Biofuel cell capable of directly oxidizing glucose and preparation method of biofuel cell

Abstract

The invention discloses a biofuel cell capable of directly oxidizing glucose and a preparation method of the biofuel cell. The biofuel cell comprises an anode chamber, a cathode chamber, a membrane for separating the anode chamber and the cathode chamber, and an outer circuit for connecting an anode in the anode chamber and a cathode in the cathode chamber; fuel in the anode chamber is the glucose; fuel in the cathode chamber is oxygen; the anode and the cathode are nickel net or copper net electrodes loaded with nano silver particles. The preparation method comprises the following steps of preparing an electrode, preparing electrolyte, assembling the biofuel cell and the like. The biofuel cell capable of directly oxidizing the glucose, provided by the invention, takes the nickel net or copper net electrodes loaded with the nano silver particles as the anode and the cathode, so that the power density of the cell is effectively improved, and the stability of the biofuel cell under different temprature conditions and different loading conditions is also guaranteed; the preparation method of the biofuel cell is relatively simple and easy, low in cost and is convenient to popularize and apply.

Description

technical field [0001] The invention relates to the technical field of biofuel cells, in particular to a direct oxidation glucose biofuel cell and a preparation method thereof. Background technique [0002] With the continuous shortage of energy in the future and the increasingly serious environmental crisis, it is becoming more and more important to develop new renewable energy sources that do not pollute the environment to replace oil, coal and other major fuels today. Obtaining energy from the environment to drive electronic devices has always been the dream of all mankind. As a new type of renewable energy, glucose biofuel cells can be directly converted into electrical energy under the catalysis of microorganisms or enzymes, with high energy conversion efficiency. ;It can operate effectively in remote and low temperature environments, and has strong environmental adaptability; the power generation process is green and environmentally friendly, and at most only produces ...

AI Technical Summary

Problems solved by technology

[0003] However, while more and more scholars are participating in this research field, the development of glucose biofuel cells is also facing bottlenecks. The bottlenecks are mainly manifested in two aspects: the output power of most glucose biofuel cells is still low and unstable. ;Most systems need to add electron transfer intermediates to improve electricity production capacity, but electron transfer intermediates are expensive and toxic, not suitable for development needs

In addition, microorganisms or enzymes are used as catalysts, although they are widely available and low in cost, but their activity is limited and the running time is short, for example, the survival time of enzymes in acetate buffer is only 8 hours to 2 days

Chinese patent application CN102569861A discloses an enzymatic biofuel cell, which adopts phenolic proton exchange membrane, and uses graphene-nano-gold composites to support laccase and glucose oxidase as catalysts for the cathode and anode respectively, although the battery run cycle, but its output power is still low

Enzyme biofuel cells represent an emerging energy source, but there are still many problems to be solved, such as low open circuit voltage, low output power, and short-term operation stability

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