91results about How to "High mechanical flexibility" patented technology

The invention relates to a flexible symmetrical pseudocapacitance super capacitor and a preparation method thereof. The flexible symmetrical pseudocapacitance super capacitor comprises a positive electrode, a negative electrode and electrolyte, wherein the electrolyte is arranged between the positive electrode and the negative electrode; the flexible symmetrical pseudocapacitance super capacitor is characterized in that with a nano nickel particle/multiwalled carbon nanotube/conductive carbon cloth electrode employing conductive carbon cloth as a current collector and a nano nickel particle/multiwalled carbon nanotube as an active material as the positive electrode and the negative electrode, the flexible symmetrical pseudocapacitance super capacitor is formed by growing the nano nickel particle on a multiwalled carbon nanotube/conductive carbon cloth base; and the nano nickel particle and the multiwalled carbon nanotube are combined in situ. The nano nickel particle/multiwalled carbon nanotube/conductive carbon cloth electrode has the advantages of high global electronic mobility and excellent rate capability; the pseudocapacitance super capacitor assembled by the nano nickel particle/multiwalled carbon nanotube/conductive carbon cloth electrode has a symmetrical structure, and is capable of charging and discharging in positive and negative directions without distinguishing of the polarity; compared with a traditional carbon-based super capacitor, relatively high specific capacity of pseudocapacitance can be provided; and the flexible symmetrical pseudocapacitance super capacitor has excellent mechanical flexibility.

Single-walled carbon nanotubes (SWNTs) are decorated with metal nanoparticles to form high-performance flexible hydrogen sensors. The special process to form the high-performance flexible hydrogen sensors can combine a dry transfer printing technique and modification of SWNTs with palladium (Pd) nanoparticles to provide high-performance hydrogen sensors with excellent mechanical flexibility on plastic substrates. Two approaches can be used to decorate the SWNTs. One is physical deposition, such as electron beam evaporation (EBE) and the other is electrochemical deposition which can selectively grow palladium nanoparticles on the surface of the SWNTs, resulting in significantly decreasing the use of palladium. Preferably, the Pd nanoparticles are deposed on the SWNTs in a discontinuous arrangement so that the Pd nanoparticles are spaced away from each other to form individual discontinuous Pd nanoparticles rather a continuous Pd film. Advantageously, the SWNTs are arranged with substantial semiconducting pathways. Desirably, the high-performance flexible hydrogen sensors have an excellent response and recovery time, provide superior sensitivity for detecting hydrogen, and are bendable to conform to the contours of other structures.

A photosensitive composition having low absorption loss at 1,300-1,610 nm and is suitable for practical waveguide devices. The composition comprises at least one (meth)acrylate prepared from a fluorinated monomer or polymer having minimum two hydroxyl groups, at least one multifunctional non-fluorinated (meth)acrylate and at least one photoinitiator. An optical coating on a variety of substrates is obtained by exposing the photosensitive composition to actinic radiation such as UV light. An optical waveguide device is fabricated by patterning the photosensitive composition on a substrate.

The invention discloses a nano particle/carbon fiber cloth composite electrode material and a preparation method thereof, comprises loading a transition metal salt in a micron-sized phenolic aldehyde-based activated carbon fiber treated with pre-nitric acid by an impregnation method, The mesoporous carbon fibers embedded with transition metal oxide/sulfide/nitride/phosphide nanoparticles can alsobe prepared by high temperature oxidation/sulfidation/nitridation/phosphatization. The nano-particle/carbon fiber cloth composite electrode material prepared by the invention has excellent electrochemical performance and can be applied in the fields of energy storage and conversion such as supercapacitor, lithium/sodium ion battery and electrocatalysis.

A photosensitive composition suitable for practical waveguide devices is provided. The photosensitive composition comprises at least one multifunctional acrylate prepared from a fluorinated multifunctional alcohol and at least one photoinitiator. The said composition has high photo contrast, high curing speed, controllable refractive index, low curing shrinkage, high thermo-optic coefficient, low volatility and high viscosity. A waveguide device is formed by patterning the photosensitive composition.

The invention provides a preparation method of a flexible conductive ceramic fiber membrane. The method is characterized by comprising steps as follows: step 1: a TiO2 precursor solution is prepared,wherein the precursor solution contains a titanium source, a high-molecular polymer and a solvent; step 2: the TiO2 precursor solution is electrospun, and a precursor nanofiber membrane is obtained; step 3: the precursor nanofiber membrane is calcined in the air atmosphere, and a flexible TiO2 ceramic fiber membrane is obtained; step 4: the obtained flexible TiO2 ceramic fiber membrane is contacted with a metal lithium sheet in the vacuum atmosphere, the solvent is dropwise added to the surface of the fiber membrane, and the flexible conductive ceramic fiber membrane is obtained.

The present invention relates to a method for manufacturing an aerogel blanket, and a low-dust high-insulation aerogel blanket manufactured by the present invention, the method: increasing the adhesive performance of silica aerogel by activating the surface of a substrate for a blanket and increasing the roughness and porosity of the surface of the substrate for a blanket since the etching of thesurface of the substrate for a blanket is induced by using an acidic solution; and simultaneously increasing mechanical flexibility and inhibiting the generation of dust by further carrying out a gelmodification step in which cracks are introduced to the aerogel.

The invention relates to a flexible and stretchable temperature sensor with a knitted structure, which includes a base body, the base body is a knitted fabric, and temperature-sensitive fibers are integrated into the base body through knitting technology. The invention can comfortably and closely fit the surface of a human body or a biological body, and realizes the purpose of long-term and real-time monitoring of the temperature of a human body.

The invention discloses a preparation method of a flexible thin-film electrode. The method takes thermally-treated graphene oxide as conductive support and mechanical support and obtains the flexible thin-film electrode at one step through a vacuum filtration process. The method comprises the following steps: thermally treating graphene oxide aqueous solution to obtain thermally-treated graphene oxide aqueous solution; dispersing electrode active materials in water to form an electrode active material dispersion solution; mixing the thermally-treated graphene oxide aqueous solution with the electrode active material dispersion solution to obtain a mixed solution, filtering and drying, then obtaining the flexible thin-film electrode hybridized by the thermally-treated graphene oxide and the electrode active materials. The method is simple to operate and low in cost. The flexible thin-film electrode prepared by the method and hybridized by the thermally-treated graphene oxide and the electrode active materials has uniform layer structures, is excellent in conductivity and good in flexibility and can be widely used in the fields of batteries, super capacitance materials and green and environmentally friendly vehicles.

The invention provides a solid-state electrolyte and a preparation method thereof. The solid-state electrolyte comprises guar gum and an electrolyte mixed into the guar gum, wherein the electrolyte comprises zinc salts. The guar gum solid-state electrolyte used in the embodiment of the invention has high ionic conductivity, so that the specific capacity and the rate performance of a battery can befavorably improved. The solid-state electrolyte has good flexibility, so that the original capacity of the solid-state battery can be favorably maintained under the bending condition. The solid-stateelectrolyte can inhibit the growth of negative electrode zinc dendrite, so that the battery cycle performance is favorably improved. The used guar gum is a food additive, and is non-toxic and harmless on human bodies. The preparation method of the solid-state electrolyte is simple, and the raw materials are cheap, so that the manufacturing cost is favorably reduced. The invention also provides asolid-state zinc ion battery comprising the guar gum solid-state electrolyte, and good application and development prospects are realized in the aspects of portable foldable flexible electronics and energy source devices.

The invention relates to the technical field of gas sensor production, in particular to a production method of a NO2 photoelectric gas-sensitive sensor. The production method includes the steps of firstly, producing a ZnO seed layer; secondly, growing a ZnO nano wall; thirdly, aging to obtain the NO2 photoelectric gas-sensitive sensor. The produced NO2 photoelectric gas-sensitive sensor has the advantages that the sensor can detect the ppb level, and the gas sensitivity of the sensor to 5ppb NO2 is 7.482; the sensor is high in sensitivity, the photo-sensitivity of the sensor to light with the wavelength being 365nm under room temperature is 6.16, and the sensitivity of the sensor to 50ppm NO2 is 57.5; the sensor is good in stability and easy in material obtaining and has the coupling property of photo-sensitivity and gas sensitivity.

The invention is directed to a stranded conductor (2) including a specific number of a first type of wire (5) which, in cross-section of the stranded conductor, are arranged in a hexagonal pattern around a central wire in at least two layers. The wires arranged at the vertices of the hexagonal pattern are of a second type of wire having in principle a smaller diameter than the first type of wires. The interstitial spaces (10) between the first and the second wires are filled by a sealing agent (3).

The invention discloses an ionic plastic crystal-polymer-inorganic composite electrolyte membrane and a preparation method and application thereof. The ionic plastic crystal-polymer-inorganic composite electrolyte membrane comprises a porous organic-inorganic composite membrane and an ionic plastic crystal electrolyte composite material, the porous organic-inorganic composite membrane has a continuous three-dimensional network structure, the ionic plastic crystal electrolyte composite material is distributed on the surface of the three-dimensional network structure and/or in contained holes, and the ionic plastic crystal electrolyte composite material comprises an ionic plastic crystal compound and a lithium salt. The ionic plastic crystal-polymer-inorganic composite electrolyte membrane disclosed by the invention has the advantages of simple preparation process, excellent mechanical strength, high ionic conductivity, wide electrochemical stability window, lithium dendritic crystal inhibition, high temperature resistance, flame retardance and the like.

The invention discloses a flexible graphene-based polyimide composite material having a film structure, and a preparation method and application thereof. The method comprises using the graphene with asingle-layer carbon atom structure as a skeleton carrier; polymerizing a polyimide polymer in situ on the graphene skeleton by a solvothermal method; then introducing a graphene oxide which is similar in mass to the reacted graphene oxide for suction filtration film formation, and obtaining a film-shaped graphene-based polyimide composite film material by carbonization under a nitrogen atmosphere. The polyimide obtained by the method is evenly supported between the graphene sheets, and the addition of the sheet graphene oxide not only improves the electrical conductivity of the composite material, but also provides the composite material with good flexibility. The method has a simple process, mild conditions and low cost. The method provides good experimental data and theoretical supportfor the research and application of graphene/polyimide materials in the field of electrochemistry.

The invention discloses a porous aluminum foil for a lithium ion battery current collector and a preparation method and application of the porous aluminum foil, belongs to the technical field of preparation of the lithium ion battery current collector, and discloses a preparation method for quickly etching the porous aluminum foil on the lithium ion battery current collector by utilizing a microwave technology. The method comprises the following steps: dissolving metal salt in deionized water, paving a thin layer of commercial aluminum foil for microwave reaction, and accelerating the etchingspeed; and by increasing the microwave frequency, obtaining the porous aluminum foil with the honeycomb porous structure uniformly distributed. The preparation method has the advantages of short consumed time, low energy consumption, controllable reaction, simple operation and the like, and can be applied to lithium ion batteries and energy storage. The surface of the aluminum foil after microwavetreatment is more hydrophilic, coating of a cathode material is facilitated, and the aluminum foil can be effectively applied to lithium ion batteries.

The invention relates to a piece of glass with low resistance and low optical loss and a preparation method thereof. A multilayer thin film structure is prepared on inorganic glass, polycarbonate or organic glass by utilizing a coating technology and a magnetron sputtering technology and comprises a transition layer, a dielectric layer, a protective layer, a conductive layer, a protective layer, an anti-reflection layer and a wear-resistant layer, so that the multilayer thin film structure has low resistance and low optical loss performance. Compared with a current common indium tin oxide/silver/indium tin oxide sandwich structure, the multilayer thin film structure has the advantages of being low in cost, non-toxic, good in mechanical flexibility, good in chemical stability, good in filmadhesion, low in resistance, good in light transmission performance, suitable for high-temperature-resistant base materials and the like.

An improved system of monitoring vibration of a blasting model test for a jointed rock mass and a method are provided. The system includes: a loading subsystem for three-way load, a model-surface blasting-vibration acquisition subsystem, and a model-interior dynamic stress-strain acquisition subsystem. The system and the method are provided, and a blasting model for a transparent jointed rock mass and a monitoring method that are obtained can analyze the influence of a joint inclination angle on propagation and attenuation laws of blasting stress waves in the jointed rock mass, and can analyze the influence of different millisecond blasting modes on the stability of an existing tunnel in the jointed rock mass, and can capture a real-time dynamic evolution process of cracks. The stress and strain measurement technologies used can perform omnibearing monitoring and recording for large deformations of surrounding rock under blasting load, and can resist the electromagnetic interference.