CAS 7440-05-3 Pd nanopowder Ultrafine Palladium as catalyst
Size:20-30nm Purity:99.95% CAS No:7440-05-3 ENINEC No.:231-115-6 Appearance:black Powder Shape:spherical
Size:20-30nm Purity:99.95% CAS No:7440-05-3 ENINEC No.:231-115-6 Appearance:black Powder Shape:spherical
We can supply different size products of niobium silicide powder according to client's requirements. Size:1-3um; Purity:99.5%;Shape:granular CAS No:12034-80-9;ENINEC No.:234-812-3
Ni2Si particle,99.5% purity,granular shape,is used for Microelectronic integrated circuit, nickel silicide film,etc. Size:1-10um; CAS No:12059-14-2;ENINEC No.:235-033-1
As one of the many thermal conductive materials, boron nitride is a unique one. Among the high thermal conductivity categories, it has high insulation, and among the high thermal conductivity and high insulation types, it is the cheapest. In the semiconductor industry's heat dissipation system, interface materials are the biggest bottleneck and the component with the lowest thermal conductivity. No matter what heat dissipation system you use, the bottleneck of interface thermal resistance will make the efforts of heat dissipation system engineers go to waste. The most promising alternative to alumina is boron nitride. The developed boron nitride thermal interface material has a longitudinal thermal conductivity of over 20 watts and a thermal resistance of 0.85k/cm2/w @ 1mm, surpassing all insulation thermal conductivity products, and achieving high flexibility and resilience. The production process is solvent-free. In laboratory simulation tests, compared with domestic 12 watt thermal pads, the heat source temperature drops by 23.5 ℃. In the application verification of optical modules, crush the carbon fiber thermal pad of foreign brands. Various indications suggest that replacing aluminum oxide with boron nitride is actually feasible. Of course, technological success does not necessarily guarantee market success. Currently, more and more material researchers are investing in the research of boron nitride, and there will always be someone who breaks through market barriers and brings new technologies and products to the market. The boron nitride industry will be a promising market, and domestic manufacturers should accelerate product research and development towards high purity, monocrystalline, large particle size, and low cost, in conjunction with the needs of thermal interface materials, to jointly promote industrial upgrading. SAT NANO is a best supplier of boron nitride powder in China, we can offer 100nm, 1-3um particle size, if you have any enquiry, please feel free to contact us at admin@satnano.com
Read MoreIn the explosive growth of new energy vehicles, energy storage power stations, consumer electronics and other fields, the "heart" of lithium batteries - the particle size of active materials - is becoming the core password that determines battery performance. From Tesla 4680 battery to CATL Kirin battery, from lithium iron phosphate to ternary positive electrode, the micrometer level adjustment of material particle size directly affects the charging and discharging speed, cycle life, and even safety boundary of the battery. Why are tech giants chasing the nanoscale? According to Fick's law, the diffusion time of lithium ions inside a particle is proportional to the square of the particle radius. Nanoscale particles (<100nm) shorten the diffusion path of lithium ions to 1/10 of that of micrometer sized particles, significantly reducing solid-phase diffusion resistance. For example, after reducing the size of lithium iron phosphate (LiFePO ₄) particles from 5 μ m to 100nm, the ion conductivity increases threefold, supporting high rate charging and discharging above 10C; ·The ternary cathode material (NCM) adopts nanoscale primary particle aggregates, which can maintain 85% capacity at a high temperature of 45 ℃. 2. The "dense network" of electronically conductive particles forms denser contact points in the electrode, theoretically improving the efficiency of electron conduction. Experimental data shows that the contact area of nanoscale lithium cobalt oxide (LiCoO ₂) particles increases by 40%, and the electrode resistance decreases by 25%; ·In the carbon nanotube composite negative electrode, the contact point density between nano silicon particles and conductive agent is increased by three times, and the efficiency exceeds 90% for the first time. 3. The "disruptor" of low-temperature performance exhibits faster lithium-ion deintercalation kinetics of nanoscale particles in a -20 ℃ low-temperature environment. According to actual testing of a certain brand of electric vehicles, batteries using nano positive electrodes can still release 85% of their capacity at -15 ℃, while traditional materials can only release 60%. 4. The small particle size of the "counterattacker" of cycle life can alleviate the concentration stress gradient during deep charging and discharging. According to data from Ningde Times Laboratory, the capacity retention rate of nano ternary materials reaches 82% after 3000 cycles, which is 15% higher than that of micron level materials. Small particle size 'fatal injury': how to solve the three major hidden dangers? 1. Agglomeration phenomenon: The high specific surface area (up to 100m ²/g) of nanoparticles from the "efficient channel" to the "island of death" leads to a significant increase in surface energy, making agglomeration highly likely to occur. For example, after the aggregation of nano lithium iron phosphate in the slurry, 20 μ m sized pores appear on the coated electrode, resulting in a threefold increase in local c...
Read More1、 Industry Status: Moving from Laboratories to Large Scale and Mass Production As the "super graphene" in the carbon material family, single-walled carbon nanotubes (SWCNTs) are widely used in cutting-edge fields such as lithium battery conductive agents, composite materials, flexible electronics, and optoelectronic devices due to their unique electrical, mechanical, and thermal properties, and have long been regarded as disruptive materials. However, in the past two decades, its development has always been limited by bottlenecks such as high preparation costs, difficult chiral control, and insufficient purity, mostly staying at the laboratory research stage. Some companies have already built production lines of tons or more, and their products have begun to enter the supply chain of battery companies, with a steady increase in market penetration rate. It can be said that the global SWCNT industry is still in a transitional period from "laboratory achievements" to "large-scale applications", with huge market potential, but quality stability and standardization system still need to be established. As a key turning point in 2025, research in related application fields has shown that certain quality fluctuations of single-walled carbon nanotubes have little impact on the final product performance. Therefore, in specific fields of application, the quality standards for carbon nanotubes can be relaxed to a certain extent, achieving a significant reduction in production costs. At the same time, with the explosive demand from downstream industries such as solid-state batteries, sodium batteries, and high-end semiconductors, single-walled carbon nanotubes are ushering in a historic opportunity for large-scale production: Accelerated capacity expansion: Currently, the global market is dominated by a few companies, and the competitive landscape is relatively concentrated. To alleviate supply pressure, domestic manufacturers are actively expanding production, accelerating equipment updates, and increasing research and development efforts. Surge in shipment volume: In the first half of 2025, the shipment volume of single wall slurry by leading domestic enterprises has reached 1000 tons, and it is expected to exceed 3000 tons for the whole year. It is expected to reach the 10000 ton level by 2026. 2、 Market driven: Wide range of application scenarios Single walled carbon nanotubes (SWCNTs) were initially mainly used in scientific research and niche materials fields, but as the new energy and semiconductor industries enter deeper waters, their market demand is accelerating. In terms of application technology, SWCNT slurry has become the mainstream product form. The amount of conductive agent added to the positive electrode of solid-state batteries is 3-5 times that of traditional liquid systems; In silicon carbon negative electrodes and lithium metal negative electrodes, it is an essential material that can effectively buffer volume expansion and maintain the...
Read MoreWith the development of integrated circuit (IC) technology, the scaling of silicon-based metal oxide semiconductor (MOS) field-effect transistors (FETs) is approaching their fundamental physical limits. Carbon nanotubes (CNTs) are considered promising materials in the post silicon era due to their atomic thickness and unique electrical properties, with the potential to improve transistor performance while reducing power consumption. High purity aligned carbon nanotubes (A-CNT) are an ideal choice for driving advanced ICs due to their high current density. However, when the channel length (Lch) decreases below 30nm, the performance of single gate (SG) A-CNT FET significantly decreases, mainly manifested as deteriorating switching characteristics and increased leakage current. This article aims to reveal the mechanism of performance degradation in A-CNT FET through theoretical and experimental research, and propose solutions. Academician Peng Lianmao, researcher Qiu Chengguang, and researcher Liu Fei from Peking University overcame the electrostatic coupling between carbon nanotubes (CNTs) through a double gate structure to achieve the Boltzmann switching limit of carbon nanotube transistors (CNT-FET). Research has found that high-density aligned carbon nanotubes (A-CNT) exhibit significant band gap narrowing (BGN) due to stacking in traditional single gate configurations, thereby affecting their inherent quasi one dimensional electrostatic advantages. Through theoretical simulation and experimental verification, an effective dual gate structure has been proposed, which can significantly reduce the BGN effect, achieve the subthreshold swing (SS) of A-CNT FET to the Boltzmann thermal emission limit of 60mV/decade, and achieve a switching current ratio exceeding 10 ^ 6. In addition, the prepared 10nm ultra short gate A-CNT dual gate FET exhibits excellent performance such as high saturation current (over 1.8mA/μ m), high peak transconductance (2.1mS/μ m), and low static power consumption (10nW/μ m), meeting the requirements of advanced integrated circuits. The related research results were published in ACS Nano under the title "Realizing Boltzmann Switching Limit in Carbon Nanotube Transistors through Combining Intertube Electrostatic Coupling". SAT NANO is a best supplier of carbon nanotube powder in China, we can supply SWCNT, MWCNT, DWCNT powder, if you have any enquiry of carbon nanotube powder, please feel free to contact us at admin@satnano.com
Read MoreIn recent years, with the continuous development and popularization of wireless communication technology, the application scenarios of wireless communication have become increasingly widespread, such as mobile phone communication, wireless data transmission, satellite navigation, Internet of Things, etc. In wireless communication systems, antennas play a crucial role in the performance and reliability of the system as important components for receiving and transmitting wireless signals. According to China Powder Network, there are three main ways to improve antenna performance: first, optimizing packaging technology, such as multi-layer circuit board packaging technology and semiconductor packaging technology; The second is to optimize the antenna structure, such as slotting, folding, short circuiting branches, and changing the feeding method of traditional antenna structures; The third is to optimize the antenna substrate material, such as using material composites, improving processes, and developing new materials to enhance the performance of antenna substrate materials. The first two technological means have been fully developed and gradually become bottlenecks, while there is still significant room for improvement in the performance of antenna substrate materials. In addition, as the packaging design and structural optimization of antennas are closely related to substrate materials, the development of excellent substrate materials is a key part of achieving antenna performance optimization. In May of this year, Huawei Technologies Co., Ltd. and the University of Electronic Science and Technology of China applied for a patent titled "A Magnetic Hybrid Material and Its Preparation Method, Polymer Composite Material, Antenna, and Electronic Equipment". The magnetic hybrid material includes a mixture of magnetic powder and viscosity regulating powder. According to the patent description, due to its high magnetic permeability and low loss characteristics, ferrite magnetic powder materials have become one of the key basic materials for antenna substrates, high-frequency microwave circuit boards, inductors, filters, and other devices in electronic devices. In related technologies, ferrite magnetic powder materials with high magnetic permeability and low loss characteristics are the key basic materials for antenna substrates. Therefore, in order to achieve low signal transmission loss, ferrite magnetic powder materials are used in antenna materials, which can reduce the physical size of the antenna while avoiding the adverse effects of using high dielectric constant magnetic powder materials on antenna operation, thereby improving integration. However, the above-mentioned ferrite material adopts a ferrite monazite structure, and the resonance peak position of the ferrite material is controlled by doping, so that the ferrite material is completely sintered into an antenna substrate for use. When sintering the ferrite material into an antenna substrat...
Read MoreCurrently, the photovoltaic industry is accelerating its iteration towards efficient N-type battery technology, and heterojunction (HJT) cells have become a highly promising development direction due to their outstanding advantages such as high conversion efficiency, low temperature coefficient, and high bilayer ratio. However, due to the double-sided power generation structure used by HJT, low-temperature silver paste needs to be coated on both sides of the battery, resulting in much higher silver powder consumption than single-sided PERC cells. The high cost of silver powder has become a key bottleneck restricting its large-scale commercialization and further cost reduction. Driven by the core goal of continuously promoting "cost reduction and efficiency improvement" in the photovoltaic industry, it is urgent to find a "replacement" for silver powder. Compared to silver powder, copper powder demonstrates a huge cost advantage at its extremely low price. However, the biggest inherent disadvantage of copper powder is its high susceptibility to oxidation. In electrode preparation and usage environments, its conductivity deteriorates sharply due to oxidation, making it difficult to meet the long-term reliable operation requirements of photovoltaic cells. Therefore, the silver coated copper powder technology, which combines cost advantages and potential performance guarantees, has emerged as an important exploration direction in the cost reduction path of double-sided structured batteries such as HJT. Silver coated copper powder is formed by uniformly and continuously coating a layer of silver shell ranging from tens to hundreds of nanometers on the surface of copper powder, forming a typical "core-shell structure". This special structure allows the copper core to occupy the majority of the powder mass, significantly reducing the consumption of expensive silver metal. On the other hand, it endows silver copper powder with excellent properties similar to pure silver powder: 1. Antioxidant activity The dense and chemically inert silver layer on the surface of silver coated copper powder acts as a physical barrier, effectively isolating the internal copper core from the external environment (oxygen, moisture), thereby significantly delaying the oxidation process of the copper core. 2. Conductivity: As a conductive filler in electrodes, silver coated copper powder can conduct current through an externally wrapped silver layer. In theory, a well coated silver shell ensures effective conduction of current on the electrode surface, providing high conductivity close to the surface of silver powder. With the acceleration of technological iteration, especially in collaboration with emerging low-temperature battery processes such as HJT, the industrial application potential of silver coated copper powder is gradually emerging. However, the introduction of copper element has raised concerns about its long-term reliability. How to ensure that copper does not oxi...
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