Activated carbon fiber felt is a kind of high efficient adsorption material which is made of man-made fiber by low temperature carbonization, high temperature carbonization and activation. The product has abundant micropores and high specific surface area, low acid, alkali and ash content, good conductivity and chemical stability; the product has not only excellent adsorption performance, but also has good ability of reduction, adsorption and desorption speed, it can be used repeatedly. This product is mainly used for organic solvent recovery, air purification, sewage treatment, medical care, protective clothing, electronic and energy field, corrosion resistance and high temperature resistance environment.

　　The material can be used for making air filter, activated carbon fiber felt can adsorb the O3 ,SO2 and NO2 in the air and other harmful gases, such as odor, toxic gas, and smoke, etc., and it can be used for cleaning indoor air, kitchen utensils and other polluted indoor air.

　　The features of the activated carbon fiber are as follows:1). 800-1600m2 specific surface area, with abundant neatly arranged adsorption micropore (micropore volume accounted for about 80% of the total pore volume) pore diameter is 10-40A. 2). It contain abundant organic functional groups and has good redox properties and excellent adsorption function of organic substances and inorganic impurities in both gas phase and liquid phase. It has good performance of desorption and regeneration, and can be reused. 3). High strength, low consumption, good filling performance and adaptability, winding equipment.it will not produce loose and excessive packing phenomenon under the vibration.4).It has the property such as acid and alkali resistance, corrosion resistance, high and low temperature resistance and good conductivity.

　　We also can produce the fiber-type activated carbon filtration net or cell foam activated carbon filtration net products.the high quality activated carbon powder is adhered on the fiber filter cotton substrate by the high molecular material. The product not only has the function of filtration, but also it can remove the harmful substances such as benzene,formaldehyde and others in the air effectively,and the absorption rate of the benzene is about 95%. It’s mainly used in air conditioning, air cleaners, water purification and gas adsorption, etc..

　　The rigid composite graphite felt is based on PAN based carbon felt as the base material after above 2200 degrees high temperature graphitization treatment, and then treated through carbonization and graphitization by special adhesive composite.

　　The rigid composite graphite felt has certain rigidity, self support, the proportion of small, low thermal conductivity, no fiber shedding and the using temperature can reach 3200 DEG C. It’s suitable for various types of furnace types such as high pressure gas quenching furnace, pressure sintering furnace, polycrystalline casting furnace, single crystal growth furnace (sapphire), etc. the utility model can provide various shapes such as flat plate, disc and cylinder, etc. It has the advantages of long service life, it’s convenient to install and dismantle.

　　The biggest feature of our rigid composite graphite felt compared with the similar products are: high treatment temperature, low impurities, high purity (<200ppm) it is especially suitable for high temperature furnace which has the high furnace atmosphere requirements; high temperature heat insulation material provides excellent thermal properties and high mechanical strength, it can be customized according to the drawings; maximum standard board on the market, the utilization rate is high (1500*1200* thickness according to customer requirements, the error is + 2); coverage /coating (①Attaching the graphite sheet on the surface or putting the graphite sheet between the material, ②SiC coating on the surface , ③pasting the carbon cloth on the surface); excellent thermal insulation property; the purity is less than 200ppm after 2200 DEG C high temperature; it’s applicable to all kinds of vacuum furnace, induction furnace, polycrystalline ingot furnace; it has high corrosion resistance and it’s easy to process.

　　Our products involved in the field of aerospace, vacuum metallurgy, solar new energy, new chemical materials, we are the manufacturer which is specializing in the production of rigid composite graphite felt and high temperature and high purity graphite felt materials for domestic in China. The main products are carbon felt, graphite felt,rigid composite graphite felt and the auxiliary products such as carbon cloth, carbon rope and so on ,our products are widely used in all kinds of high temperature vacuum furnace equipments such as single crystal growth furnace, polycrystalline casting furnace, polycrystalline furnace, vacuum sintering furnace, hot pressing furnace, heat balance furnace and electric magnetic induction furnace ,non-oxidizing atmosphere high temperature equipment and high purity silicon hydrogenation furnace etc..

　　Flow battery is to achieve large-scale renewable energy application of new green secondary battery two, the performance of electrode materials has important significance for the practical application of the flow battery, PAN based graphite felt electrode material is the preferred flow battery, in order to further improve the hydrophilicity and electrochemical activity of the modified Shi Mozhan electrode materials, graphite related research in recent years the carpet has become a hot spot.

　　Energy storage technology is very conducive to the balance between energy production and consumption between the control in power, plays an important role in the integration of renewable energy and other areas, as one of the electrochemical energy storage technology flow battery, the redox flow battery, with current conversion capability, flexible structure design, reasonable cost, operation simple, is a new type of green two battery suitable for large scale electricity storage.

　　Carbon fiber, also called graphite felt, is made of carbon fiber after pre oxidation by lapping process of acupuncture, felt body made of carbonization process, graphite felt is a low strength carbon fiber products, has the advantages of low density, low linear expansion coefficient, low thermal capacity, small thermal conductivity, high temperature resistance thermal shock resistance, strong resistance, chemical corrosion resistance and excellent high temperature, is widely used in industry, energy industry, auto industry, chemical and environmental protection.

　　Graphite felt is the first choice of electrode material for liquid flow battery, but its electrochemical activity and hydrophilicity can not fully meet the requirements of liquid flow battery.

　　The electrochemical activity of graphite felt is not high and the poor hydrophilicity, so graphite felt modification has become an important means to improve the properties of electrode materials, the modified method is mainly to increase the graphite felt surface oxygen and deposited on the Shi Mozhan surface catalytic material, and surface morphology of carbon felt, produce different effects of chemical composition and electrochemical performance, and improve the properties of liquid flow battery.

　　The bipolar plate used therein are required to achieve higher electrical conductivity due to the requirements for redox flow batteries have become more and more stringent in recent years.and thus A bipolar plate composed of an electrically conductive composite achieves a higher electrical conductivity by increasing the conductive filler content in the material.

　　Graphite was used as one of the main bipolar plate material in redox flow batteries due to its high electrical conductivity ,low weight and good chemical stability in the past.Graphite blocks were produced by sintering process and plates were machined to desired sizes.The main limitation of this method was the porosity of produced graphite plates.

　　At present, our company provides a bipolar plate for a redox flow battery , the bipolar late including an electrically conductive composite prepared by mixing a thermoplastic resin ,a carbonaceous material selected from graphite and carbon black ,and a carbon nano-tube.

　　Our current business is extended from the overall solution of the material to the manufacture of bipolar plates, and thus provides the following three VRB assembly services:

　　1).The bipolar plate (we can provide punch service. The thickness of the bipolar plate now can be processed are 0.6/0.8/1.0 /1.2/1.3mm.

　　2).The composite of the bipolar plate and the electrode, the advantage is that the electrode felt is fully combined with the felt in the plate, it greatly reduces the theoretical value of the contact resistance to the felt.

　　3).The bipolar plate ,the electrode and outline border. Three in one frame after embedding flow

　　box (precision injection), it’s the way which improve the reliability greatly compared with the above 1 and 2.

　　Polyacrylonitrile (PAN) based graphite felt , made of PAN precursor in an inert gas in high temperature and antipyretic have a variety of forms, such as continuous products, carbon fiber, short carbon fiber and short carbon fiber. It has many applications in engineering because of its excellent physical and chemical properties and electrical conductivity. Continuous carbon fibers are often used in resin matrix composites as reinforcements.

　　The most widely used short cut carbon fiber is a small amount of chopped carbon fiber mixed with concrete, forming carbon fiber concrete, which has a variety of functional characteristics such as pressure sensitivity, temperature sensitivity, thermoelectric and electrothermal effects. Based on the above features, carbon fiber reinforced concrete materials can be used in the temperature and deformation self diagnosis and adaptive aspects of concrete structures, such as intelligent deicing and snow melting system of concrete pavement [5]. But the production process of continuous carbon fiber is relatively complex, the price is higher; and the short cut carbon fiber mixed with concrete, need the chopped carbon fiber completely uniformly dispersed in the concrete, it is a big problem in materials, the functional properties of carbon fiber reinforced concrete material is affected, especially the heating effects the size based conductive network formation in carbon fiber, namely by carbon fiber components reduce the concrete resistance and Joule heat.

　　Graphite felt is a soft cloth formed by the bonding of chopped carbon fibers, and each fiber forms a conductive network with each other. In the concrete smart materials, because the carbon fiber felt easily cut into the desired shape size, sample only need to be paved in concrete.

　　PAN based graphite felt with electrothermal effect good and stable; the thermal efficiency of carbon fiber of different types are different, therefore, can choose the optimal thickness, to achieve efficient and economic purposes; in a certain temperature range, the temperature stability of PAN based graphite felt the rise and the input power is proportional to the input power can be selected according to the need the temperature rise; graphite felt with a temperature sensitive effect, linear resistivity increased with the temperature of graphite felt decreases, this effect can be used for temperature detection structure; combined with temperature sensitive effect and heating effect, is expected to realize the adaptive temperature regulating structure.

　　Ammonia decomposition produced by urea nitrogen doping on graphite felt, preparation of nitrogen doped graphite felt, compared with nitrogen doped graphite felt and graphite felt has more excellent electrochemical performance, and doping temperature and doping time have influence on the electrochemical activity of graphite felt.

　　Proton exchange membrane fuel cell (PEMFC) has many advantages, such as high power density, low working temperature, fast start and long service life, but hydrogen storage is used as fuel.

　　Graphite felt is the main cathode material of direct flow methanol fuel cell, and its performance is very important for direct flow methanol fuel cell. Graphite felt has the advantages of good stability, large surface area under unit cost, good fluid permeability, etc. but its application is limited because of its poor hydrophilicity and low electrochemical activity.

　　Commonly used acid treatment, heat treatment, electrochemical oxidation, nitrogen doping and other methods. Due to nitrogen doping not only improves the surface chemical activity of graphite felt, but also on the electronic structure of regulation, so in recent years, nitrogen doped graphite felt in many electrochemical devices exhibited electrocatalytic properties better than graphite felt no nitrogen doping of this study is based on previous achievements.

　　The ammonia produced by hydrolysis of urea by nitrogen doping treatment on graphite felt, has an important influence on the electrochemical activity of the cathode temperature,nitrogen doping does not change the crystal structure of graphite felt, but will affect the crystallite parameter.

　　there will not be much affected the overall morphology of nitrogen doped under certain conditions on the graphite felt mat, the nitrogen content of graphite are improved in nitrogen doped after nitrogen increased mainly pyrrolic nitrogen and pyridine type nitrogen, indicating the increase of no contribution even inhibit the electrochemical activity of graphite nitrogen on graphite felt, pyrrolic nitrogen and pyridine type nitrogen is the main reason to enhance the electrochemical activity of graphite felt the.

　　Vanadium battery is a new type of energy storage battery developed in recent years, because of its high energy efficiency and long service life.

　　Environmental friendly and cheap, operating and maintenance costs low, many of the characteristics of the rapid development of. But at present, there are some problems in vanadium battery. There are many factors that affect the performance of vanadium battery, including the electrode material performance, the positive and negative electrode reaction is an important factor.

　　Graphite felt has a series of excellent properties, such as high specific strength, high specific modulus, high temperature resistance, corrosion resistance, conductivity and thermal expansion coefficient, so it is used in the field of vanadium battery. However, it is found that the active surface area is smaller than the surface area, the surface energy is low, and the wettability is poor.

　　By low temperature liquid phase oxidation method for surface oxidation of graphite felt, with different concentration and Potassium Permanganate solution at different temperature and acid solution on Potassium Permanganate graphite felt for processing, to obtain the performance of graphite felt electrode material excellent. The graphite felt surface becomes smooth after Potassium Permanganate solution treatment.

　　The surface polar groups of the graphite felt treated by different Potassium Permanganate solution increased, and the hydrophilicity was improved. Graphite felt on the surface in the process of Potassium Permanganate solution deposition on the Potassium Permanganate, is not conducive to V (IV) in the above reaction.

　　Another way to improve the activity of graphite felt is to deposit metal or metal oxide on the surface of graphite felt. Transition metal oxide or semiconductor compound.