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Method and device for storing bioelectrical energy by virtue of capacitive anode

A capacitive and bioelectric technology, applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems that MFCs have no large-scale industrial application, difficult to directly drive MFC, difficult to electronic equipment, etc., to achieve easy industrial application and device The effect of reduced occupied area and simple method

Active Publication Date: 2013-11-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But unfortunately, MFCs still have no large-scale industrial applications, because the lower energy is difficult to directly drive commercial electronic devices
For example, electrochemical sensors for environmental monitoring usually require 50 mW, according to the literature such sensors are difficult to be directly driven by MFC

Method used

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  • Method and device for storing bioelectrical energy by virtue of capacitive anode
  • Method and device for storing bioelectrical energy by virtue of capacitive anode
  • Method and device for storing bioelectrical energy by virtue of capacitive anode

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the anode is composed of an anode wire (titanium wire) a, a supercapacitor material modification layer b, and a substrate electrode c.

[0032] Prepare supercapacitive electrodes as follows:

[0033] (1) Put the graphite felt in a hydrogen peroxide solution with a mass fraction of 10%, boil it in a water bath at 90 °C for 2 hours, then boil it with deionized water at the same temperature for 2 hours, and then dry it in an oven;

[0034] (2) Cut the graphite felt into (length 2 cm × width 3 cm) size;

[0035] (3) Wear the graphite felt with titanium wire.

[0036] (4) Modification of graphite felt: 5 mmol / L anthraquinone-2,6-disulfonic acid sodium salt (AQS) was used to modify graphite felt, and the volume ratio of pyrrole was controlled at 100 (AQS):1. Electrochemical workstation CHI 660C applied 45 C electricity to the graphite felt at a constant voltage of 0.8 V to obtain polypyrrole (PPy) / (AQS) modified electrodes.

[0037] In th...

Embodiment 2

[0045] The difference between this embodiment and Example 1 is that the anode modification method uses polypyrrole (PPy) / electrochemically reduced graphene (RGO) material.

[0046] The modified anode in this embodiment is prepared as follows:

[0047] (1) Dissolve 200 mg of graphene oxide in 40 mL of deionized water to a concentration of 5 mg·mL -1 aqueous suspension of graphene oxide. Then 8 mmol of pyrrole monomer was added to the graphene oxide aqueous suspension solution to prepare a mixed solution, and the concentration of the conductive polymer monomer in the mixed solution was 0.2 mol L -1 , after magnetic stirring at room temperature for 10 min, and ultrasonication for 5 min, the mixed electrolyte was prepared;

[0048] (2) Put the graphite felt in a hydrogen peroxide solution with a mass fraction of 10%, boil it in a water bath at 90 °C for 2 hours, then boil it with deionized water at the same temperature for 2 hours, and then dry it in an oven to dry the graphi...

Embodiment 3

[0053] The difference between this embodiment and Example 1 is that the anode modification method uses RuO 2 Material.

[0054] The modified anode in this embodiment is prepared as follows:

[0055] (1) Add 1 g of RuCl 3 RuCl mixed with 50 mL of aqueous solution 3 aqueous solution;

[0056] (2) Put the graphite felt in a hydrogen peroxide solution with a mass fraction of 10%, boil it in a water bath at 90 °C for 2 hours, then boil it with deionized water at the same temperature for 2 hours, and then dry it in an oven to dry the graphite felt Cut it into a size (length 2 cm × width 3 cm), and thread the graphite felt with titanium wire to obtain a pretreated graphite felt anode.

[0057] (3) Using an electrochemical workstation, a three-electrode system is used, with the pretreated graphite felt anode as the working electrode, the platinum electrode as the counter electrode, and the saturated calomel electrode as the reference electrode, and the three electrodes are plac...

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Abstract

The invention discloses a method and device for storing bioelectrical energy by virtue of a capacitive anode. The device comprises an anode chamber, a cathode chamber and an ion exchange membrane, wherein the anode chamber and the cathode chamber are divided by the ion exchange membrane, and the anode of the anode chamber adopts a capacitive electrode; electricity generating bacteria and organic matters are added into the anode chamber to form a MFC (Microbial Fuel Cell) anode chamber. The electrode decorated with a super capacitor material is put in the MFC anode chamber, a built-in capacitance system is formed in the cell, and an electricity storing process of electricity generating bacteria bioelectricity in the anode chamber is realized under the condition of an open circuit. A load circuit is accessed, the device externally discharges, and the discharge of the stored bioelectricity can be realized. Meanwhile, the bioelectricity stored under the condition of the open circuit of the decorated anode is utilized to realize the promotion of the transient output power of an MFC when the circuit accessing the device is connected.

Description

technical field [0001] The invention relates to the field of microbial fuel cells, in particular to a method and device for storing bioelectric energy by using a capacitive anode. Background technique [0002] The increasingly serious problem of environmental pollution and the search for new energy sources are two fundamental problems facing human beings on the road of sustainable development. With the development of economy, waste disposal has become an important problem. Among them, industrial wastewater has complex components, strong toxicity, and bad impact on the environment, making it extremely difficult to treat. However, energy consumption is an important influencing factor in wastewater treatment. In the United States, 5% of the nation's electricity is used to run water infrastructure, while 1.5% is used solely for sewage treatment. [0003] With the depletion of fossil fuels, human beings have to look for new alternative energy sources. With the increasingly se...

Claims

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Application Information

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IPC IPC(8): H01M8/16H01M4/86
CPCY02E60/527Y02E60/50
Inventor 冯春华吕志盛谢道海卫恒臣韦朝海
Owner SOUTH CHINA UNIV OF TECH
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