共搜索到15848条信息,每页显示10条信息,共1585页。用时:0小时0分0秒343毫秒
Study on Diffusion of Hydrogen in AB5 Non-Stoichiometric Hydrogen Absorbing Alloys 彭文杰1,王志兴1,陈启元1,李新海1,郭华军1 (1.Department of Metallurgical Physico-Chemistry, School of Metallurgical Science..., the diffusion coefficient increases with the partial substitution of manganese or aluminum for nickel, which is related to the lattice constant and cell volumes of hydrogen absorbing alloys......
Application of Nanocrystalline LaNi5-type Hydrogen Absorbing Alloys in Ni-MHx Batteries Jurczyk M1,Nowak M1 (1.Institute of Materials Science and Engineering,Poznan University of Technology,60-965... of a nanocrystalline LaNi5-type hydride electrodes and a nickel positive electrode to form a Ni-MH battery, was successful. Key words:hydrogen absorbing materials; electrode materials; nanocrystalline materials......
......
......
Electrochemical Properties of Sn Doped AB5 Non-Stoichiometric Hydrogen Absorbing Alloys-Ⅱ 彭文杰1,王志兴1,陈启元1,李新海1,郭炳昆1,郭华军1 (1.Institute of Metallurgical Physico-Chemistry and Materials, Central South University of Technology,) Abstract:The effects of some substituting elements on the specific discharge capacity, activation and cycling life of AB5 non-stoichiometric hydrogen absorbing alloys were......
. These alloys are all complexes measured by phase structure analysis, in which LaNi3 phase is absorbing hydrogen phase, LaNi5 phase is catalytic phase, and the discharge capacity directly depends... at 900 ℃ for 4 h, the discharge capacity of the alloy is more than 380 mA?h/g at 0.2C, and it has better cyclic stability. 2) The hydrogen absorbing/desorbing pressure of the alloys increases, so......
of 750 mA?h/g at a current density of 20 mA/g for modified Mg2Ni alloys. However, the milled Mg and Mg-based alloys show very poor hydrogen absorbing and desorbing stability due to the fact... shortcoming and effectively avoide the significantdegradation of hydrogen absorbing and desorbing cycling properties of Mg and Mg-based alloys[18]. SPASSOV et al[19] prepared Mg2(Ni,Y) hydrogen storage......
Microwave absorbing properties of La0.8Ba0.2MnO3 nano-particles ZHOU Ke-sheng(周克省), DENG Jian-jie(邓建杰), YIN Li-song(尹荔松), MA Shi-hong(马诗宏), GAO Song-hua(高松华) School of Physics Science... and the crystal structure is perovskite when being calcined at 800 ℃ for 2 h. The microwave absorbing peak is 13 dB at 6.7 GHz and the effective absorbing bandwidth above 10 dB reaches 1.8 GHz......
]. It was documented that the hydriding and dehydriding kinetics of the Mg2Ni-type alloys are very sensitive to their structures [12]. Especially, their hydrogen storage properties are strongly affected... milling during the multiple hydrogen absorbing and desorbing cycles [13]. On the contrary, the microstructure created by melt spinning displays much higher stability during the hydrogen absorbing......
Characteristic Investigation of Nano-Crystal Hydrogen Storage Alloys Tang Renheng1,Lu Qiyun1,Xiao Fangming1,Huang Lili1,Peng Neng1,Wang Ying1 (1.Rare Earth Materials Research Center, Guangzhou Research Institute of Nonferrous Metals, Guangzhou 510651, China) Abstract:A Ml (NiCoMnA1)5 hydrogen storage alloys was prepared by double-roller rapid quenching.Its microstructure, electrochemically......