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A kind of microbial fuel cell anode and preparation method thereof

A fuel cell and microorganism technology, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve the problems of low power generation performance and insufficient mechanical strength, and achieve the effects of low cost, easy adhesion of power generation microorganisms, and simple production.

Active Publication Date: 2022-06-17
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims at the technical problems of insufficient mechanical strength and low electricity generation performance in the existing sediment microbial fuel cell anode, and provides a new type of microbial fuel cell anode

Method used

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  • A kind of microbial fuel cell anode and preparation method thereof
  • A kind of microbial fuel cell anode and preparation method thereof
  • A kind of microbial fuel cell anode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The microbial fuel cell anode of graphite-inorganic silica gel material is prepared by the following method:

[0038] 1. Pretreatment of conductive fibers and current collectors

[0039] (a) Conductive fiber pretreatment

[0040] Conductive carbon fibers (0.05 mm in diameter; 1.0 cm in length) were placed in 10% H at room temperature of 25 °C. 2 SO 4 Soak in the solution for 30 min, after pickling, ultrasonically clean in deionized water 3-4 times for 10 min each time; place in a wide-mouth glass bottle and dry at 60 °C for 2 h.

[0041] (b) Current collector pretreatment

[0042] Soak a stainless steel rod with a cross-sectional diameter of 3.0 mm and a length of 10 cm in 10% NaOH solution for 30 min. After alkaline washing, ultrasonically clean it in deionized water for 2-3 times for 30 min each time; then place it in a wide-mouth glass Dry in the bottle at 60 °C for 2 h.

[0043] 2. Preparation of graphite-inorganic silica material modified microbial fuel cell a...

Embodiment 2

[0052] Building a microbial fuel cell

[0053] The graphite-inorganic silica gel anode material prepared in Example 1 is applied to the sediment-microbial fuel cell, and the specific structure is as follows figure 2 As shown, a sediment-microbial fuel cell was constructed in a PE barrel, including: 1. 1.1000Ω resistor, 2. wire, 3. cylindrical current collector, 4. graphite-inorganic silica material body, 5. plastic isolation device, 6. platinum Mesh cathode, PE bucket size is 30cm×25.5cm (diameter×height). The anode is a graphite-inorganic silica gel material, with a size of 5cm×9cm (diameter×height). The cathode is a platinum mesh with a diameter of 4.5 cm. The PE bucket is built with 10kg of rice field soil (dry weight), and the anode is inserted about 3cm below the soil surface. The surface of the overlying water was about 7 cm from the soil surface, and the cathode was completely immersed in the overlying water. The anode and cathode of the sediment-microbial fuel cel...

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Abstract

The invention discloses a microbial fuel cell anode and a preparation method thereof. The microbial fuel cell anode includes a conductive filler and a current collector; the collector is connected to the electrode material, and the current collector can collect the current of the conductive filler and pass it out; the conductive filler is dispersed in a solid carrier with conductive fibers and conductive powder be made of. The electrode material constructed by the invention not only has high mechanical strength, but also has a porous structure and high electricity production performance, and can be widely popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, in particular to a microbial fuel cell anode and a preparation method thereof. Background technique [0002] Sediments, including sediments and soils, contain large numbers of electrogenic bacteria. The anode is buried in the sediment, the cathode is placed in the water overlying the sediment, and the cathode and the anode are connected in series with wires to form a sediment microbial fuel cell. Sediment microbial fuel cells can generate electricity in sediments and soils and are expected to provide in situ power for small sensors. However, the existing studies mostly use carbon felt, carbon cloth, titanium mesh, stainless steel mesh and other materials as the anode of sediment microbial fuel cells. The mechanical strength of carbon felt and carbon cloth is poor, and the burial process needs to excavate the bottom mud, and the operation cost is high. Titanium mesh and stainless steel mesh ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/88H01M8/16
CPCH01M4/8673H01M4/8652H01M4/8875H01M8/16Y02E60/50Y02P70/50
Inventor 周丰武鲁雨邓欢钟文辉
Owner NANJING NORMAL UNIVERSITY