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

这个小企业创新研究（SBIR）项目的重点是开发一种固态锂离子薄膜电池，该电池采用低成本的纳米颗粒沉积方法制造。在第一阶段，纳米颗粒沉积方法的可行性将通过开发以LiCoO2为阴极，氧化氮化磷锂（LIPON）为电解质，碳纳米管（CNT）和纳米尺度锡颗粒（~10 nm）为阳极的纳米复合材料的锂离子电池来证明。阴极和阳极将采用纳米颗粒涂层技术。这种纳米颗粒涂层的沉积依赖于未凝聚的纳米颗粒胶体的合成，然后可以使用简单的液相沉积技术，如自旋涂层或浸渍涂层进行沉积。与物理气相沉积工艺相比，使用非真空工艺沉积锂基电池涂层不仅可以降低制造成本，而且有助于提高电池的性能。该项目的成功完成将大大提高薄膜锂离子固态电池的制造水平。

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.