摘要:
A gas permeable, liquid impermeable membrane for use with gas sensors consists of a film forming polymer which incorporates nanoparticles selected to improve one or more of the following: permeability to gases, to selectively regulate permeability of selected gases through the membrane, to inhibit microbial growth on the membrane. A capsule shaped container consists of wall material biocompatible with a mammal GI tract and adapted to protect the electronic and sensor devices in the capsule, which contains gas composition sensors, pressure and temperature sensors, a microcontroller, a power source and a wireless transmission device. The microprocessor receives data signals from the sensors and converts the signals into gas composition and concentration data and temperature and pressure data for transmission to an external computing device. The capsule wall incorporates gas permeable nano-composite membranes with embedded catalytic and nano void producing nanoparticles, enhancing the operation, selectivity and sensitivity of the gas sensors.
摘要:
A positive electrode for an energy storage device includes a first activated carbon material comprising pores having a size of ≤ 1 nm, which provide a combined pore volume of > 0.3 cm 3 /g, pores having a size of > 1 nm to ≤ 2 nm, which provide a combined pore volume of ≥ 0.05 cm 3 /g, and 3 /g combined pore volume of any pores having a size of > 2 nm. A negative electrode for the energy storage device includes a second activated carbon material comprising pores having a size of ≤ 1 nm, which provide a combined pore volume of ≤ 0.3 cm 3 /g, pores having a size of > 1 nm to ≤ 2 nm, which provide a combined pore volume of ≥ 0.05 cm 3 /g, and 3 /g combined pore volume of any pores having a size of > 2 nm. The total oxygen content in at least the first activated carbon material is at most 1.5 wt.%.
摘要:
Preferred embodiments provide a method for fabricating pyrolysed carbon nanostructures, the method comprises at least following steps: Providing a substrate, and then Depositing a polymeric material comprising either compounds with different plasma etch rates or compounds that can mask a plasma etching process, and then Subjecting said polymeric material to a plasma etching process (e.g. oxygen plasma) to form polymeric nanostructures and then Pyrolysing said polymeric nanostructures to form carbon nanostructures.
摘要:
Provided are a coating film, a manufacturing method for the same, and a PVD device that not only sufficiently improve the balance of low-friction properties and wear resistance, but also improve chipping resistance (defect resistance) and peeling resistance. This coating film coats a substrate surface, wherein a hard carbon layer is formed extending in columns-shape perpendicular to the substrate when observed in a cross-sectional bright-field TEM image, the hard carbon layer is formed using a PVD method, and the ID/IG ratio is 1-6 when the hard carbon layer is measured using Raman spectroscopy, said ratio being the ratio of the Raman spectrum D band peak area intensity and G band peak area intensity. The coating film manufacturing method and the device use an arc PVD method, and while controlling the bias voltage, arc current, and heater temperature to maintain a substrate temperature of 250-400°C, also coat the substrate surface with the hard carbon film by rotating and/or revolving the substrate.
摘要:
Multi-layered graphene materials and methods of making and use are described herein. A multi-layered graphene material can include a plurality of graphene layers having a plurality of intercalated nano- or microstructures that form a plurality of yolk/shell type structures. Each yolk/shell type structure can include at least two graphene layers that form a shell-like structure that encompasses a void space having at least one of the plurality of nano- or microstructures. The void space has a volume sufficient to allow for volume expansion of the at least one of the plurality of nano- or microstructures without deforming the shell-like structure.
摘要:
The present invention relates to a process for producing carbon nanostructures by decomposition of hydrocarbon gases in the reaction chamber in the presence of a catalyst and at a temperature of 600 to 1200° C and an apparatus for implementing said process.
摘要:
The invention relates to a method for carbonizing carbon dioxide, comprising the step of contacting carbon dioxide with a solution of chelating agent or a solution of substance which exhibits chelating properties under dynamic conditions to generate oxygen and carbon particles. The method of the invention is significantly more economical and convenient and do not cause harm to the environments. The invention also exhibits a novel and unique feature that elemental carbon and oxygen are generated as final products under normal room temperature and atmosphere, and the carbon can be recovered as an energy source.
摘要:
Disclosed are a method for preparing carbon powder from an organic polymer material and a method for detecting the crystal morphology in an organic polymer material. The method for preparing a carbon material comprises a carbonization step in which a straight-chain polymer material containing nanocrystals is carbonized with a strong oxidant free of heavy metal ions, thus obtaining a carbon nanomaterial. Also disclosed is a method for treating an organic polymer material with an acid to obtain a material with a carbonized surface or a powder material containing graphene.
摘要:
The technical result of the present method is simplicity, low cost and the possibility of producing nanoparticles of different types. This result is achieved in that the method for producing a colloidal solution of nanoscale carbon is carried out as follows: an organic fluid is fed into a chamber that contains electrodes, an inert gas is injected into the inter-electrode space, a high temperature plasma channel is formed in gas bubbles, thus atomizing carbon atoms, followed by rapid cooling.