The features of graphite powder
are soft, dark gray; oily feel that can contaminate the paper. In the
isolated oxygen conditions, the melting point above 3000 ℃, is one of
the most resistant minerals. At room temperature, the chemical
properties of graphite powder are relatively stable, insoluble in water,
dilute acid, dilute alkali and organic solvents; different high
temperature reaction with oxygen to produce carbon dioxide or carbon
monoxide. It only oxidizes with fluorine and simple carbon in the
halogen. Graphite powder is easier to acid oxidation. Besides, it can
also react with many metals to form metal carbide, which can be smelted
at high temperature.
Graphite powder is the necessary raw materials
for industrial production and application. The application of graphite
powder has begun to move to the more high-end, which has launched a
variety of applications, such as in electronics, new energy, high-end
manufacturing, medical and other fields. LED lamps is the environmental
protection and energy saving lamps recent years that LED lights cooling
is the need to solve the problem of graphite powder.
LED lamps and
lanterns of the poor heat can lead to damage to power, light failure
accelerated, shortened life and other issues, LED lighting system
performance is always the top priority, metal materials in the
application of LED cooling difficult to process, energy consumption,
density is too large, conductive, easy to deformation and difficult to
recover waste and many other issues, and graphite powder material will
not be such a problem, graphite powder plasticity is good, easy
processing, and has excellent high temperature, thermal conductivity and
other properties. Graphite powder can be processed into the graphite
heat sink, the heat emitted by the lamp will be absorbed through the
graphite heat sink, and even to the surrounding heat, graphite powder
and plastic can also be made into a heat sink, cooling the cooling cup
and cooling shell and so on.
There are many cooling performance in
the application of LED lights, including LED chip packaging components,
LED optical lens, light scattering components, efficient cooling
components, light reflection and light diffusion board. Graphite powder
of high-end products plays an important role in the solar transparent
electrode, thermal materials and touch screen and other fields.
Related reading:graphite nanoparticles graphite nano powders
Monday, November 27, 2017
Germanium nanopowder
In recent years, lithium-ion batteries as its main energy storage system has been widespread concern, the development of high energy density, high power density and long life capacity of high-performance lithium-ion battery research has gradually become a hot research.
Recently, alloy lithium-containing negative electrode materials (including silicon, germanium, tin-based anode materials) with higher lithium capacity have become the most promising alternative materials for future graphite-based negative electrode materials. The structural design of these materials at the nanometer scale can effectively improve the electrochemical cycle and magnification performance of these materials, and fully demonstrate its promising application prospect in the next generation high performance lithium ion battery.
Germanium has a higher electrical conductivity and lithium ion diffusion than silicon, so germanium is a powerful candidate for high-power lithium-ion battery anode materials. At present, the researchers try to prepare a variety of germanium nano structured materials to improve their electrode performance. Korean scholar Park and so on to obtain zero-dimensional hollow germanium nanoparticles and three-dimensional porous germanium nanoparticles, showing better cycle performance.
Also, researchers at the University of Munich, Germany (TUM) and the University of Munich (LMU) have discovered a new method of making thin, solid, and porous semiconductor layers using nano structured germanium materials that are expected to be used to develop portable solar cells and batteries electrode.
This material is very suitable for small, lightweight and soft solar cells, or to improve the performance of rechargeable batteries electrode. Scientists by integrating the amount of organic polymers in the pores of germanium materials can be tailored to create the electrical properties of the symbiotic mixture. This design not only saves space, but also create a large interface surface, enhance the overall performance. In the porous porous germanium nanometer film filled with the right amount of organic polymer, making it a hybrid solar cell。
Manufacturers around the world are looking for light weight, sturdy materials, and portable solar cells. So far they are mainly used for organic compounds, which are sensitive and have a relatively short life span. Heat and light decomposition of the polymer and result in reduced performance. The thin but strong germanium mix provides a real choice.
Related reading:nano germanium powder Nano Innorganic Germanium Powder
Recently, alloy lithium-containing negative electrode materials (including silicon, germanium, tin-based anode materials) with higher lithium capacity have become the most promising alternative materials for future graphite-based negative electrode materials. The structural design of these materials at the nanometer scale can effectively improve the electrochemical cycle and magnification performance of these materials, and fully demonstrate its promising application prospect in the next generation high performance lithium ion battery.
Germanium has a higher electrical conductivity and lithium ion diffusion than silicon, so germanium is a powerful candidate for high-power lithium-ion battery anode materials. At present, the researchers try to prepare a variety of germanium nano structured materials to improve their electrode performance. Korean scholar Park and so on to obtain zero-dimensional hollow germanium nanoparticles and three-dimensional porous germanium nanoparticles, showing better cycle performance.
Also, researchers at the University of Munich, Germany (TUM) and the University of Munich (LMU) have discovered a new method of making thin, solid, and porous semiconductor layers using nano structured germanium materials that are expected to be used to develop portable solar cells and batteries electrode.
This material is very suitable for small, lightweight and soft solar cells, or to improve the performance of rechargeable batteries electrode. Scientists by integrating the amount of organic polymers in the pores of germanium materials can be tailored to create the electrical properties of the symbiotic mixture. This design not only saves space, but also create a large interface surface, enhance the overall performance. In the porous porous germanium nanometer film filled with the right amount of organic polymer, making it a hybrid solar cell。
Manufacturers around the world are looking for light weight, sturdy materials, and portable solar cells. So far they are mainly used for organic compounds, which are sensitive and have a relatively short life span. Heat and light decomposition of the polymer and result in reduced performance. The thin but strong germanium mix provides a real choice.
Related reading:nano germanium powder Nano Innorganic Germanium Powder
Wednesday, November 1, 2017
How to choose the right optical module
With the rapid
development of information technology, the application of optical
communication has become more and more popular. With the advantages of
large capacity and high-speed transmission, Fiber Optic Transceiver Modules
is playing a more and more important role. Where there is fiber, the
optical module is needed, and the selection and purchase of the optical
module has become the focus of the front-line engineering technicians or
purchasing personnel.
There are many types of optical transceivers on the market, often dazzling. So, how to choose the most suitable module in many different speed, different packaging, different functions of the Optical Transceiver Module? We will give you some tips.
◆ Choose the module based on your usage environment
How fast the speed of transmission you need? 155M, 1G, 10G or 100G? The higher transmission rate means higher cost investment. For example, the application environment of FTTH, it's enough to use about 1G speed products for current bandwidth. It's not necessary to choose 10G products with more money.
◆ Transmission distance
The common optical modules are divided into short distance (300M-2KM), middle distance (10KM-40KM), long distance (>40km), The farther the transmission distance, the higher the technical and technological requirements of the optical module.
◆ Compatibility
When purchasing optical modules, need to confirm whether it can be compatible with your devices. Common switch brands like CISCO, HUAWEI, H3C, Juniper, D-link, HP, IBM, dell, Mikrotik etc., modules need to be tested compatibility before shipment. Before purchasing, it is best to confirm that it can be perfectly compatible with the corresponding brand switch.
◆ Select the original one or compatible one according to the budget situation
The original module is reliable but the price is too high, compatible module is cost-effective, comparable to the original module. Different users need to make specific choices according to the budget.
◆ After-sale service
Although the optical module is a mature optical communication device, most manufacturers' products are stable and reliable. However, there may be some problems in the use after purchase, so choose the vendors who have after-sales service and technical support are more secure.
Above are the factors that we often consider when purchasing optical modules, hope will be helpful to you. ETU-Link is a professional module manufacturer, we provide various module solutions to meet your different needs. For more details, welcome to visit our website: www.etulinktechnology.com.
There are many types of optical transceivers on the market, often dazzling. So, how to choose the most suitable module in many different speed, different packaging, different functions of the Optical Transceiver Module? We will give you some tips.
◆ Choose the module based on your usage environment
How fast the speed of transmission you need? 155M, 1G, 10G or 100G? The higher transmission rate means higher cost investment. For example, the application environment of FTTH, it's enough to use about 1G speed products for current bandwidth. It's not necessary to choose 10G products with more money.
◆ Transmission distance
The common optical modules are divided into short distance (300M-2KM), middle distance (10KM-40KM), long distance (>40km), The farther the transmission distance, the higher the technical and technological requirements of the optical module.
◆ Compatibility
When purchasing optical modules, need to confirm whether it can be compatible with your devices. Common switch brands like CISCO, HUAWEI, H3C, Juniper, D-link, HP, IBM, dell, Mikrotik etc., modules need to be tested compatibility before shipment. Before purchasing, it is best to confirm that it can be perfectly compatible with the corresponding brand switch.
◆ Select the original one or compatible one according to the budget situation
The original module is reliable but the price is too high, compatible module is cost-effective, comparable to the original module. Different users need to make specific choices according to the budget.
◆ After-sale service
Although the optical module is a mature optical communication device, most manufacturers' products are stable and reliable. However, there may be some problems in the use after purchase, so choose the vendors who have after-sales service and technical support are more secure.
Above are the factors that we often consider when purchasing optical modules, hope will be helpful to you. ETU-Link is a professional module manufacturer, we provide various module solutions to meet your different needs. For more details, welcome to visit our website: www.etulinktechnology.com.
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