STTR Phase I: Novel Electrode Materials for Multi-Layer Capacitors

这个小企业技术转让第一阶段项目将开发制造低成本小型化多层电容器（mlc）的技术。二氧化钛（TiO2）薄膜将沉积在60至150纳米的镍（Ni）颗粒上，以保护超细镍颗粒免受缓慢氧化降解，同时在加工过程中提供与介电钛酸钡（BaTiO3）层化学相容的表面。TiO2薄膜可以提高超细Ni颗粒的烧结温度，因此在烧结时可以很容易地制造出交错的Ni/BaTiO3电极/介电多层膜。通过新型原子层沉积（ALD）薄膜技术制备复合TiO2/Ni颗粒，可以合成具有双重功效（抗氧化，提高烧结温度）的复合超细Ni衬底颗粒。在这项工作的第一个方面，TiO2将通过ALD沉积在60至150 nm的Ni颗粒上。在这项工作的第二个方面，复合粉末将被表征为薄膜质量、抗氧化性和加热时的热膨胀（即烧结性）。在这项工作的第三个方面，将合成1公斤的复合粉末样品并提供给合作伙伴/客户进行可行性评估。在商业上，成功的大规模加工的潜在影响远远超出了这个提议的MLC应用。如果超细颗粒的单个表面能够功能化，纳米科学将实现真正的“颠覆性”技术地位。ALD纳米涂层的超细颗粒提供了这样的机会。现在有可能生产出具有设计好的电学、磁学、光学、机械、流变学或其他特性的超细颗粒。这种功能化超细粉末的市场包括微电子、国防、硬金属、化妆品、药物输送、高能材料和聚合物/陶瓷纳米复合材料等。我们将进一步了解超细颗粒纳米涂层及其性价比。

This Small Business Technology Transfer Phase I project will develop technology for the manufacture of low cost miniaturized multi-layer capacitors (MLCs). A titania (TiO2) thin film will be deposited on 60 to 150 nanometer nickel (Ni) particles to protect the ultrafine Ni particles from slow oxidation degradation while simultaneously providing a chemically compatible surface with the dielectric barium titanate (BaTiO3) layer during processing. The TiO2 film will allow the sintering temperature of the ultrafine Ni particles to be increased so the intercleaved Ni/BaTiO3 electrode/dielectric multilayers can be easily fabricated upon firing. The manufacture of composite TiO2/Ni particles via novel Atomic Layer Deposition (ALD) thin film technology allows for the synthesis of composite ultrafine Ni substrate particles with dual effectiveness (resisting oxidation, increasing sintering temperature). In the first aspect of this work, TiO2 will be deposited on 60 to 150 nm Ni particles by ALD. In the second aspect of this work, the composite powders will be characterized for film quality, oxidation resistance, and thermal expansion upon heating (i.e. sinterability). In the third aspect of this work, a 1 kg sample of the composite powder will be synthesized and supplied to a partner/customer for feasibility evaluation.Commercially, the potential impact of successful large scale processing extends far beyond this proposed MLC application. Nanoscience will only achieve true "disruptive" technology status if the individual surfaces of ultrafine particles can be functionalized. ALD nanocoating of ultrafine particles provides such an opportunity. It is now possible to produce ultrafine particles with designed electrical, magnetic, optical, mechanical, rheological, or other properties. Markets for such functionalized ultra-fine powders include microelectronics, defense, hard metals, cosmetics, drug delivery, energetic materials, and polymer/ceramic nanocomposites, among others. A better understanding of the nanocoating of ultra-fine particles and its cost/performance value will be developed.