Preparation process of positive electrode material for sodium ion battery

A technology for sodium ion batteries and cathode materials, which is applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of low volume energy density and low active material content, and achieves improved cycle performance, improved fiber-forming ability, and good electrical conductivity. effect of ability

Inactive Publication Date: 2014-11-26
SHAANXI UNIV OF TECH
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Problems solved by technology

However, the particle size of nanoparticles is small, and the content of active

Method used

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  • Preparation process of positive electrode material for sodium ion battery
  • Preparation process of positive electrode material for sodium ion battery

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Embodiment Construction

[0026] A kind of positive electrode material preparation technology of sodium ion battery, comprises the following steps:

[0027] The first step is the preparation of the precursor sol. Add manganese salt, sodium salt, iron salt and nickel salt to the water. After stirring evenly, add the precipitation inhibitor. After homogenization, the precursor sol is obtained.

[0028] Table 1 lists the composition of 12 example formulations numbered 1-12. According to the different embodiments in Table 1, the types and addition amounts of manganese salt, sodium salt, iron salt and nickel salt are determined. Table 2 lists the formula composition of precipitation inhibitor, fiber forming agent and colloid growth inhibitor of 12 examples numbered 1-12. According to the different examples in Table 2, the types and addition amounts of the precipitation inhibitor, fiber-forming agent, and micelle growth inhibitor were determined.

[0029] Table 1. Recipe for Salt

[0030]

[0031] Tab...

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Abstract

The invention discloses a preparation process of a positive electrode material for a sodium ion battery. The preparation process is characterized by comprising the following steps: adding manganese salt, sodium salt, ferric salt and nickel salt into water, uniformly stirring, and then adding a precipitation inhibitor; after uniformly mixing, adding a fiber forming agent and a colloidal particle growth control agent, and uniformly stirring to obtain precursor sol; pouring a precursor solution into a centrifugal spinning machine, so as to obtain raw cotton of an electrode material; and drying and calcining the cotton wool, so as to obtain electrode material cotton at last. The sodium ion battery applying the cotton has the characteristics of high charge and discharge capacity and good cycle performance.

Description

technical field [0001] The invention relates to a method for preparing an electrode material for a sodium ion battery. Background technique [0002] At present, the research on high-performance lithium-ion batteries and their electrode materials is a hot spot in the fields of electrochemistry, material chemistry, physics, etc., and the properties of sodium ions and lithium ions, which are both the main group I of the periodic table of elements, have many similarities. At this point, sodium ions are fully 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 with lower decomposition voltages, so the safety performance is better [Jia Xuping, Chen Mei. Research progress in electrode ...

Claims

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Application Information

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IPC IPC(8): H01M4/50H01M4/48
CPCH01M4/485H01M4/505H01M4/628H01M10/054Y02E60/10
Inventor 谭宏斌马小玲郭从盛董洪峰韩文松李闯
Owner SHAANXI UNIV OF TECH
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