Method for preparing sulfur battery positive pole by using protein

A sulfur battery and protein technology, which is applied in the field of preparing sulfur battery anodes by using proteins, can solve the problems such as difficulty in preparing porous materials with small porosity, sulfur battery research is only in the experimental stage, and cannot meet commercial requirements, etc. Reduce the possibility of explosion and facilitate the effect of sulfur loading

Active Publication Date: 2018-01-26
XIAN UNIV OF TECH
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Problems solved by technology

[0004] Although there are many studies on sulfurizing carbon materials in the prior art, due to the difficulty in controlling the carbon-nitrogen ratio of the nitriding process, it is difficult to make the porosity of porous materials smaller, so that the research on sulfur batteries is only in the experimental stage and cannot be commercialized. Require

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  • Method for preparing sulfur battery positive pole by using protein
  • Method for preparing sulfur battery positive pole by using protein

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preparation example Construction

[0030] The preparation process of alkaline alum water is as follows:

[0031] Alum is dissolved in distilled water to prepare alum water, wherein 15g to 25g of alum is added per liter of distilled water; the pH value of the alum water is adjusted to 10 with NaOH.

[0032] Step 2, drying the pasty mixture obtained in step 1 to obtain lumps;

[0033] During the drying process: the drying temperature is controlled at 90°C to 110°C, and the drying time is controlled at 20min to 60min.

[0034] Step 3, putting the block obtained in step 2 into a sintering furnace with nitrogen for calcination to obtain a powder;

[0035] In the calcination process: the nitrogen pressure is 0.11MPa-0.12MPa, the sintering temperature is 800°C-850°C, and the sintering time is 3.5h-4h.

[0036] Step 4, mixing the powder obtained in step 3 with sublimed sulfur and then grinding to obtain a mixed powder, and then heat-treating the obtained mixed powder to obtain a sulfur-loaded C-N powder, specifically...

Embodiment 1

[0046] Step 1. Weigh egg white, starch and alkaline alum water respectively according to the mass ratio of 1:0.5:1, and mix the weighed egg white, starch and alkaline alum water together to form a paste mixture; wherein, The preparation process of alkaline alum water is: dissolving alum in distilled water is mixed with alum water, wherein every liter of distilled water adds the alum of 15g, adjusts the pH value of alum water to 10 with NaOH;

[0047] Step 2, drying the pasty mixture obtained in step 1 to obtain lumps;

[0048] During the drying process: the drying temperature is controlled at 90°C, and the drying time is controlled at 60 minutes;

[0049] Step 3, putting the block obtained in step 2 into a sintering furnace with nitrogen for calcination to obtain a powder;

[0050] In the calcination process: the nitrogen pressure is 0.11MPa, the sintering temperature is 800°C, and the sintering time is 4h;

[0051] Step 4, mixing the powder obtained in step 3 with sublimed ...

Embodiment 2

[0059]Step 1. Weigh egg white, starch and alkaline alum water respectively according to the mass ratio of 1.5:1:1, and mix the weighed egg white, starch and alkaline alum water together to form a paste mixture; wherein, The preparation process of alkaline alum water is: dissolving alum in distilled water is mixed with alum water, wherein every liter of distilled water adds the alum of 18g, adjusts the pH value of alum water to 10 with NaOH;

[0060] Step 2, drying the pasty mixture obtained in step 1 to obtain lumps;

[0061] During the drying process: the drying temperature is controlled at 95°C, and the drying time is controlled at 55 minutes;

[0062] Step 3, putting the block obtained in step 2 into a sintering furnace with nitrogen for calcination to obtain a powder;

[0063] In the calcination process: the nitrogen pressure is 0.11MPa, the sintering temperature is 810°C, and the sintering time is 4h;

[0064] Step 4, mixing the powder obtained in step 3 with sublimed s...

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Abstract

The invention discloses a method for preparing a sulfur battery positive pole by using protein. The method specifically comprises the following steps: step one, weighing egg white, starch and alkalinealum water respectively, and mixing the weighed materials to form a pasty mixture; step two, drying the pasty mixture obtained through the step one to obtain a cake; step three, putting the cake obtained through the step two into a sintering furnace in which nitrogen is introduced for calcinations treatment to obtain powder; step four, after mixing the powder obtained through the step three withsublimed sulfur, carrying out grinding treatment to obtain mixed powder, and heating the mixed powder to obtain sulfur-carried C-N powder; and step five, mixing the sulfur-carried C-N powder obtainedthrough the step four with a conducting agent and an adhesive to form a mixed material, and carrying out tabletting treatment on the mixed material to obtain the sulfur battery positive pole. A nettedcarbon-nitrogen structure is contained in the positive pole prepared according to the method disclosed by the invention, the capacity of a battery can be increased, the charging and discharging of the battery are easy, and the service life of the battery can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of battery material preparation, and in particular relates to a method for preparing a sulfur battery anode by using protein. Background technique [0002] Sulfur batteries have the advantages of low manufacturing cost, large battery capacity, environmental friendliness, wide operating temperature range, and relatively high safety, and are the most promising commercial batteries. However, in the anode of the sulfur battery, due to the low conductivity of sulfur, it is easy to produce intermediate compounds, so that the utilization of sulfur is low, and the volume density difference between sulfur and sulfur compounds is large, which is easy to cause swelling and poor battery stability. [0003] For this reason, people use porous materials, such as: carbon nanomaterials, graphene, and carbon-nitrogen materials to increase the sulfur loading capacity and the conductivity of the electrode; they also solve the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/139H01M4/04H01M4/36H01M4/38H01M4/62H01M10/052
CPCY02E60/10
Inventor 冯拉俊徐红张静张小欢
Owner XIAN UNIV OF TECH
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