等简单的液相沉积技术进行沉积。与物理气相沉积工艺相比，使用非真空工艺沉积锂离子电池的涂层不仅可以降低制造成本，而且有助于提高电池的性能。拟议项目的成功完成将导致薄膜锂离子固态电池制造的显著改善。

This Small Business Innovative Research (SBIR) project focuses on development of a solid state lithium ion thin film battery made by using a lower cost, nanoparticulate based deposition approach. In Phase I, the feasibility of a nanoparticulate deposition approach will be demonstrated by developing a Lithium ion cell with LiCoO2 as cathode, lithium phosphorous oxynitride (LIPON) as the electrolyte and a nanocomposite of carbon nanotubes (CNT) and nanoscale tin particles (~10 nm) as the anode. The cathode and the anode will be developed using a nanoparticulate based coating technique. Deposition of such nanoparticulate coating relies on synthesis of colloids of unagglomerated nanoparticles that can then be deposited using simple liquid phase deposition techniques like spin coating or dip coating. Using a non-vacuum based process to deposit coatings for a Li ion-based battery as compared to physical vapor deposition processes will not only reduce the manufacturing cost but will contribute towards improving the performance of the battery. Successful completion of the proposed project will lead to significant improvement in the manufacturing of thin film lithium ion solid state batteries.