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Preparation process of composite fiber electrode material for sodium-ion battery

A sodium-ion battery and composite fiber technology, applied in battery electrodes, non-aqueous electrolyte storage batteries, circuits, etc., can solve the problems of low volumetric energy density and low active material content, and achieve simplified preparation process, low cost, and improved cycle performance Effect

Inactive Publication Date: 2014-11-19
SHAANXI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the particle size of nanoparticles is small, and the content of active substances per unit volume is low, resulting in low volumetric energy density.

Method used

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  • Preparation process of composite fiber electrode material for sodium-ion battery

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Embodiment Construction

[0021] A preparation process for a composite fiber electrode material for a sodium ion battery, comprising the steps of:

[0022] The first step: prepare the precursor solution, add 50% antimony oxide (Sb 2 o 3 ), then add any acid of nitric acid, hydrochloric acid, sulfuric acid and tartaric acid with a molar mass of 300% of antimony oxide to dissolve the antimony oxide to obtain a solution containing antimony, and then add 50-100% deionized water quality to the solution % viscosity regulator and water mass 50-100% buffer phase forming agent to obtain a precursor solution. Wherein, the viscosity regulator is one of polyvinylpyrrolidone, polyvinyl alcohol, polyethylene glycol, and polyacrylic acid; the buffer phase forming agent is one of cellulose, sucrose, and glucose; Table 1 lists the number as 1 The formula composition of 9 embodiments of -9.

[0023] The formula of table 1 raw material

[0024]

[0025] Note: The addition amount of nitric acid, hydrochloric acid a...

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Abstract

The invention discloses a preparation process of a composite fiber electrode material for a sodium-ion battery. The process is characterized by comprising the steps of: adding antimony oxide in water, and adding acid to dissolve antimony oxide, so as to obtain a solution containing antimony; adding a viscosity conditioning agent and a buffer phase forming agent into the solution to obtain a precursor solution; pouring the precursor solution into a centrifugal spinning machine, and conducting a centrifugal spinning method to obtain fiber electrode precursors; drying and calcining the precursors to obtain an antimony oxide and buffer phase composite fiber electrode material. The fiber is used for sodium-ion batteries, and has the characteristics of high capacity and good cycle performance.

Description

technical field [0001] The invention relates to a preparation method of a fibrous 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 the same time, sodium ions can completely construct a widely used secondary battery like lithium ions. Moreover, compared with lithium-ion batteries, sodium-ion batteries have lower raw material costs than lithium-ion batteries, and higher half-cell potentials than lithium-ion batteries (E 0Na+ / Na=E 0Li+ / Li+0.3V), it is suitable to use an electrolyte with a lower decomposition voltage, so the safety performance is better [Jia Xuping, Chen Mei. Research progress in electrode materials for sodium-i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/139
CPCH01M4/362H01M10/05Y02E60/10
Inventor 谭宏斌马小玲郭从盛董洪峰韩文松罗清威
Owner SHAANXI UNIV OF TECH
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