(1. 哈尔滨工业大学 材料科学与工程学院， 哈尔滨 150001;
2. 清华大学 机械工程系， 北京 100084)
摘 要: 通过对储氢材料储氢过程特点的分析，自行设计安装了一套测量储氢材料储氢性能的装置。 利用该装置在恒容条件测试具有不同初始氢气压力的吸氢动力学曲线， 以双排水法测试放氢动力学曲线， 并可通过合适的步骤，测得储氢材料的PCT曲线。 用该装置对机械球磨获得的镁基储氢材料（Mg-Ni-MnO2）进行储氢性能测试。结果表明： 该测试装置设计合理， 测试过程可靠； 由机械球磨获得的镁基储氢材料的吸放氢动力学性能优异， 其PCT曲线表明其吸放氢的滞后性小， 在吸放氢循环过程中能量损失小。
关键字: 储氢材料；动力学； 测试； 滞后
（1. School of Materials Science and Engineering,
Harbin Institute of Technology, Harbin 150001, China;
2. Deparment of Mechanical Engineering,
Tsinghua Univeristy, Beijing 100084, China）
Abstract:According to analysis of the main content (thermodynamics and dynamics) of the hydrogen storage properties for hydrogen storage material, an apparatus for measuring hydrogen storage properties was designed and assembled. The curve of the hydride dynamics under differently original pressure of hydrogen was measured in the constant container, and the curve of dehydride dynamics was measured through the method of double-drainning; the curve of PCT could be attained too. The properties of Mg-based （Mg-Ni-MnO2） composite prepared by mechanical milling was measured. The result indicates that, this design principle of the apparatus is reasonable; the hydriding and dehydriding kinetics properties of Mg-based composite prepared by mechanical milling are excellent. The PCT curve indicates that the hysteresis is little in hydriding and dehydriding, and the loss of energy is little too.
Key words: hydrogen storage material; kinetics; measurement; hyst
