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Lotus root starch carbon sphere biofuel cell and preparation method thereof

A biofuel cell, lotus root starch technology, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve the problems of low enzyme immobilization, low battery power density, weak electron transfer between enzymes and electrodes, etc. The effect of improving electron transfer rate and sufficient source

Inactive Publication Date: 2020-05-12
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the problems of low enzyme immobilization in traditional enzyme fuel cells and weak electron transfer between enzymes and electrodes resulting in low battery power density, the invention provides a lotus root powder carbon sphere biofuel cell and a preparation method thereof

Method used

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  • Lotus root starch carbon sphere biofuel cell and preparation method thereof
  • Lotus root starch carbon sphere biofuel cell and preparation method thereof
  • Lotus root starch carbon sphere biofuel cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The Nafion / C-GOX-MB / GCE anode and Nafion / C-BOD-MB / GCE cathode of this embodiment are prepared by the following steps:

[0033] (1) Preparation of lotus root powder carbon spheres: Weigh 4 g of lotus root powder, put it into a mortar and grind it thoroughly, then dissolve it in 10 mL of deionized water and stir it for 2 h to disperse it. Add 50mL of boiling water to gelatinize and stir for 0.5h, then transfer to a polytetrafluoroethylene-lined stainless steel autoclave, and synthesize in a water bath at 160-180°C. After cooling to room temperature, the mixture was washed by centrifugation, washed with water for 3 times and washed with alcohol for 3 times, and then put it in a constant temperature drying oven at 60°C to dry to obtain carbon sphere nanomaterials, the appearance of which is as follows: figure 1 As shown, the particle size is 400-600nm.

[0034] (2) Preparation of bioanode and biocathode based on lotus root starch carbon spheres

[0035] The glassy carbon ...

Embodiment 2

[0037] In combination with the preparation of the fuel cell in Example 1, the influence of different methylene blue concentrations on the power performance of the battery was explored. The specific steps are as follows:

[0038]5mg / mL lotus root starch carbon sphere chitosan solution and 10mg / mL GOD chitosan solution and 6mg / mL, 8mg / mL, 10mg / mL, 12mg / mL, 14mg / mL methylene blue chitosan solution respectively The volume is 1:1:1 mixing, other conditions are the same as in Example 1, the power test is carried out in the glucose solution, the results are as follows figure 2 Shown in B. As the concentration of methylene blue increases, the power of the fuel cell first increases and then decreases. This may be due to the increase in the amount of MB adsorbed on the anode surface due to the increase in MB concentration. It can be seen from the figure that when the concentration of methylene blue is 10mg / mL, the constructed fuel cell has a larger open circuit voltage and output pow...

Embodiment 3

[0040] In combination with the preparation of the fuel cell in Example 1, the influence of the volume ratio of the lotus root powder carbon sphere solution to the GOX solution on the power performance of the battery was explored. The specific steps are as follows:

[0041] 5mg / mL lotus root starch carbon sphere chitosan solution: the volume ratio of 10mg / mL GOX chitosan solution is 0.5:1, 1:1, 2:1 and 3:1 respectively, other conditions are the same as in Example 1, in glucose solution In the power measurement comparison, the results are as follows figure 2 As shown in A. It can be seen from the figure that when the ratio of lotus root starch carbon sphere chitosan and GOX chitosan is 1:1, the constructed fuel cell has a larger open circuit voltage and output power.

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Abstract

The invention discloses a lotus root starch carbon sphere biofuel cell and a preparation method thereof. According to the preparation method disclosed by the invention, the lotus root starch carbon spheres with the particle size of 400-600 nm are prepared by utilizing a simple hydrothermal synthesis method; rich active sites are provided for immobilization and electron transfer of glucose oxidase,the electron transfer rate is significantly improved, and the Nafion / C-GOX-MB / GCE electrode is adopted as a biological anode, the Nafion / C-BOD-MB / GCE electrode is adopted as a biological cathode, andglucose is adopted as the biofuel to prepare the biofuel cell. According to the glucose fuel cell, the carbon spheres are prepared from the lotus root starch, the operation is simple, the cost is low, and the glucose fuel cell has good conductivity and sensitivity; in addition, the fuel cell does not need a diaphragm, has the relatively high open-circuit voltage, is used for measuring the performance of the cell in a 50 mM glucose buffer solution, has the output voltage of about 0.65 V and the output power density of 6.3 [mu]W.cm<-2>, and is expected to become one of next-generation green sustainable energy equipment.

Description

technical field [0001] The invention relates to the technical field of biofuels, in particular to a lotus root powder carbon sphere biofuel cell and a preparation method thereof. Background technique [0002] Due to the shortage of fossil energy in the world and the harm to the environment caused by the exploitation and use of fossil energy, the search for new renewable energy has attracted widespread attention all over the world. Compared with traditional energy sources, fuel cells do not involve combustion in the reaction process, so the energy conversion is not limited by the Carnot cycle. It has the remarkable characteristics of high efficiency, cleanliness, and environmental friendliness. It is the preferred clean and efficient power generation technology in the 21st century. In recent years, the development of biofuel cells has aroused people's great interest. Biofuel is a green and renewable energy source, which can replace many fossil fuels. Because of its diversity ...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/96H01M8/16
CPCH01M4/88H01M4/96H01M8/16Y02E60/50Y02P70/50
Inventor 徐琴赵颖俞清华胡效亚
Owner YANGZHOU UNIV
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