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Process for preparing electrode material of sodium-ion battery by use of ammonium jarosite and chalcanthite

The technology of sodium ion battery and jarosite is applied in battery electrodes, secondary batteries, circuits and other directions, and can solve the problems of increasing the preparation cost, multi-component impurities, etc., and achieve the effects of low cost, good performance and simple process

Inactive Publication Date: 2015-05-20
SHAANXI UNIV OF TECH
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Problems solved by technology

Multivariate doping further increases the preparation cost

Method used

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  • Process for preparing electrode material of sodium-ion battery by use of ammonium jarosite and chalcanthite

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Embodiment Construction

[0015] A kind of technology that prepares sodium ion electrode material with jarosite and bile vitriol, comprises the following steps:

[0016] (1) add dilute sulfuric acid solution in jarosite, stir until jarosite is dissolved, add gallosite, after stirring evenly, add spinning aid and end-capping agent, obtain precursor sol (recipe is shown in Table 1); It is the industrial waste discharged from the zinc smelter;

[0017] (2) Concentrating the precursor sol at 60°C;

[0018] (3) Put the concentrated precursor sol into the centrifugal spinning machine, and obtain the electrode material cotton precursor by centrifugal spinning process;

[0019] (4) The electrode material cotton precursor was dried, then heated to 900°C for firing in a protective atmosphere generated by the decomposition of kerosene or diesel, and kept for 6 hours to obtain a cotton-like sodium ion electrode material.

[0020] Using the fiber cotton as the negative electrode and sodium as the counter electrod...

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Abstract

The invention discloses a process for preparing the electrode material of a sodium-ion battery by use of ammonium jarosite and chalcanthite. The process is characterized by comprising the steps of adding a dilute sulfuric acid solution into ammonium jarosite, stirring until the ammonium jarosite is dissolved, adding with chalcanthite, stirring uniformly, and adding with spin finish aid and end-capping reagent to obtain an electrode material precursor solution; concentrating the solution, spinning and calcining to obtain a composite porous electrode material taking copper ferrite and carbon as main phases. According to the process, industrial waste residues are adopted to prepare the electrode material with high additional value, and the process has the characteristics of low cost, good performance, simple process and the like.

Description

technical field [0001] The invention relates to a preparation process of an electrode material for a sodium-ion battery, in particular to a method for preparing the electrode material for a sodium-ion battery by utilizing the waste slag-jaosite discharged from a zinc smelter. Background technique [0002] Research on high-performance lithium-ion batteries and their electrode materials is a hot spot in the fields of electrochemistry, material chemistry, and physics. The properties of sodium ions and lithium ions, which are both the main group I of the periodic table of elements, have many similarities. Sodium ions are perfectly capable of constructing a widely used secondary battery like lithium-ion batteries. Moreover, compared with lithium-ion batteries, sodium-ion batteries have lower raw material costs than lithium-ion batteries, and the half-cell potential (E 0Na+ / Na=E 0Li+ / Li+0.3V) is higher than that of lithium-ion batteries, and it is suitable to use electrolytes ...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/52H01M4/62
CPCH01M4/362H01M4/523H01M10/054Y02E60/10
Inventor 谭宏斌马小玲侯小强董洪峰郭从盛
Owner SHAANXI UNIV OF TECH
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