Sagger for roasting positive electrode material of lithium ion battery and production method thereof

A lithium-ion battery and cathode material technology, applied in the field of saggers, can solve problems such as unfavorable large-scale production and application, easy melting of cordierite, and expensive raw materials, and achieve excellent alkali corrosion resistance, low production costs, and improved The effect of service life

Active Publication Date: 2018-10-02
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"A high-temperature corrosion-resistant layered saggar for lithium batteries and its preparation method" (CN201610159994.0) patent technology discloses a preparation method for a sagger with a three-layer structure on the bottom surface. Too high, cordierite is prone to melting
"Zircon mullite sagger" (ZL201410189300.9) patented technology is a method of preparing saggers from mullite, tabular alumina and zircon sand. Although the sagger produced by this patented technology has good thermal shock Stability, but the raw material is expensive and the firing temperature is high, which is not conducive to large-scale production and application

Method used

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  • Sagger for roasting positive electrode material of lithium ion battery and production method thereof

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Experimental program
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Effect test

Embodiment 1

[0028] A sagger for roasting positive electrode materials of lithium ion batteries and a preparation method thereof. The steps of the preparation method described in this embodiment are:

[0029] Step 1. Press SiO 2 The content is 45~48wt%, Al 2 o 3 The content is 38-40wt% and the MgO content is 13-15wt%. Mix magnesite, kaolin and quartz sand to obtain the mixture; add zirconia sol with 40-50wt% of the mixture, and ball mill for 3-5 hours. Spray granulation to obtain powder.

[0030] Step 2: Using 55-60wt% calcium hexaaluminate aggregate and 40-45wt% of the powder as raw materials, adding 5-7wt% of the raw material as a binder, mixing evenly, and molding to obtain a sagger matrix , dried, and kept at 1370-1400° C. for 8-10 hours to prepare a sagger for roasting positive electrode materials of lithium-ion batteries.

[0031] The forming method is semi-dry machine press forming.

[0032] The binding agent is water glass.

[0033] The sagger prepared in this example for th...

Embodiment 2

[0035] A sagger for roasting positive electrode materials of lithium ion batteries and a preparation method thereof. The steps of the preparation method described in this embodiment are:

[0036] Step 1. Press SiO 2 The content is 48~51wt%, Al 2 o 3 The content is 36-38wt% and the MgO content is 12-14wt%. Mix magnesite, kaolin and quartz sand to obtain the mixture; add zirconia sol with 40-50wt% of the mixture, and ball mill for 3-5 hours. Spray granulation to obtain powder.

[0037] Step 2: Using 60-65wt% calcium hexaaluminate aggregate and 35-40wt% of the powder as raw materials, adding 5-7wt% of the raw material as a binder, mixing evenly, and molding to prepare the sagger base , dried, and kept at 1370-1400° C. for 8-10 hours to prepare a sagger for roasting positive electrode materials of lithium-ion batteries.

[0038] The forming method is semi-dry machine press forming.

[0039] The binding agent is water glass.

[0040] The sagger prepared in this example for t...

Embodiment 3

[0042] A sagger for roasting positive electrode materials of lithium ion batteries and a preparation method thereof. The steps of the preparation method described in this embodiment are:

[0043] Step 1. Press SiO 2 The content is 51~54wt%, Al 2 o 3 The content is 34-36wt% and the MgO content is 11-13wt%. Mix magnesite, kaolin and quartz sand to obtain the mixture; add zirconia sol with 40-50wt% of the mixture, and ball mill for 3-5 hours. Spray granulation to obtain powder.

[0044]Step 2. Using 65-70wt% calcium hexaaluminate aggregate and 30-35wt% of the powder as raw materials, adding 5-7wt% of the raw material as a binder, mixing evenly, and molding to obtain a sagger matrix , dried, and kept at 1370-1400° C. for 8-10 hours to prepare a sagger for roasting positive electrode materials of lithium-ion batteries.

[0045] The forming method is semi-dry machine press forming.

[0046] The binding agent is water glass.

[0047] The sagger prepared in this example for the...

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Abstract

The invention relates to a sagger for roasting a positive electrode material of a lithium ion battery and a production method thereof. According to a technical scheme, the production method comprisesthe following steps: according to the SiO2 content of 45-54wt%, the Al2O3 content of 32-40wt% and the MgO content of 10-15wt%, mixing magnesite, kaolin and quartz sand to obtain a mixture; then addinga zirconium oxide sol according to an amount of 40-50wt% of the mixture, performing ball milling for 3-5h, and performing spray granulation to obtain powder; with 55-70wt% of calcium hexaaluminate aggregate and 30-45wt% of the powder as raw materials, adding a bonding agent according to an amount of 5-7wt% of the raw materials, uniformly mixing, moulding to obtain a sagger matrix, drying, and preserving heat at 1370-1400 DEG C for 8-10h to obtain the sagger for roasting the positive electrode material of the lithium ion battery. By the production method, the production cost is low, energy issaved, environment friendliness is achieved, and the produced sagger for roasting the positive electrode material of the lithium ion battery has excellent erosion resistance and a long service life.

Description

technical field [0001] The invention belongs to the technical field of saggers. In particular, it relates to a sagger for firing positive electrode materials of lithium ion batteries and a preparation method thereof. Background technique [0002] In the industrial production of lithium-ion battery cathode materials, the high-temperature solid-phase synthesis method has been widely used because of its simple process and low equipment requirements. Saggers are important containers for raw materials in the high-temperature solid-phase synthesis process. With the emergence and development of various new lithium battery cathode materials, the demand for saggers for firing lithium ion battery cathode materials is increasing. The performance of the bowl also puts forward higher requirements. [0003] Patented technology of "roasting sagger for positive electrode material of circulating lithium battery and its preparation method" (ZL201310194571.9) and patented technology of "a sa...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C04B35/10C04B35/622C04B35/63
CPCC04B35/10C04B35/622C04B35/6316C04B2235/3206C04B2235/3217C04B2235/3244C04B2235/3418C04B2235/3427C04B2235/6567C04B2235/77C04B2235/96
Inventor向若飞李远兵李淑静徐娜娜李鑫魏志鹏
OwnerWUHAN UNIV OF SCI & TECH