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Fuel cell electrocatalytic porous gold electrode with sugar as raw material, preparation method thereof and application of fuel cell electrocatalytic porous gold electrode in artificial intelligence sensor

A technology of micro-fuel cells and gold electrodes, applied in battery electrodes, electrodes, electrotherapy, etc., can solve the problems of unstable enzyme electrodes, high prices, and obstacles to large-scale applications, and achieve the effect of broad application prospects

Pending Publication Date: 2019-08-20
广州钰芯传感科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the good practical application of glucose fuel cells is the oxidation of glucose on the anode. Researchers have tried to load glucose oxidase or glucose dehydrogenase on the anode to prepare enzyme-catalyzed glucose fuel cells, although the selectivity of the electrode after loading the enzyme is much higher. , but the electrode is unstable due to the fragility of the enzyme
Noble metal catalysts such as Pt, Pd or alloys have good electrocatalytic properties in glucose electrooxidation and hydrogen peroxide, but the low output and high price of these noble metals hinder their large-scale application

Method used

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  • Fuel cell electrocatalytic porous gold electrode with sugar as raw material, preparation method thereof and application of fuel cell electrocatalytic porous gold electrode in artificial intelligence sensor
  • Fuel cell electrocatalytic porous gold electrode with sugar as raw material, preparation method thereof and application of fuel cell electrocatalytic porous gold electrode in artificial intelligence sensor
  • Fuel cell electrocatalytic porous gold electrode with sugar as raw material, preparation method thereof and application of fuel cell electrocatalytic porous gold electrode in artificial intelligence sensor

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preparation example Construction

[0044] A method for preparing a negative electrode electrocatalytic porous gold electrode of a fuel cell using glucose carbohydrates as raw materials, comprising the following steps:

[0045] 1) Using nickel foam as the base material, electrodeposit gold-tin alloy;

[0046] 2) Removing metal tin to obtain a modified porous gold electrode. Further, step 1) uses nickel foam as the working electrode, and conducts electrodeposition in a gold-tin alloy solution to obtain a modified porous gold electrode.

[0047] Preferably, in step 1), the composition of the gold-tin alloy solution used for electrodeposition is: gold sulfite 10g / L-50g / L, tin methanesulfonate 10g / L-50g / L, citric acid 40g / L-90g / L, potassium pyrophosphate 50g / L~90g / L, potassium sulfate 10g / L~30g / L; further preferably, in step 1), the composition of described gold-tin alloy solution is: gold sulfite 20g / L ~40g / L, tin methanesulfonate 20g / L~40g / L, citric acid 50g / L~80g / L, potassium pyrophosphate 60g / L~80g / L, potassi...

Embodiment 1

[0057] Preparation of porous gold: nickel foam is used as the working electrode, platinum sheet is used as the counter electrode, and gold-tin alloy solution is used as the electroplating solution. 2 Electrodeposition at current density for 20 min. The composition of the gold-tin plating solution is 20 g / L of gold sulfite, 30 g / L of tin methanesulfonate, 50 g / L of citric acid, 70 g / L of potassium pyrophosphate, and 20 g / L of potassium sulfate.

[0058] After electroplating, wash it with deionized water, then dry it in the air, then soak the electrode in the etching solution 20M potassium hydroxide solution, take it out and soak it in deionized water for 30 minutes, air dry naturally or heat it in an oven at 60°C to obtain foam Nickel modified porous gold.

Embodiment 2

[0060] Preparation of porous gold: use nickel foam as the working electrode, platinum sheet as the counter electrode, and gold-tin alloy solution as the plating solution. 2 Electrodeposition at current density for 20 min. The gold-tin plating solution is composed of gold sulfite 30g / L, tin methanesulfonate 20g / L, citric acid 80g / L, potassium pyrophosphate 70g / L, and potassium sulfate 20g / L.

[0061] After electroplating, wash with deionized water, then dry in the air, then soak the electrode in 10M potassium hydroxide solution of etching solution, take it out and soak in deionized water for 30min, air dry naturally or heat and dry in an oven at 80°C to obtain foam Nickel modified porous gold.

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Abstract

The invention discloses a fuel cell electrocatalytic porous gold electrode with sugar as a raw material, and a preparation method thereof. The preparation method comprises the following steps of (1) electrodepositing a gold-tin alloy with a foam metal as a substrate, and (2) removing a metal tin. The porous gold electrode prepared by the invention has high active site density per unit area and large active area, the electron transport is facilitated, the effect of catalyzing the oxidation of the sugar is higher, and therefore, a fuel cell system with long life operation is provided.

Description

technical field [0001] The invention relates to a method for preparing an electrocatalyzed porous gold (NPG) electrode of a fuel cell using carbohydrates as raw materials, especially for fuel cells using carbohydrates and oxygen as fuels. Background technique [0002] With the development of smart medical technology, implanted medical devices have been widely used. In order to ensure the power supply of implanted medical devices, such as micro batteries that can drive miniature blood sugar concentration detectors, and power pacemakers for heart disease patients Micro batteries, etc., as well as sensors for automatic detection and automatic control in artificial intelligence and smart medical care, also need micro batteries. A sensor (English name: transducer / sensor) is a detection device that can feel the measured information, and can transform the sensed information into an electrical signal or other required form of information output according to a certain rule, so as to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/90A61N1/05A61N1/36
CPCH01M4/8605H01M4/8657H01M4/9041A61N1/05A61N1/36Y02E60/50
Inventor 奚亚男胡淑锦崔皓博
Owner 广州钰芯传感科技有限公司
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