Stratified anode material of O3-type sodium-ion battery and preparation method and application thereof

A sodium-ion battery and cathode material technology, applied in battery electrodes, non-aqueous electrolyte battery electrodes, circuits, etc., can solve problems such as poor cycle performance, and achieve the effect of small specific capacity test deviation, large cost advantage, and good consistency

Inactive Publication Date: 2018-09-04
SHANGHAI INST OF SPACE POWER SOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem of poor cycle performance of the existing sodium ion battery positive electrode material, and provide a kind of O3 type sodium ion battery positive electrode material and its preparation method

Method used

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  • Stratified anode material of O3-type sodium-ion battery and preparation method and application thereof
  • Stratified anode material of O3-type sodium-ion battery and preparation method and application thereof
  • Stratified anode material of O3-type sodium-ion battery and preparation method and application thereof

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Experimental program
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Effect test

Embodiment

[0025] Sodium-ion battery cathode material NaNi 1 / 2 co 1 / 6 mn 3 / 8 o 2 preparation method

[0026] Weigh sodium carbonate, NiO, Co 2 o 3 , MnO 2 and TiO 2 , so that the molar ratio of Na, Ni, Co, and Mn atoms is 1.05:1 / 2:1 / 6:3 / 8.

[0027] Pour the weighed powder into a ball mill jar, add ethanol with a mass of 40% of the total powder mass, mix briefly, cover the ball mill jar tightly, seal it with a parafilm ® film, clamp it on a planetary ball mill, and ball mill at 350r / min for 12 hours Use 250r / min ball mill for 2 hours.

[0028] The slurry after ball milling is directly dried at 80°C, and then simply ground to disperse the large particles. figure 1 It is the SEM picture of the mixed precursor, the material is evenly distributed, and the average particle size is about 1-3um. A stainless steel mold is used to compact the powder into discs with a diameter of 14 mm and a thickness of 5 mm with a hydraulic pump at a compaction pressure of 15 mbar.

[0029] The compact...

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Abstract

The invention discloses a stratified anode material of a O3-type sodium-ion battery and a preparation method and application thereof. The anode material is composed of NaNi1/2Co1/6Mn3/8O2. The preparation method of the anode material is a high temperature solid state method and includes the following steps that metallic oxides and a sodium source are mixed according to the stoichiometric ratio, after even mixing, tabletting is conducted, then temperature programming is conducted for a needed temperature, the temperature is maintained for a while, and then cooling is conducted to obtain the anode material, wherein the metallic oxides are NiO, Co2O3 and MnO2. The synthesis method of the stratified anode material of the O3-type sodium-ion battery is simple, and amplification application is easy; the material is stable in property and even in grain size and has excellent cycle performance and potential for being used by the sodium-ion battery for mass energy storage, and the application prospects are good.

Description

technical field [0001] The invention belongs to the field of battery technology, in particular to an O3 type sodium ion battery cathode material NaNi 1 / 2 co 1 / 6 mn 3 / 8 o 2 , its preparation method and use. Background technique [0002] In recent years, the shortage of fossil energy has become increasingly prominent and secondary problems such as environmental pollution caused by the use of fossil energy have become increasingly serious, making the development of clean and sustainable secondary energy a research focus of various scientific research institutions. Lithium-ion batteries, as a kind of green and environmentally friendly renewable resources, have the advantages of large capacity and high energy density. However, due to the limited reserves of lithium sources and uneven distribution around the world, the prices of lithium-ion battery-related materials are also increasing with lithium-ion batteries. The development of lithium-ion batteries continues to climb, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/13H01M4/139H01M4/36
CPCH01M4/13H01M4/139H01M4/366Y02E60/10
Inventor 王勇郭瑞刘雯解晶莹裴海娟李永
Owner SHANGHAI INST OF SPACE POWER SOURCES
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