Layered LiNi1/3Co1/3Mn1/3O2 materials were synthesized using a nickel2cobalt2manganese carbonate pre2 cursor obtained by chemical co2precipitation. The [Ni1/3 Co1/3 Mn1/3] CO3 precursor and the LiNi1/3 Co1/3 Mn1/3 O2 powders were characterized by X2ray diff raction (XRD) and scanning elect ron micrograph (SEM). The SEM analysis shows that these particles possess uniform and spherical morphology. The elect rochemical properties of the LiNi1/3 2 Co1/3Mn1/3O2 cathode material for rechargeable lithium2ion bat teries such as the galvanostatic charge2discharge per formance and cyclic voltammet ry(CV) were measured. The result s show that an initial discharge capacity of 190. 29 mA·h·g-1 is obtained in the voltage range of 2.5 4.6 V and at a current rate of 0.1 C at 25 ℃. The discharge capacity increases linearly with the increase of the upper cut2off voltage limit.

作为一种新兴的微粉制备工艺,喷雾热分解技术（SP）已广泛应用于各种功能材料的制备。本文介绍喷雾热分解工艺过程及特点，对近年来SP在发光体材料、超导陶瓷、催化剂、锂电池正极材料等功能材料中的最新研究进展予以综合评述，对其前景作了展望。

The coatings of W-Ti carbides on the surface of diamond was obtained by using physical vapor de-position (PVD), during which WO3 powders pre-treated with hydrofluoric acid were reduced by titanium hy-dride in vacuum at 850℃. The resistance of diamond to corrosion at high-temperature was investigated. The formation of W-Ti carbides on the surface of diamond was verified by X-ray diffraction analysis, the interface state between diamond and matrix in metal-base diamond composite was observed by scanning electron micro-scope. The results showed that the carbide coating is easy to be formed at low deposition temperature on the surface of diamond, while the resistance of diamond to corrosion at high-temperature and the strength of bond-ing between diamond and metal matrix are effectively improved.

On the basis of serial laboratory research and industrial test, the mechanism of saving energy and reducing carbon consumption of property2modified prebaked anode in aluminum electrolysis was discussed. It is considered that the anodic over voltage is affected by the concentration of carbon monoxide surrounding anode. The property2modified prebaked anode can restrain the production of carbon monoxide. The reason of reducing carbon consumption was also ana lyzed, the result shows that besides physical action, chemical action also exists in the process where additives change the reaction rate of anodes.

用均一沉淀法在金刚石表面沉积二氧化钛，探讨了沉积工艺条件。覆层在高温和真空条件下被还原为单质金属钛，X 射线衍射分析表明金刚石表面有钛和碳化钛生成。