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1514 results about "Nonmetal" patented technology

In chemistry, a nonmetal (or non-metal) is a chemical element that mostly lacks the characteristics of a metal. Physically, a nonmetal tends to have a relatively low melting point, boiling point, and density. A nonmetal is typically brittle when solid and usually has poor thermal conductivity and electrical conductivity. Chemically, nonmetals tend to have relatively high ionization energy, electron affinity, and electronegativity. They gain or share electrons when they react with other elements and chemical compounds. Seventeen elements are generally classified as nonmetals: most are gases (hydrogen, helium, nitrogen, oxygen, fluorine, neon, chlorine, argon, krypton, xenon and radon); one is a liquid (bromine); and a few are solids (carbon, phosphorus, sulfur, selenium, and iodine). Metalloids such as boron, silicon, and germanium are sometimes counted as nonmetals.

Doped multi-layer core-shell silicon-based composite material for lithium ion battery and preparation method thereof

ActiveCN109599551AInhibits and buffers swellingPrevent partial failureMaterial nanotechnologySecondary cellsCarbon filmComposite film
The present invention relates to a doped multi-layer core-shell silicon-based composite material for a lithium ion battery, and a preparation method thereof. Other than being doped with a necessary lithium element, the material is also doped with at least a non-metallic element and a metal element; the material has a structure in which a silicon oxide particle doped with elements is taken as a core, and a multilayer composite film which is tightly coated on the surface of the core particle is taken as a shell; the core particle contains uniformly dispersed monoplasmatic silicon nanoparticles,the content of doping elements gradually decreases from the outside to the inside without a clear interface, and a dense lithium silicate compound is formed on the surface of the core particle by embedding and doping the lithium element; and the multilayer composite film is a carbon film layer and a doped composite film layer composed of the carbon film layer and other elemental components. The doped multi-layer core-shell silicon-based composite material provided by the present invention has a high capacity, good rate performance, high coulombic efficiency, good cycle performance, a low expansion rate, and other electrochemical characteristics when the material is used for the negative electrode of lithium ion battery.
Owner:BERZELIUS (NANJING) CO LTD +1

Ternary and multi-nary iron-based bulk glassy alloys and nanocrystalline alloys

InactiveUS20050263216A1High glass forming abilityIncreased electrical resistivityMagnetic materialsAmorphous phaseAtomic radius
Disclosed in this invention is a family of ternary and multi-nary iron-based new compositions of bulk metallic glasses which possess promising soft magnetic properties, and the composition selection rules that lead to the design of such new compositions. The embodiment alloys are represented by the formula MaXbZc, where M represents at least one of ferromagnetic elements such as iron and may partly be replaced by some other substitute elements; X is an element or combinations of elements selected from those with atomic radius at least 130% that of iron and in the mean time is able to form an M-rich eutectic; and Z is an element or combinations of elements selected from semi-metallic or non-metallic elements with atomic radius smaller than 86% that of iron and in the meantime is able to form an M-Z eutectic; a, b, c are the atomic percentage of M, X, Z, respectively, and a+b+c=100%. When 1%<b<15% and 10%<c<39%, the alloys show a bulk glass forming ability to cast amorphous ribbons/sheets at least 0.1 mm in thickness. When 3%<b<10% and 18%<c<30%, the alloys show a bulk glass forming ability to cast amorphous rods at least 1 mm in diameter. The amorphous phase of these as-cast sheets/rods is at least 95% by volume. This invention also discloses the existence of nano-crystalline phase outside of the outer regime of the bulk glass forming region mentioned above.
Owner:NATIONAL TSING HUA UNIVERSITY

Rapid detection method and rapid detection device of non-metallic inclusions in metal

ActiveCN103123329AQuickly obtain 3D topographyQuick access to ingredientsUsing optical meansMaterial analysis by measuring secondary emissionImaging analysisNon-metallic inclusions
The invention discloses a rapid detection method of non-metallic inclusions in metal. The rapid detection method comprises the following five steps of: heating and smelting a metal test sample, separating the inclusions, detecting the total amounts and the sizes of the inclusions, condensing metal liquid, and detecting the three-dimensional shape and components of the inclusions. The invention further provides a special rapid detection device comprising a heating furnace device, a metal liquid rotation device, a video collection device and an image analysis system. The metal test sample is rapidly smelted and the steel liquid is driven to rotate; centrifugal force and gravity are used for rapidly upwards floating various non-metallic inclusions in the metal liquid and gathering the various non-metallic inclusions at the center of the surface of the metal liquid; high speed photography and video analysis software is used for rapidly obtaining the total amount and the size distribution of the non-metallic inclusions in the metal test sample; the metal liquid is rapidly cooled and condensed and the inclusions are cured on the surface of the metal test sample; and a scanning electron microscope and the energy spectrum analysis are used for obtaining the three-dimensional shapes and the components of the non-metallic inclusions in the metal test sample. According to the rapid detection method and the device disclosed by the invention, the direction is rapid and convenient, the analysis is accurate and visual, and cleaning and no pollution can be realized.
Owner:新兴发展集团有限公司

Nonstick cookware and manufacturing method thereof

The invention discloses nonstick cookware and a manufacturing method thereof, wherein the inner surface of the pot body of the nonstick cookware is provided with an uneven raised structure; a grain structure is distributed on the raised structure; and a nonstick coating covers outside the raised structure and the grain structure. The manufacturing method of the cookware comprises the following steps of: (1) forming the pot body of the cookware; (2) carrying out inner surface treatment on the pot body of the cookware to ensure that the uneven raised structure is formed at the inner surface of the pot body of the cookware; (3) carrying out meltallizing treatment on the cookware blank after being subjected to the roughening treatment to ensure that nanoscale hard metal-based or nonmetal-based grain structure is distributed on the raised structure of the pot body of the cookware; (4) spraying nonstick coatings on the inner surface of the pot body of the cookware after being subjected to the meltallizing treatment to ensure that the nonstick coating covers outside the raised structure and the grain structure; and (5) putting in a sintering channel at a temperature of 350-440 DEG C after the spraying to sinter for 5-20 minutes so as to obtain a finished product. The nonstick cookware disclosed by the invention is good in nonstick effect and abrasive resistance, simple in manufacturing process and suitable for large scale production.
Owner:谛卓(北京)咨询顾问有限公司

High-nickel ternary positive electrode material and preparation method thereof

The invention discloses a high-nickel ternary positive electrode material and a preparation method thereof. The high-nickel ternary positive electrode material is formed by a matrix and a coating layer, wherein the matrix is prepared from a high-nickel ternary precursor, a lithium source and a doping agent, the doping agent is a compound containing M', M' is a doping element, M' is one or more selected from a metal element and/or a non-metal element, the coating layer is formed by a coating material, and the coating material is a metal or non-metal compound. The preparation method comprises the following steps of: mixing a high-nickel ternary precursor, a lithium source and a doping agent, carrying out primary sintering and post-treatment to obtain a doped high-nickel ternary positive electrode material matrix, mixing the doped high-nickel ternary positive electrode material matrix with a coating material, and carrying out secondary sintering and post-treatment to obtain the high-nickel ternary positive electrode material. The high-nickel ternary positive electrode material is subjected to multi-element doping and surface coating co-modification, crystal lattices are stable, and alithium ion battery prepared from the high-nickel ternary positive electrode material has excellent rate capability, cycling stability and safety performance.
Owner:TIANJIN GUOAN MGL NEW MATERIALS TECH CO LTD

Smart wearable mine detector

To improve the problems of conventional mine detectors, the purpose of the present invention is to provide a smart wearable mine detector comprising a human body antenna unit 100, a main microprocessor unit 200, a smart eyeglasses unit 300, a body-mounted LCD monitor unit 400, a wireless data transmission and reception unit 500, a belt-type power supply unit 600, a black box-type camera unit 700, and a security communication headset 800, the smart wearable mine detector: can be detachably worn on the head, torso, arm, waist, leg and the like of a body while a combat uniform is worn, thereby having excellent compatibility with conventional combat uniforms; enables a human body antenna unit which is detachably attached to a body and detects a mine through a super high-frequency RF beam and a neutron technique to be applied so as to detect the mine by identifying metals, nonmetals, and initial explosives of the mine; enables mines buried on the ground and under the ground to be detected in all directions (360°), and a distance, location, form, and materials of the mines to be exhibited on smart eyeglasses and a body-mounted LCD monitor unit in real time as 2D or 3D images such that a combatant can engage in battle avoiding mines, thereby improving combat efficiency by 90% when compared to existing combat efficiency; enables a battle to be carried out for three to seven days through a twin self-power supply system of a portable battery and a belt-type power supply unit even without need for charging power; and enables combat situations in a remote place to be monitored, in real time, in a remote combat command server, and allows each combatant to share combat information one to one such that it is possible to construct a smart combat command system capable of remotely commanding real combat situations as if one was on site of the battle.
Owner:FOUND FOR RES & BUSINESS SEOUL NAT UNIV OF SCI & TECH
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