Preparation of electrode material based on bird manure

A technology of electrode material and guano, which is applied in the field of preparation of electrode materials, can solve the problems of inability to utilize carbon elements, plants cannot absorb carbon elements, etc., and achieve good catalytic activity

Pending Publication Date: 2020-11-13
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the traditional guano utilization and electrode preparation technology: on the one hand, the utilization of guano is mainly plant fertilizers. This method only uses the nitrogen, phosphorus and potassium elements in it, and cannot utilize the higher content of carbon in the feces, because Plants cannot absorb carbon in feces; on the other hand, electrodes often need to be modified to introduce nitrogen and phosphorus elements before use to improve the catalytic activity of certain electrochemical reactions

Method used

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  • Preparation of electrode material based on bird manure
  • Preparation of electrode material based on bird manure
  • Preparation of electrode material based on bird manure

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A preparation of guano-based electrode material, comprising the following steps:

[0029] Step 1: Put 200g of collected guano into 500g of water, and let it settle naturally for 2 hours;

[0030] Step 2. Take out the bottom sediment and dry it at 105°C for later use;

[0031] Step 3, soak the dried sediment in 3mol / L sodium hydroxide solution for 1 hour, then take it out and clean it;

[0032] Step 4, soak the cleaned substance in 3mol / sulfuric acid solution for 1 hour, then take it out and clean it;

[0033] Step 5. Soak the cleaned substance in 3% hydrogen peroxide for 30 minutes, take it out, wash it, and dry it at 105°C;

[0034] Step 6, carbonizing the dried material at 700°C in a nitrogen atmosphere;

[0035] Step 7. After grinding the carbonized powder, disperse it with 5% carbon nanotubes and 5% polyvinylidene fluoride in DMF solvent according to the mass ratio to make electrode paste, coat it on carbon cloth, and dry the solvent , to prepare the electrode. ...

Embodiment 2

[0038] A preparation of guano-based electrode material, comprising the following steps:

[0039] Step 1: Put 300g of collected guano into 500g of water, and let it settle naturally for 2 hours;

[0040] Step 2. Take out the bottom sediment and dry it at 105°C for later use;

[0041] Step 3. After soaking the dried sediment in 3mol / L ammonia solution for 1 hour, take it out and clean it;

[0042] Step 4, soak the cleaned substance in a 5mol / sulfuric acid solution for 1 hour, then take it out and clean it;

[0043] Step 5. Soak the cleaned substance in 3% hydrogen peroxide for 30 minutes, take it out, wash it, and dry it at 105°C;

[0044] Step 6, graphitizing the dried substance at 1800°C in a nitrogen atmosphere;

[0045] Step 7. After grinding the graphitized powder, disperse it with 5% acetylene black and 5% polyvinylidene fluoride in DMF solvent according to the mass ratio to make electrode paste, coat it on carbon cloth, and dry the solvent , to prepare the electrode. ...

Embodiment 3

[0048] A preparation of guano-based electrode material, comprising the following steps:

[0049] Step 1: Put 300g of collected guano into 300g of water, and let it settle naturally for 2 hours;

[0050] Step 2. Take out the bottom sediment and dry it at 105°C for later use;

[0051] Step 3. After soaking the dried sediment in 6mol / L sodium hydroxide solution for 1 hour, take it out and clean it;

[0052] Step 4, soak the cleaned substance in 6mol / sulfuric acid solution for 1 hour, take it out and clean it;

[0053] Step 5. Soak the cleaned substance in 6% hydrogen peroxide for 30 minutes, take it out, wash it, and dry it at 105°C;

[0054] Step 6, carbonizing the dried material at 800°C in a helium atmosphere;

[0055] Step 7. After grinding the carbonized powder, disperse it with 5% carbon nanotubes and 5% polytetrafluoroethylene polyvinylidene fluoride in DMF solvent according to the mass ratio to make an electrode paste, and coat it on the carbon cloth , and dry the sol...

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Abstract

The invention discloses preparation of an electrode material based on bird manure. The preparation method comprises the following steps: dissolving collected bird manure in water, and allowing the dissolved bird manure to naturally settle, wherein the mass of the water is 50-500% of the mass of the bird manure, and settling time is not less than 30 min; taking out bottom sediments, and drying thebottom sediments for later use; soaking the dried sediments in an alkaline solution, and then taking out the sediments for cleaning; soaking a cleaned substance in an acidic solution, and taking out the soaked substance for cleaning; soaking the cleaned substance in hydrogen peroxide with a mass concentration of 3%-30%, taking out the substance, and carrying out cleaning and drying; carbonizing/graphitizing the dried substance in an inert gas atmosphere; and grinding the carbonized/graphitized powder, and mixing the ground powder with a conductive agent and an adhesive to prepare an electrode.According to the method, the waste bird manure with high carbon content are fully utilized as a raw material, the obtained electrode material is stable in performance and low in cost, a new way is provided for treatment of bird manure, and a new raw material source is expanded for carbon electrode preparation.

Description

technical field [0001] The invention relates to the field of electrode materials, in particular to the preparation of a guano-based electrode material. Background technique [0002] Carbon electrodes are widely used in various electrochemical devices, such as supercapacitors, flow batteries, lithium-ion batteries, electrolytic plating, etc. Most of these electrodes are made of petroleum coke or needle coke through calcination, batching, kneading, pressing, roasting, carbonization (graphitization), and machining. In recent years, people have begun to try to prepare carbon electrodes by carbonizing (graphitizing) other carbon-containing chemical or biological materials. The preparation of carbon electrodes using bird feces as raw material has not been reported yet. [0003] In my country's coastal wetlands and inland lakes where birds gather, water eutrophication has become unavoidable, which is directly related to the discharge of nitrogen and phosphorus in bird feces. Eut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05C01B32/205H01M4/583H01M8/18H01M10/24
CPCC01B32/05C01B32/205H01M4/583H01M8/188H01M10/24Y02E60/10Y02E60/50Y02P70/50
Inventor 陈富于陈晖许剑光肖蒙蒙成明李波漫
Owner YANCHENG INST OF TECH
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