40results about How to "Increased electrochemically active surface area" patented technology

The invention discloses a making method of platinum-on-carbon based catalyst in the fuel battery, which comprises the following steps: adding the metal salt pioneer body, complexing agent and alcohol reducer in the organic solvent; stirring at atmospheric temperature; adding alkaline material; adjusting the pH value; protecting heat reflux through nitrogen or in the autoclave; adding the carbon carrier to stir at atmospheric temperature; diffusing the metal sol particle evenly on the carbon carrier; adding acid material to adjust the pH value; adding second distilled water to break sol through ultrasonic shock; filtering the filter cake until the Cl- is not detected; drying the vacuum; cooling; grinding to produce the platinum-on-carbon based catalyst within Pt / C, Pt-Ru / C, Pt-Ru-Ir / C, Pt / CNT, Pt-Ru / CNT and Pt-Ru-Ir / CNT.

The invention discloses a preparation method of a Pt open hollow sphere structure catalyst. The method is characterized in that the Pt open hollow sphere structure catalyst is prepared through a one-step chemical reduction method; and the method specifically comprises the steps of adding 4.0mg of Pt (acac)2, 10-80mg of lauryl sodium sulfate (SDS) and polyvinylpyrrolidone (PVP) to a container containing 8mL of a choline chloride / ethylene glycol eutectic solvent (DES) separately; carrying out ultrasonic treatment at room temperature for 10min, magnetically stirring for 5min and then carrying outmixing reaction on the obtained suspension at 110-160 DEG C for 0.5-5h; and centrifuging and washing a reaction product to obtain the Pt open hollow sphere structure catalyst. The method has the advantages of being simple in operation process, few in steps and mild and controllable in conditions, can be successfully synthesized in one step and has a good application prospect; the Pt open hollow sphere structure catalyst prepared through the method has the characteristics of being large in aperture and high in electrochemically active surface area; and the utilization efficiency of a noble metal Pt and the electrocatalytic activity and stability of the noble metal Pt on methanol oxidation can be improved.

The invention discloses a preparation method of an electronic skin biofuel cell and a biofuel cell. The preparation method comprises: preparing an anode and a cathode substrate, on which a bottom electron conduction layer of a bioanode and a bottom electron conduction layer of a biocathode are prepared; The prepared anode material is printed on the anode site of the substrate, and the prepared cathode material is printed on the cathode site of the substrate, wherein, after the carbon nanotubes are activated, the mixture with naphthoquinone is ball milled in an argon atmosphere , and then mixed with acetic acid, glutaraldehyde, deionized water, chitosan and lactic acid oxidase to obtain a sol-like anode material; after activation of carbon nanotubes, ball milling in a nitrogen atmosphere, and then mixed with perfluororesin, deionized The ionic water is mixed and stirred to obtain a sol-like cathode material. The invention uses the bonding of graphene and carbon nanotubes to obtain a fast electron transport path, and then modifies the carbon nanotubes to obtain a flexible biofuel cell with high power density.

The invention discloses an electrolysis anode plate and a preparation method and application thereof. The preparation method comprises the steps of uniformly coating a substrate with an intermediate layer coating solution; and then, uniformly electroplating an intermediate layer of the substrate with an electroplating solution, and carrying out drying to obtain the electrolysis anode plate. The surface electrochemical activity surface area of a plating of the prepared electrolysis anode plate is larger, so that the electrolysis anode plate has more chemical reactivity sites during the utilization process, has extremely high electrochemical reactivity, facilitates decomposition of catalytic water, and is applied to the aspects of electrolysis dehydration, ectrolysed water and electrotransformation gas.

The invention discloses a method for preparing a stainless steel-based micro-nano array beta-PbO2 anode material, and belongs to the technical field of metal oxide lead dioxide anode materials. The method comprises the following steps that a stainless steel plate is used as a base body for electrodeposition of a beta-PbO2 layer, an AAO template is prepared on a stainless steel-based beta-PbO2 layer, the AAO template is characterized in that the hole diameter is monodisperse, the hole length-diameter ratio is high, hole ways are distributed uniformly, the hole density is high, hole amphoteric oxide is convenient to remove, the hole ways are parallel to one another and perpendicular to the surface of a base plate, holes are independent from one another, the holes are prevented from being intersected due to hole inclination, and the controllability of the hole diameter is high, a beta-PbO2 nanowire is electrodeposited in microholes of the AAO template through an electrodeposition method,and the stainless steel-based micro-nano array beta-PbO2 anode material is obtained by dissolving the AAO template through a chemical method. The anode material prepared through the method has the advantageous performances that the stability is good, the corrosion resistance is high, the oxidizability is high, the service life is long, the conductivity is high, a large current can be conducted, the micro-nano array of the anode material has controllability, an electrochemical active surface area of an electrode can be effectively expanded, and the electrocatalysis performance can be improved.

A solid-phase reduction method for preparing the Pt / C catalyst used for fuel battery includes such steps as adding metallic salt and complexing agent to solvent, ultrasonic dissolving, adding alkaline substance to regulate pH=8-11, adding C carrier, ultrasonic mixing, vacuum drying, grinding, immersing in the aqueous solution of reducer, vacuum drying, grinding, reducing reaction in N2, cooling in N2, water washing, and vacuum drying. Said catalyst may be Pt / C, Pt-Ru / C, Pt-Mo-Si / C, Pt-Ru-Mo-Si / C, Pt / CNT, Pt-Ru / CNT, Pt-Mo-Si / CNT, or Pt-Ru-Mo-Si / CNT.

The invention relates to a solid contact polymer film lead ion selective electrode and its application. Solid-contact polymer film lead ion-selective electrode is synthesized by liquid-liquid interfacial co-precipitation method with hexagonal disc-like morphology bimodal pores C60 with macropore and mesoporous structure deposited on glassy carbon as ion-electronic conducting layer electrode surface with a sensitive membrane attached to the ion-electron conducting layer. The conductive layer C60 material used in the present invention has a dual-mode pore structure, which can increase the electrochemically active surface area of ​​the material and accelerate the ion-electron conduction rate. The electrophoretic deposition method can form a layer of dense double-mode porous C60 film on the surface of the glassy carbon electrode, which enhances the stability of the solid contact polymer film lead ion selective electrode. The preparation of this new type of polymer film lead ion selective electrode based on the double-mode hole C60 solid contact layer is fast and simple, and does not need to be time-consuming and laborious like the drop coating method, which improves the practicability of the electrode.