Applications of Electrical Properties of Nanomaterials 1. High energy density batteries Conventional and rechargeable batteries are used in almost all applications that require electric power .The energy density ( storage capacity ) of these batteries is quite low requiring frequent recharging .Nanocrystalline materials are good candidates for separator plates in batteries because they can hold considerably more energy than conventional ones. Nickel-metal hydride batteries made of nanocrystalline nickel and metal hydrides are envisioned to require far less frequent recharging and to last much longer. 2.Lager electrochromic display devices An electochromic device consists of materials in which an optical absorption band can be introduced, or an existing band can be altered by the passage of current through the materials, or by the application lf an electric field. They are similar to liquid-crystal displays (LCD) commonly used in calculators and watches and are primarily used in public billboards and ticker boards to convey information. The resolution, brightness, and contrast of these devices depend on the tungstic acid gels grain size. Hence, nanomaterials, such an tungstic oxide gel, are being explored for this purpose纳米材料的电性能应用 高能量密度电池需要电能量的应用装备大部分都使用传统的充电电池，这些电池的电池密度都很低需要不断地充电，由于纳米晶材料比传统的电池能够存储更多的能量，所以是电池的分离器的一个很好的选择。由纳米晶镍和金属氢化物制成的镍金属氢化物被认为是最不需要频频充电的反而能保持更长时间的材料。 大的电泳显示器装置电致变色器件包含光波段吸收材料，改变通过材料的电流或施加电场可改变已存在的光波段。它们和计算器以及手表里的液晶显示屏以及在公共场所被应用于传达信息的广告牌好信息栏有相似之处。分辨率，明暗度以及这些装备之间的对比都由钨酸粒子尺寸的大小决定的。因此，纳米材料，例如钨酸氧化物胶体，正是基于此目的的探索之中。