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The activity of graphite felt electrode can be improved by electrochemical treatment, the increase of the electrode activity is attributed to the increase in the number of functional groups on the surface of carbon fiber and the increase of the specific surface area of the COOH. The small capacity of the battery has been successfully applied in human life, further research and development of new environmentally friendly battery suitable for large-scale energy storage, development and utilization of new energy sources, will have great social and economic significance. All vanadium redox flow battery can be regarded as the representative of the new energy storage battery, compared with other batteries it has a unique advantage. At present, the vanadium battery has been…
The graphite crucible has the advantages of large bulk density, high temperature resistance, fast heat transfer,resistance to acid and alkali erosion ,high temperature strength and high oxidation resistance, so the graphite crucible is often used to prevent corrosion. Although the graphite crucible with acid alkali resistant ability, but for individual raw materials refining,the cleaning of the crucible after using is very troublesome. The first cleaning work of the graphite crucible is cleaning the chemical substance out from the crucible and then we continue to clean, we decide which kind of material will be used to clean the graphite crucible according to the material what’s the residual material in the crucible, generally,the attachment on the graphite crucible is the residue after…
Graphite material has the characteristics of light weight, high temperature resistance and ablation resistance. It is the preferred material for the solid rocket motor (SRM) of small rocket, graphite nozzle. As early as 1947, the United States launched solid rocketsonde successfully using graphite throat liner, after gradually developed with ATJ as the representative of the first generation of high strength graphite throat liner material with high density and high strength graphite, G90 as the representative of the second generation of throat liner materials 1 - 2, with Graphnol of isotropic graphite as the representative of the third generation of throat liner material 3. At the beginning of 1960s, the research and development of SRM throat liner material with graphite and…
