Brief description is made of the latest development of lithium ion battery, a new generation of rechargeable battery. In the paper is reviewed the current research of several kinds of cathode materials LiCoO2, LiNiO2, LiMn2O4, LiFePO4 and Li -V oxides, etc.

Description is made of the preparation method, applications and future development of Ti - based dimensionally stable anode （DSA）-one kind of new anode.Among all kinds of metal - based DSAa,Ti - based one has widely found its applications in industry because of its long service life, high electro - catalysis properties without secondary pollution. Its application in related industrial operations resulted in less energy consumption, lower cost, less pollution and effective control of industrial waste water, as accords with the requirement of clean production and can bring about tremendous economic and social benefits.

The paper reviews the superior performance of RE material combined with nanotechnology, focusing on the introduction of development and present application of RE nano - materials.

The paper reviews systematically the application of multi - wavelength and derivative way in the spectrophotometric analysis of tungsten.

Description is made of the tension and compressiontests, deformation and fracture behavior of Nb - Mo - W alloy with different content of W. Mo.O and C.

<Abstrcat>Study is made on the technical requirements for the tests and production of ultra-pure tantalum oxide/ultra-pure niobium oxideDescription is made of the bench-scale tests,pilot tests and commercial-scale tests on the ultra-pure tantalum oxide/ultra-pure niobium oxide.It also describes the technical index and its application.

Based on concentration-pH graph,study is made of relationship between pH and equilibrium concentration of some representative metal ion in the solution containing CO^2-_3.In terms of thermodynamic analysis,the characteristic and the pH conditions of carbonate deposition,the possibility of separating metals by the process of carbonate deposition is discussed.

Preliminary feasibility study is made of extracting Ga、Nb、Li and Sc from bauxite ore containing rare metals.Research is made on the process of bauxite ore sintering,followed by agglomerate alkaline pickling,residue acid leaching.The result showed that over 90% of gallium goes to leachate together with Al.Sc and Nb is upgraded from acid-leach residue.Sc can be quantitatively dissolved into concentrated HCl with Nb difficult to dissolve and Li distributed in alkaline/acid leach solutions.The test results showed that extracting of gallium、scandium、lithium and niobium from bauxite ore is technically feasible.The key factor lies in economic feasibility.It is suggested to put in red mud pretreatment in order to reduce the cost of extracting rare metals.

<Abstrcat>Study is made on the effects of mixed carbon content on the spark plasma sintering binder-free nanostructured WC cemented carbides in respect of the sintering behavior,phase make-up,densification,hardness and grain size.The results showed that direct sintering of pure nano-WC resulted in 300～400 nm sample with high densification and hardness,but the main phase changed into WC_1-x and W_2C.With 0.05～0.25% carbon mixed,there is a little WC_1-x.With 0.4% carbon mixed,correct phase can be got.With 0.5% carbon mixed,free carbon appears.After ball mixing,the powder can be sintered at lower temperature and when sintering at 1 800 ℃ the grain grows rapidly and unevenly.

<Abstrcat>W-15Cu dual-phase pseudo-alloy is produced from different particle sized W powder by infiltration.The thermal conductivity is measured and SEM is used to observe the copper network.The effect of tungsten particle size on the sintering and thermal conductivity of W-15Cu is analyzed in this article.