Provided in the present disclosure are a nickel-plated carbon fiber film, a manufacturing method of the nickel-plated carbon fiber film, a shielding structure and a preparation method of the shielding structure. The nickel-plated carbon fiber film comprises: at least one carbon fiber base fabric, metal colloid particles adhering to a surface of the carbon fiber base fabric; at least one nickel metal layer, which is provided on a surface of the carbon fiber base fabric and a surface of the metal colloid particles that is far from the carbon fiber base fabric.

A carbon fiber composite, including a carbon fiber not connected to a substrate, an insulative layer coating at least a portion of the carbon fiber, and a material deposited on at least a portion of the insulative layer. The carbon fiber deposit may be used, for example, in adjustable Fresnel lenses and horn antennas.

Graphene has been used in nanocomposites as constituents/doping in plastics or epoxy providing dramatic enhancement of the mechanical properties but have not progressed past the laboratory level novelty. This invention can provide a graphene based composite structure with a density less that 1.9 g/cm.sup.3 for a fiber, yarn, rope or cable and a density less that 1.5 g/cm.sup.3 for a sheet both structure have tensile and shear strength greater than either Aluminum or Steel; thus providing a graphene material that is both much lighter and stronger.

One aspect of the present application relates to a method of synthesizing a thermoplastic polymer. This method includes providing a depolymerized lignin product comprising monomers and oligomers and producing lignin (meth)acrylate monomers and oligomers from the depolymerized lignin product. A thermoplastic lignin (meth)acrylate polymer is then formed by free radical polymerization of the lignin (meth)acrylate monomers and oligomers. The present application also relates to a branched chain thermoplastic lignin (meth)acrylate polymer which includes a chain transfer agent. The thermoplastic lignin based polymers of the present application can be used to prepare carbon fibers, and engineering thermoplastics. Mixtures of lignin (meth)acrylate monomers and oligomers are also disclosed.

The method for producing a unidirectional carbon fiber tape, the method comprising: passing a first portion of a strand of fiber through an oven to carbonize the first portion, thereby converting carbon fiber precursor fiber of the first portion to carbon fiber, wherein the first portion comprises carbon fiber precursor fiber; and impregnating the carbon fiber of the first portion with thermoplastic matrix material to form impregnated fiber, while a second portion of the strand of fiber that is upstream of the first portion is passing through the oven to convert carbon fiber precursor fiber of the second portion to additional carbon fiber.

The method for producing a unidirectional carbon fiber tape, the method comprising: passing a first portion of a strand of fiber through an oven to carbonize the first portion, thereby converting carbon fiber precursor fiber of the first portion to carbon fiber, wherein the first portion comprises carbon fiber precursor fiber; and impregnating the carbon fiber of the first portion with thermoplastic matrix material to form impregnated fiber, while a second portion of the strand of fiber that is upstream of the first portion is passing through the oven to convert carbon fiber precursor fiber of the second portion to additional carbon fiber.

Provided is an internal hybrid electrochemical cell comprising: (A) a pseudocapacitance cathode comprising a cathode active material that contains a conductive carbon material and a porphyrin compound, wherein the porphyrin compound is bonded to or supported by the carbon material to form a redox pair for pseudocapacitance, wherein the carbon material is selected from activated carbon, activated carbon black, expanded graphite flakes, exfoliated graphite worms, carbon nanotube, carbon nanofiber, carbon fiber, a combination thereof; (B) a battery-like anode comprising lithium metal, lithium metal alloy, or a prelithiated anode active material (e.g. prelithiated Si, SiO, Sn, SnO.sub.2, etc.), and (C) a lithium-containing electrolyte in physical contact with the anode and the cathode; wherein the cathode active material has a specific surface area no less than 100 m.sup.2/g which is in direct physical contact with the electrolyte.

A process for making a composite product comprises the steps of: A. Circumferentially plating a carbon fiber core with an alloy film including a film of high entropy alloy and liquid metal alloy or a film of metallic glass to form a film-clad carbon fiber thread; B. Weaving a plurality of said film-clad carbon fiber threads to form an interlaced film-clad carbon fiber sheet; and C. Vibrationally thermally pressing a plurality of said interlaced film-clad carbon fiber sheets as superimposed with one another to form a composite product.

The present disclosure relates to a carbonaceous structure and a method for preparing the same, an electrode material and a catalyst including the carbonaceous structure, and an energy storage device including the electrode material.

The present invention belongs to the technical field of material fabrication, and particularly relates to an ultra-sensitive glucose sensor based on a graphene and carbon fiber substrate and a fabrication method thereof. The method includes fabricating a carbon fiber cloth with vertical graphene growth on a surface thereof, performing pretreatment to make the carbon fiber cloth hydrophilic, directly soaking the carbon fiber cloth in a PBS solution of glucose oxidase with the pH of 7.4, and then taking out and drying the carbon fiber cloth at room temperature to obtain a glucose sensor. According to the present invention, the lower limit of glucose detection reaches about 0.1 mM, and the glucose sensor also has multistage corresponding characteristics, so that different detection coefficients and capabilities can be achieved in different glucose concentration ranges. The application range and precision of the glucose sensor are greatly improved.