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180
resultados
Última actualización
19/07/2025 [07:27:00]
Resultados 125 a 150 de 180
Resumen de: CN120221632A
本发明公开了一种硅碳负极材料、制备方法及其应用，包括硅核；包裹所述硅核的碳壳；多个定向排列的石墨烯片，所述石墨烯片一端与硅核接触，另一端延伸至与碳壳接触，且相邻石墨烯片之间形成空隙。该结构通过石墨烯片的定向排列和碳壳的致密包覆协同作用，显著降低界面接触电阻并缓解硅核体积膨胀应力，提升材料的导电性、机械稳定性和振实密度。
Resumen de: CN120210859A
本发明涉及一种B,N共掺杂碳纳米管负载铜铁双金属氧化物催化剂及其制备与应用，本发明通过煅烧法制备得到了B,N共掺杂的碳纳米管，并通过浸泡吸附法使金属离子吸附于碳材料表面，然后置于管式炉中，在氩气氛围中进行高温热解，可以通过对金属离子浓度、比例、温度的调控实现对碳材料表面金属活性位点的大小密度调控，构建双金属氧化物团簇结构。本发明获得的碳纳米管材料既保留了碳材料自身的完整结构，又在表面构造负载了大量的铜铁双金属氧化物团簇，制备得到有效促进电催化硝酸盐还原产氨材料，能够有效增加硝酸盐还原性能，收率有明显提升，在‑0.8VRHE的电位下可以达到95.2 mgh‑1mgcat‑1的产氨速率和91.3%的法拉第效率。
Resumen de: CN120208212A
本发明涉及医用纳米材料技术领域，具体公开了一种三七多糖碳量子点化聚合物及其制备方法和应用。三七多糖碳量子点化聚合物的制备方法包括S1、从三七提取总皂苷后的药渣中提取三七多糖；S2、将三七多糖按照比例1g:（10~40）mL分散于水中，于200~300℃进行水热反应1~3h后，冷却至室温；S3、超声处理，离心取上清液，过滤并透析纯化，透析使用截留分子量为500~800D的透析袋；S4、将透析后的溶液冷冻干燥，得到三七多糖碳量子点化聚合物。采用本发明提供的三七多糖碳量子点化聚合物制备医用敷料，呈海绵状，止血效果显著，小鼠肝脏损伤模型结果显示止血时间仅需约56s。
Resumen de: CN120208282A
本发明涉及一种氧化锌/石墨烯量子点气凝胶及其制备方法及NO2气敏传感器。该氧化锌/石墨烯量子点气凝胶的制备方法为将海藻酸钠、氧化锌、石墨烯量子点溶液混合后得到悬浮液，冷冻干燥即得。本发明充分发挥了石墨烯量子点(GQDs)的高比表面积、良好的导电性以及化学稳定性等独特的物理化学性质，改善了以纯ZnO为主体构建的气敏传感器的工作温度高、灵敏度低、响应慢等问题。
Resumen de: CN120209186A
本申请公开了一种石墨烯分散剂及其制备方法和应用，本申请中所述的石墨烯分散剂具有如式I所示的化学结构：#imgabs0#其中，n、m分别为重复单元，n＝1220～1660，m＝20～240。该石墨烯分散剂具有特定的结构，不仅能够高效剥离石墨制备石墨烯，同时能够使得石墨烯在水中稳定分散，避免石墨烯重新堆积和团聚，制备得到横向尺寸小且少层的石墨烯，同时提高制备的石墨烯的质量和产率，对于工业规模化生产高质量小尺寸石墨烯具有重要的意义。
Resumen de: WO2025132634A1
The invention relates to a method for the in situ electrical characterisation of a grown carbon nanotube connecting two neighbouring cantilevers within a cantilever chip (2) and forming a low-temperature quantum dot, comprising the steps of 1) applying a voltage between two electrically conductive areas provided respectively on the two cantilevers close to the respective ends of the nanotube, the end conductive areas of the cantilevers acting respectively as drain and source of a field-effect transistor, 2) applying a gate potential to the field-effect transistor, between a gate (220) placed close to the carbon nanotube and the end conductive area acting as source, 3) measuring the current flowing between the end conductive areas of the cantilevers, and 4) processing the current measurements and the applied gate potential.
Resumen de: WO2025136153A1
The invention relates to the chemical industry, and more particularly to technology for producing hydrogen and carbon nanofibres by the catalytic pyrolysis of light hydrocarbons, and can be used in various fields of activity (for example, the chemical industry, hydrogen energy production, and other industrial sectors). The technical result is an increase in the yield of hydrogen and of carbon nanomaterial in the form of carbon nanofibres. This technical result is achieved by the present solution to the problem of implementing a continuous process for producing hydrogen and carbon nanofibres in a device having a vertical reactor with a fluidized catalyst bed, where the continuous operation of the device is provided by a system for continuously supplying a catalyst and a system for discharging carbon nanofibres.
Resumen de: WO2025135335A1
The present invention relates to a novel nanocomposite comprising reduced graphene oxide and LFO nanoparticles, and a metronidazole detection use thereof. The LFO/rGO nanocomposite of the present invention was prepared using a simple and eco-friendly method, and it has been identified that, compared to a conventional MTZ sensor, an electrode on which the nanocomposite prepared in this way is deposited can detect and quantify MTZ with a wider linear range, a lower detection limit and superior sensitivity, and thus the present invention can be used for detecting MTZ remaining in a biosample or a food sample.
Resumen de: WO2025129779A1
Disclosed are a nano silicon-carbon composite material, a preparation method therefor, and a use thereof. The nano silicon-carbon composite material comprises co-agglomerated nano silicon particles and nano carbon particles. The mass ratio of the nano silicon particles to the nano carbon particles is (45-60):(40-55). The nano silicon particles have an average particle size of 1-50 nm and a crystallite grain size of 1-10 nm. The nano silicon particles have varied crystal orientations and are freely combined with the nano carbon particles. In the nano silicon-carbon composite material, the nano silicon particles and the nano carbon particles are uniformly dispersed, and the particle size of the nano silicon particles is small. Moreover, due to the dispersion of the nano carbon, the phenomenon of agglomeration between the nano silicon particles can be reduced. When the composite material is applied to negative electrode materials and batteries, the phenomenon of electrochemical sintering can be effectively mitigated.
Resumen de: WO2025129503A1
The present disclosure relates to the technical field of lithium-ion battery positive electrode materials. Disclosed are a preparation method for nano lithium iron phosphate and an application thereof. The method comprises: dispersing iron phosphate in an alcohol solvent, and performing ultrasonic treatment to obtain a suspension A; performing laser treatment on the suspension A, stirring the suspension A during the laser treatment, adding a lithium source and a carbon source into the suspension A having undergone laser treatment, and mixing same to obtain a suspension B; and performing spray drying on the suspension B to obtain dried powder, and sintering the dried powder in an inert atmosphere to obtain nano lithium iron phosphate.
Resumen de: WO2025136733A1
The present disclosure is directed to systems and methods of producing disproportionated silicon oxide composite particles. The disproportionated silicon monooxide composite particles can be produced by mixing an alkali metal salt and/or an alkaline earth metal salt, a carbon precursor, a liquid medium, and silicon monooxide particles to form a precursor suspension. The precursor suspension can be heated to form a powder that includes disproportionated silicon monooxide particles having a coating comprising alkali metal and/or alkaline earth metal, wherein the disproportionation of the silicon monoxide is at least 30%.
Resumen de: KR20250095483A
본 발명은 탄소나노튜브, 상기 탄소나노튜브의 표면을 감싸는 제1 분산제, 상기 탄소나노튜브의 표면에 전하를 도입하는 제2 분산제, 및 상기 전하와 정전기적 반발력을 갖는 저장 안정제를 포함하는 탄소나노튜브 분산액, 이의 제조 방법, 이를 포함하는 전극 슬러리 조성물 및 이차 전지를 제공한다.
Resumen de: WO2025135335A1
The present invention relates to a novel nanocomposite comprising reduced graphene oxide and LFO nanoparticles, and a metronidazole detection use thereof. The LFO/rGO nanocomposite of the present invention was prepared using a simple and eco-friendly method, and it has been identified that, compared to a conventional MTZ sensor, an electrode on which the nanocomposite prepared in this way is deposited can detect and quantify MTZ with a wider linear range, a lower detection limit and superior sensitivity, and thus the present invention can be used for detecting MTZ remaining in a biosample or a food sample.
Resumen de: KR20250095498A
본 발명은 탄소나노튜브, 중량평균분자량이 4,000 g/mol 내지 30,000 g/mol인 비이온성 고분자를 포함하는 제1 분산제, 및 술폰산(염)기를 가지는 음이온성 고분자를 포함하는 제2 분산제를 포함하며, 상기 제1 분산제 및 상기 제2 분산제의 중량비는 5:1 내지 1:5 인 탄소나노튜브 분산액, 이의 제조 방법, 이를 포함하는 전극 슬러리 조성물 및 이차 전지를 제공한다.
Resumen de: US2025206616A1
A carbon nanotube dispersion liquid includes carbon nanotubes with an average fiber length of 10 μm or more, an aqueous solvent, and a dispersant that is soluble in the aqueous solvent and has a weight-average molecular weight of 600000 or more. A content of the dispersant is 10 parts by mass or more and 500 parts by mass or less relative to 100 parts by mass of the carbon nanotubes.
Resumen de: US2025206615A1
A nonaqueous carbon nanotube dispersion liquid includes carbon nanotubes with an average fiber length of 100 μm or more, a nonaqueous solvent, and a dispersant that is soluble in the nonaqueous solvent and has a weight-average molecular weight of 70000 or more. A content of the dispersant is 10 parts by mass or more and 500 parts by mass or less relative to 100 parts by mass of the carbon nanotubes.
Resumen de: WO2025133287A1
A method of producing carbon materials from one or more carbon- containing feedstock gases by melting one or more electrolytes inside a reactor chamber, adding from 0.03 wt% to 2 wt% catalyst of the total electrolyte mass at a dosage rate from 16.7 ppm hour-1 to 1100 ppm hour-1, providing one or more feedstock gases into the molten electrolyte in the reactor chamber with a flow rate comprising at least 4.2 standard cm3 min-1 A-1 mass equivalent of CO2, and applying a direct current density in the range from 100 A m-2 up to 20 000 A m-2 to one or more anodes and one or more cathodes.
Resumen de: EP4574760A1
The present invention provides a carbon nanotube dispersion including carbon nanotubes; a first dispersant including a nonionic polymer having a weight average molecular weight of 4,000 g/mol to 30,000 g/mol; and a second dispersant including an anionic polymer having a sulfonic acid (salt) group, wherein a weight ratio of the first dispersant to the second dispersant is 5:1 to 1:5; a method of preparing the carbon nanotube dispersion; and an electrode slurry composition and secondary battery including the carbon nanotube dispersion.
Resumen de: EP4574757A1
A nonaqueous carbon nanotube dispersion liquid includes carbon nanotubes (10) with an average fiber length of 100 µm or more, a nonaqueous solvent, and a dispersant (20) that is soluble in the nonaqueous solvent and has a weight-average molecular weight of 70000 or more. A content of the dispersant (20) is 10 parts by mass or more and 500 parts by mass or less relative to 100 parts by mass of the carbon nanotubes (10).
Resumen de: EP4574759A1
A carbon nanotube dispersion liquid includes carbon nanotubes (10) with an average fiber length of 10 µm or more, an aqueous solvent, and a dispersant (20) that is soluble in the aqueous solvent and has a weight-average molecular weight of 600000 or more. A content of the dispersant (20) is 10 parts by mass or more and 500 parts by mass or less relative to 100 parts by mass of the carbon nanotubes (10).
Resumen de: EP4574758A1
The present invention provides a carbon nanotube dispersion, a method of preparing the same, an electrode slurry composition and secondary battery including the carbon nanotube dispersion, wherein the carbon nanotube dispersion includes carbon nanotubes, the first dispersant surrounding the surface of the carbon nanotubes, the second dispersant for introducing charges to the surface of the carbon nanotubes, and a storage stabilizer having electrostatic repulsion against the charges.
Resumen de: EP4574756A1
The process for the preparation of screen-printed carbon electrodes modified with oxidized single-walled carbon nanotubes (SWNTs) and decorated with graphene quantum dots for applications in the field of electrochemical sensor involves: i) interaction of SWNTs with a solution of HNO<sub>3</sub> and HCl in order to functionalize the single-walled carbon nanotubes with carboxyl groups (SWNT-COOH); ii) annealing treatment in air at 100 °C of SWNT-COOH to obtain graphene quantum dots containing carboxyl functional groups (GQD-COOH); iii) interaction of GQD-COOH with cysteamine when GQD containing thiol groups are obtained (GQD-SH) (iv) the interaction of SWNTs with aqueous solution of KMnO<sub>4</sub> and H<sub>2</sub>SO<sub>4</sub>, when "oxidized SWNTs" containing SWNTs having epoxy groups (labelled as SWNTO), hydroxyl groups (labelled as SWNT-OH) and carboxyl groups (labelled as SWNT-COOH) are obtained; and v) the deposition by the drop casting method on the surface of the screen-printed carbon electrode (SPCE) of oxidized SWNTs which are interacted with 1-ethyl-3-(3-dimethyl)aminopropyl carbodiimide (EDC) and successively with GQD-SH in order to decorate the "oxidized SWNTs" with GQD-SH.
Resumen de: EP4574755A1
A method of producing carbon materials from one or more carbon-containing feedstock gases by melting one or more electrolytes inside a reactor chamber, adding from 0.03 wt% to 0.5 wt% catalyst of the total electrolyte mass at a dosage rate from 16.7 ppm hour<sup>-1</sup> to 277.8 ppm hour<sup>-1</sup>, providing one or more feedstock gases into the molten electrolyte in the reactor chamber with a flow rate comprising at least 4.2 standard cm<sup>3</sup> min<sup>-1</sup> A<sup>-1</sup> mass equivalent of CO<sub>2</sub>, and applying a direct current density in the range from 100 A m<sup>-2</sup> up to 20 000 A m<sup>-2</sup> to one or more anodes and one or more cathodes.
Resumen de: CN120199818A
本申请提供了一种复合碳材料、硅碳复合材料、电化学装置和电子装置，复合碳材料包括金属颗粒和多孔碳基体，金属颗粒的颗粒尺寸为1nm至8nm；基于复合碳材料的质量，金属颗粒的质量百分含量为0.1％至10％。本申请的电化学装置具有良好的循环性能、倍率性能和安全性能。
Nº publicación: CN120193245A 24/06/2025
Solicitante:
北京科技大学
Resumen de: CN120193245A
本发明提供一种大厚度、大密度、高纯度垂直碳纳米管阵列热界面材料的制备方法，涉及垂直碳纳米管阵列热界面材料技术领域，包括以下步骤：以C2H4为碳前驱体，He为惰性保护气，Ar/H2为还原气体，Al2O3为过渡层，Fe为催化剂层进行配料；利用电子束蒸镀法，将Al2O3和Fe在Si基底上进行沉积，得到基底材料；将制备的基底材料清洗后烘干；将清洗后的基底放置于管式炉的石英舟内，在He气保护作用下，将炉温升至550‑600℃，同时阶梯式通入Ar/H2，继续升温至750‑800℃，通入C2H4进行垂直碳纳米管阵列的生长，得到所述大厚度、大密度、高纯度垂直碳纳米管阵列。本发明避免了低浓度催化剂带来的低矮型垂直碳纳米管阵列和无定形碳结构，因此能制备大厚度高纯度的垂直碳纳米管阵列薄膜材料。
BOPI
Sede Electrónica
