The,main,purpose,nanocrystalli business, insurance The main purpose of nanocrystalline silicon
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Nano carbon and siliconhave high purity, small particle size distribution, high surface area and othercharacteristics, melting point as high as 1410, boiling point is 235,ionization energy is 8.151 eV, nano silicon with non-toxic, tasteless, highsurface activity and other characteristics, is a new generation ofoptoelectronic semiconductor materials, with wide energy gap semiconductor, alsoa high-power light source material.Accordingto metal powdersupplier, nanometer silicon powder,ultrafine silicon powder prepared by a special process, high purity, gooddispersion, small particle size, distribution, specific surface area, highsurface activity, low bulk density, good activity and other characteristics. Nanometersilicon CW-Si-001 can be composited with graphite, carbon nanotube, made of negative electrode material of lithiumion batteries, can be improved capacity and cycle times of lithium ionbatteries, extended service life, is a new generation of optoelectronic semiconductormaterial, with wide gap energy.Nanometersilicon powder made of silicon nanowires used in rechargeable lithium batteryanode materials, or coated graphite in nano-silica surface used forrechargeable lithium batteries anode material, improved the rechargeablelithium battery three times more capacity and charge-discharge cycles. Due tothe high absorption rate of nanometer silicon to lithium batteries, the nanosilicon for lithium batteries can significantly improve the capacity of lithiumbatteries (in theory can reach 4000mA/h), while taking advantage of the world'sadvanced technology, coated graphite in nano-silicon powder, consist of Si-C compositecomponents, can effectively reduce the expansion of silicon absorbing lithiumions, and increase the affinity with the electrolyte, ease of dispersion,improved cycle performance.Lithium-ionbattery with the characteristics of high voltage, high specific energy, nomemory effect, no pollution, etc., has become one of the main options of the21st century green battery. Currently commercially used lithium-ion batteryanode material are mainly the carbon-based negative electrode material, but thetheoretical capacity of carbon is too small to meet the next generation of newcathode materials requirements for lithium ion batteries high capacity.Therefore, developing new non-carbon anode materials has great significance to lithium-ionbattery development.Forthis, the nano-material manufacturers after years of painstaking study had produced30-50 nm size, 99% nano silicon powder, the powder is used as a negativeelectrode material of lithium ion batteries, to replace the traditionalgraphite material. Early tests have proved successful nanometer silicon metalpowder has good capacity performance, is 3-5 times of the graphite products now.After putting a lot of production, it is foreseeable needs a lot of nano silicon powder.LiBanode materials have many types. Carbon material is that people first began tostudy and apply in LiB production anode material, now is still the focus of everyonesattention and study. The successful application of carbon anode materialspromotes the rapid development of lithium-ion batteries. Currently the negativeelectrode material used in lithium ion batteries is mainly carbon material,various carbon materials including hard carbon, mesophase carbon microbeads,natural graphite and carbon fibers. According to the structure and reservoircharacteristics of lithium, carbon materials can be divided into twocategories: graphite materials and non-graphitic carbon materials. Both of themdue to the microscopic structure different, its lithium storage mechanism andelectrochemical properties have very big difference.Source:http://www.mhcmp.com
The,main,purpose,nanocrystalli