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With the development of railway transportation, the request of the train itself is further improved, especially in the load and speed. With the increased speed, increased load, wear the train wheel flange also intensifies, at the same time, also aggravate the rail wear. The rims of the maintenance, replacement has caused huge waste, and the consumption of maintenance and replacement of rails is more beyond imagination. So, the train locomotive wheel flange lubrication on the imminent problem. The train locomotive flange lubrication refers to the lubrication measures in locomotive wheel and rail contact, the contact surface friction, reduce wear and tear on the train and railway tracks and loss of flange. The train locomotive wheel includes lubricating grease lubrication and…
Among all kinds of electrode materials of vanadium redox flow battery, graphite felt is the best comprehensive performance of electrode material, but it still needs to be activated to enhance its performance. As one of the most important parts of vanadium battery, electrode and its related characteristics, including cost and processing technology, have become the key aspects of the research and development of vanadium battery system. Choosing appropriate electrode materials can improve the electrochemical activity of the electrode, and ultimately improve the energy efficiency of vanadium battery. Vanadium battery electrode materials are carbon, such as graphite, carbon cloth, carbon felt, etc., there are metals, such as Pb, Ti, etc., there are conductive polymer or polymer mixture composite electrode. But from…
Electrode is one of the key materials of the liquid flow battery, the main function is to provide the electrochemical reaction place, and it has a certain catalytic effect. Polyacrylonitrile (PAN) based graphite felt by numerous graphite fibers, the real surface area is far greater than the geometric surface area, good electrical conductivity, graphite fiber is small, the number of unsaturated carbon atoms in the fiber surface edge and the edges and corners, widely used as electrode materials for liquid flow. Wind energy, solar energy, tidal energy and other green pollution-free renewable energy development and utilization, so that high efficiency, long life, low cost of large-scale efficient storage battery energy storage equipment is particularly important. The active specific surface area…
