A series of R3 (Fe, Mo) 29 (R=Ce, Nd, Sm, Gd and Y) intermetallic compounds with Nd3 (Fe, Ti) 29-type structure have been successfully prepared with suitable compositions and annealing conditions, these compounds are identified as the 3:29 type compound according to the x-ray diffraction patterns. The lattice parameters are determined, and the intrinsic magnetic properties Tc, Ms and Ba are reported.

An investigation into the nature of the magnetocrystalline anisotropy of the compound Nd3 (Fe, Mo) 29 and its nitride has been carried out. AC susceptibility measurements, thermomagnetic analysis at low field (0.04T) and 57Fe M

In this paper, the structural characterization of the ternary phase Y3 (Fe, Mo)29 compound has been investigated in great detail by refi+L43nement of the X-ray diffraction pattern. The structural relationship of the 3:29 phase with 2:17 and 1:12 phases has been studied according to theoretical calculations and experimental results. The results show that the 3:29 compound belongs to A2/m. space group and the 3:29 compound is a kind of mixed structure of 2:17 and 1:12 structures.

In this paper, the electrochemical properties of MlNi4.3-xCoxA10.7electrode alloys, including high rate dischargeability, exchange current density 10, limiting current density IL, and diffusion coefficient of hydrogen in the hydride Da by means of linear polarization, anodic polarization, and electrochemical impedance spectroscopy were systematically studied. The results indicate that, with the increase of Co content, the cyclic stability is improved markedly, which agrees with previous investigation. However, activation becomes more difficult, and the high rate dischargeability decreases. The linear polarization and anodic polarization results suggest that the exchange 21 current density I0 and limiting current density IL decrease from the 395 (x=0) to 33mAg (x=1.3) and from 2263 (x=0) to 308mA g-1, respectively. The electrochemical impedance spectroscopy result also reveals that the diffusion coefficient of hydrogen in the alloys decreases rapidly with the increase in Co content in MlNi4.3-xCoxAl0.7 hydride alloy electrodes.

In this paper, the degradation mechanism of the Ti-V-based multiphase hydrogen storage electrode alloys (Ti0.8Zr0.2) (V0.533Mn0.107Cr0.16-Ni0.2)x (x=2, 4, 6) during electrochemical cycling has been studied systematically by using X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES) and electrochemical impedance spectroscopy (EIS). The reasons for the improvement in cycling stability of the electrodes with increasing x have also been discussed. The results show that the capacity degradation of the electrode is mainly caused by the following two reasons. The first one is the pulverization of the alloy particles during cycling, which leads to an increase in contact resistance and decrease in electric conductivity between alloy particles. The second one is the oxidation and corrosion/dissolution of the active alloy constituents in alkaline electrolyte during cycling, which leads to an increase in surface reaction resistance and decrease in discharge capacity of the alloy electrodes. With increasing x, the portion of stable and inactive hydride formed in the alloy during cycling decreases, and the pulverization resistance