采用总体能量平面波赝势方法，并结合超软赝势技术，计算了金属La、Ni及合金LaNi5的总体能量、能带结构、电子态密度以及Mulliken布居值。根据计算结果，分析了La 、Ni和LaNi5的电子结构。结果表明：形成合金后费米面能量位置漂移，介于Ni和La的费米面之间，费米面上主要是Ni3d电子；费米面附近导带的电子结构变化较大；合金中La和Ni间存在电子转移，形成了弱的La-Ni键，且带部分离子性；与纯金属相比，形成合金后La的稳定性增强，而Ni的稳定性减弱。计算了LaNi5的理论生成热，结果能较好地符合实验值。

利用等离子体技术对22型MH/Ni电池的储氢合金电极进行了镀覆导电膜层的表面修饰，用XRD及SEM对电极结构进行了表征。极片经过表面修饰的电池，其内阻降低了24%放电容量有了明显提高，5C（7.5A）放电容量提高了200mA·h，放电平台电压提高了约0.14，导电膜层还起到了电极保护层的作用，抑制了合金的粉化，提高了电池的循环稳定性。同时，电池内压显著降低，电池性能有了较大改善。

Nano-scale SnO2 powders were prepared by hydrolyzation. Graphite was poured into the SnCl4 solution during hydrolyzation. After drying and calcining at 360℃, the negative electrode composite material of nanosized SnO2 and graphite was obtained. The composite materials were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The average erystallite size was in the range of 15-20nm. Electrochemical lithium insertion/extraetion was studied preliminarily on the obtained composite. The discharge capacity of nanosized SnO2/graphite composite was found to have a high electrochemical reversible capacity for Li-ion insertion and extraction, which possessed the advantages of both higher discharge capacity of SnO2 and lower discharge potential of graphite. In addition, the cycle capability was also improved due to the inhibiting effect of the composite against pulverization and agglomeration to a certain extent during Li-ion insertion and extraction.

制备了二（三氟甲基磺酸酰） 亚胺锂[Li N（SO2CF3）2，Li TFS I]与乙酰胺和乙烯脲形成的新型室温熔盐,分析了其热学和电化学性能。L iTFSI-乙酰胺体系的热学稳定性好，低共熔温度为-62.18℃。电化学测试表明，L iTFS I2乙酰胺体系的电导率较高，n（Li TFS I）：n （Acetamide）= 1：6.5样品的室温电导率为1.08×10-3 S/cm ，60℃时电导率为5。35×10- 3 S/cm; 摩尔比为1：4.0样品的电化学稳定电位窗为3V左右。

The new room-temperaturemolten saltwas prepared based on LiTFSI[LiNC (SO2CF3) 2] with OZO (C3H5NO2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential scanning calorimetry, ac impedance spectroscopy and cyclic voltammertry respectively. The results indicated that the structure symmetry of the molecule was depressed and the extent of charges delocalization w as expanded, because of introducing oxygen atom of differential electronegativity in OZO molecule. DSC analysis show ed that the LiTFSI-OZO molten salt has the excellent thermal stability and its eutectic temperature is below about 223.15K. Meanw hile, the conductivity of LiTFSI-OZO molten salt at a molar ratio of 1∶4.5 is 0.75×10-3S/cm at 298.15 K and 3.50×10-3S/cm at 333115 K. CV analysis show ed that the electrochem icalw indow of the samp le is about 4V.