A 700 W·h·kg-1 Rechargeable Pouch Type Lithium Battery

High-energy-density rechargeable lithium batteries are being pursued by researchers because of their revolutionary potential nature.Current advanced practical lithium-ion batteries have an energy density of around300 W·h·kg^-1.Continuing to increase the energy density of batteries to a higher level could lead to a major explosion development in some fields,such as electric aviation.Here,we have manufactured practical pouch-type rechargeable lithium batteries with both a gravimetric ene...     

X射线荧光光谱法测定锆合金中6种主元素和杂质铜元素的含量北大核心CSCD

锆是一种较为稀缺的有色金属,和其他金属制备的合金相比,锆合金的应用范围窄,国家标准规定的合金牌号只有6个[1]。其中,Zr-0、Zr-2、Zr-4用于核工业领域,Zr-1、Zr-3、Zr-5用于一般工业领域。近期中国核动力研究设计院研制出用于核工业领域的N36锆合金,其主成分为铌、锡、铁,含量介于Zr-4和Zr-5之间。