Dissimilar nanojoining based on relatively-soft surface activation and interface functionality for energy conversion

以NiO-YSZ复合纳米颗粒为模型材料，研究了基于相对软表面活化的纳米颗粒干沉积。结果表明，当纳米颗粒尺寸小于10nm时，成功制备了由NiO-YSZ复合纳米颗粒组成的多孔膜。人们认为，在室温下观察到的纳米连接可能是由机械化学反应引起的，这种反应促进了两个不同颗粒表面羟基对之间的脱水缩合。结果表明，采用本方法制备的SOFC阳极具有较低的极化损耗。此外，还研究了锂离子电池阴极的干法加工方法。结果表明，核/壳型复合纳米颗粒具有足够的摩擦电荷，可用于静电沉积。

Nanoparticle dry deposition has been investigated based on relatively-soft surface activation, using NiO-YSZ composite nanoparticle as a model material. As a result, the porous film consisting of NiO-YSZ composite nanoparticle has been successfully obtained when the size of nanoparticles was less than about 10nm. It has been considered that the observed nano-joining at room temperature may be caused by a mechanochemical reaction which facilitates the dehydration-condensation between the couples of surface hydroxyl groups on two dissimilar particles. A low polarization loss was demonstrated for the SOFC anode fabricated by the present deposition process and subsequent sintering. In addition, a dry processing method for cathodes of Li-ion battery has been investigated. It was demonstrated that the core/shell type composite nanoparticles can be frictionally charged enough for electro static deposition.