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Method for preparing manganese dioxide biocell

A technology of manganese dioxide and bio-battery, applied in the direction of biochemical fuel cells, etc., can solve problems such as severe memory effect

Active Publication Date: 2016-11-09
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nickel-cadmium batteries can be charged or discharged repeatedly, and the operation is simple and convenient; but the memory effect is serious, so it must be charged when it is completely out of power to ensure the service life

Method used

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  • Method for preparing manganese dioxide biocell
  • Method for preparing manganese dioxide biocell

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below.

[0021] A method for preparing a manganese dioxide bio-battery, comprising the following steps:

[0022] (1) The cathode base material is nickel foam, and the nickel foam is cut into a circle with a diameter of 3.0cm;

[0023] (2) Weigh the drug according to a certain mass ratio of manganese dioxide / carbon black and place it in a clean beaker, add absolute ethanol until the drug is just submerged, and stir magnetically for 10-30 minutes;

[0024] (3) by MnO 2 The mass ratio of polytetrafluoroethylene / 60% polytetrafluoroethylene is 10-35:1, and the polytetrafluoroethylene is weighed and placed in a 10ml centrifuge tube. While stirring, add the weighed polytetrafluoroethylene solution drop by drop, clean the centrifuge tube with absolute ethanol, add the remaining polytetrafluoroethylene solution into the beaker, and continue stirring for 10-30 minutes; ...

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Abstract

The invention relates to a method for preparing a manganese dioxide biocell, and belongs to the field of microbial fuel cells. According to the method, the proportion of manganese dioxide to carbon black and the proportion of manganese dioxide to 60% polytetrafluoroethylene are controlled by preparing a manganese dioxide cathode; and when the pH is 10.5, the maximum output voltage of the manganese dioxide biocell reaches the maximum value which is 0.6V, and the power density reaches the maximum value which is 2W / m<2>. Experiment results verify that the manganese dioxide foamed nickel cathode can be used for improving the performance of microbial fuel cells, and is a cathode material for long-term running of microbial fuel cells.

Description

technical field [0001] The invention belongs to the field of chemical batteries, and determines a preparation method of a manganese dioxide biological battery composed of a manganese dioxide cathode and a biological anode. Background technique [0002] Chemical battery refers to a type of device that converts the chemical energy of positive and negative active materials into electrical energy through electrochemical reactions. There are many kinds of chemical batteries, and the commonly used ones are mainly dry batteries, storage batteries, and small micro batteries. In addition, there are metal-air batteries, fuel cells and other energy conversion batteries, such as solar cells, thermoelectric batteries, nuclear batteries, etc. [0003] The zinc-manganese dry battery uses a zinc cylinder made of zinc skin as the outer shell, which is both the negative electrode and the protective shell. A carbon rod is inserted in the center as the positive electrode. A copper cap is added...

Claims

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Application Information

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IPC IPC(8): H01M8/16
CPCH01M8/16Y02E60/50
Inventor 刘广立崔婉俊吴伟骆海萍卢耀斌张仁铎
Owner SUN YAT SEN UNIV