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Tourmaline/manganese dioxide composite cathode used for deposition-type microbial fuel cell and manufacturing method thereof

A manganese dioxide and fuel cell technology, applied in biochemical fuel cells, battery electrodes, electrical components, etc., can solve the problems of high cost of cathode, complex production process, low power generation efficiency of cheap materials, etc., and achieve cost reduction and cathode production. The process is simple and the effect is conducive to the expansion of production

Active Publication Date: 2019-12-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problems of the high cost of the cathode in the existing sedimentary microbial fuel cell, the complicated manufacturing process, and the low efficiency of electricity generation by using cheap materials, and provides a tourmaline / dielectric catalyst for the depositional microbial fuel cell. Manganese oxide composite cathode and its preparation method

Method used

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  • Tourmaline/manganese dioxide composite cathode used for deposition-type microbial fuel cell and manufacturing method thereof

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Embodiment 1

[0024] The basic functional structure of the tourmaline / manganese dioxide composite cathode in this embodiment is made by bonding the rolled activated carbon air cathode substrate and the tourmaline / manganese dioxide through polytetrafluoroethylene (PTFE). Specifically: cut the roll-pressed activated carbon air cathode substrate into 3 circular plates with a diameter of 6.5 cm, wash them with acetone for 3 times, deionized water for 3 times, and ethanol ultrasonic cleaning for 3 times to remove surface impurities. After drying at 30°C for later use; then weigh 0.236g manganese dioxide and 0.157g tourmaline, add 10mL deionized water and 0.5mL polytetrafluoroethylene suspension PTFE with a mass concentration of 60%wt, and use ultrasonic frequency at 90KHz Disperse with an ultrasonic instrument for 10 minutes, mix well, apply evenly on the roll-pressed activated carbon air cathode with a brush, and dry at 40°C to obtain a tourmaline / manganese dioxide composite cathode.

[0025] W...

Embodiment 2

[0027] The difference between this embodiment and embodiment 1 is that the dosage of manganese dioxide becomes 0.387g, tourmaline is 0.233g, and other steps and parameters are the same as in embodiment 1.

Embodiment 3

[0029] The difference between this embodiment and the first or second embodiment is that the tourmaline uses 450 objects, and other steps and parameters are the same as the first embodiment.

[0030] Applying the composite cathode obtained in Example 2 to a sedimentary microbial fuel cell reactor is a column type single-chamber biocathode reactor, and the material of the reactor shell is ordinary carbonate silica glass. The overall appearance of the reactor is a cylinder, and its size features are: outer diameter 7cm, inner diameter 6.5cm, actual height 25cm, effective height 18cm, and effective volume about 600ml.

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Abstract

The invention discloses a tourmaline / manganese dioxide composite cathode used for a deposition-type microbial fuel cell and a manufacturing method thereof and belongs to the microbial fuel cell field.In the invention, problems of high manufacturing cost, a complex manufacturing process and low productivity efficiency of the cathode in an existing deposition-type microbial fuel cell are solved. The composite cathode is manufactured by bonding an activated carbon layer and tourmaline / manganese dioxide through PTFE. The obtained tourmaline / manganese dioxide composite cathode is high in productivity effect, low in manufacturing cost, simple in preparation and manufacturing process, short in consumed time and is good for expanded production of the cathode.

Description

technical field [0001] The invention belongs to the field of microbial fuel cells; in particular, it relates to a tourmaline / manganese dioxide composite cathode for depositional microbial fuel cells (SMFC) and a preparation method thereof. Background technique [0002] In recent years, there have been more and more researches on depositional microbial fuel cells (SMFCs). Studies have found that through the intervention of electrodes, microorganisms in many different environments can rely on them to establish independent electrochemical systems. This convenient feature is one of the reasons for the rapid progress of microbial electrochemical systems. For SMFC, the research direction is not limited to the level of power generation, but also the treatment of organic pollutants. SMFC has certain prospects in the field of environmental protection, mainly for the following reasons: (1) When microbial degradation removes organic pollutants, the electrode acts as a safe, green and ...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/88H01M8/16
CPCH01M4/9016H01M4/90H01M4/9083H01M4/8828H01M8/16Y02E60/50Y02P70/50
Inventor 邢德峰李威娄宇房安然朱家庚
Owner HARBIN INST OF TECH
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