Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of bowknot-shaped antimonous oxide

A technology of forming antimony trioxide and butterflies, which is applied in chemical instruments and methods, inorganic chemistry, antimony compounds, etc., can solve the problems of difficult to prepare fine particles, poor electrochemical stability, large volume changes, etc. Chemical properties, the effect of shortening the diffusion distance, and enlarging the specific surface area

Inactive Publication Date: 2012-08-22
ZHEJIANG UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is easy to prepare Sb by traditional hydrolysis method 2 o 3 , but since Sb 3+ Easy and rapid hydrolysis, resulting in Sb 2 o 3 The size is large, it is difficult to prepare Sb with fine particles 2 o 3 particles
And the large particles of Sb 2 o 3 Used as a negative electrode material for lithium-ion batteries due to large volume changes and poor electrochemical stability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of bowknot-shaped antimonous oxide
  • Preparation method of bowknot-shaped antimonous oxide
  • Preparation method of bowknot-shaped antimonous oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1), with SbCl 3 As raw material, SbCl 3 Soluble in ethanol-deionized water mixed solvent with a volume ratio of ethanol and deionized water of 1:1, and prepare SbCl 3 A solution with a concentration of 0.05mol / L;

[0029] 2), put the solution in the autoclave, add surfactant CTAB, CTAB and SbCl 3 The mol ratio is 0.01: 1, and then the pH value is adjusted to 9 with 25wt% (percentage by weight) of ammonia, then the reactor is sealed, reacted for 4 hours at 160 ° C, and then naturally cooled to room temperature;

[0030] 3) Collect the reaction product, wash the solid product alternately and repeatedly with deionized water and absolute ethanol, and dry to obtain the final reaction product bow-tie antimony trioxide.

[0031] Adopt RigakuD / MAX-2550PC type X-ray polycrystal diffractometer to carry out phase analysis to the final reaction product of gained, X-ray diffraction pattern (XRD pattern) is as follows figure 1 ,from figure 1 It can be seen that all diffraction p...

Embodiment 2

[0034] 1), with Sb(NO 3 ) 3 As raw material, Sb(NO 3 ) 3 Soluble in ethanol-deionized water mixed solvent with a volume ratio of ethanol and deionized water of 1:2, and prepare SbCl 3 A solution with a concentration of 0.01mol / L;

[0035] 2), put the solution in the autoclave, add surfactant SDS, SDS and SbCl 3 The molar ratio is 0.5: 1, then the pH value is adjusted to 10 with 6M (mol / L) NaOH aqueous solution, then the reactor is sealed, reacted at 180 ° C for 8 hours, and then naturally cooled to room temperature;

[0036] 3) Collect the reaction product, wash the solid product alternately and repeatedly with deionized water and absolute ethanol, and dry to obtain the final reaction product bow-tie antimony trioxide.

[0037] Adopt RigakuD / MAX-2550PC type X-ray polycrystal diffractometer to carry out phase analysis to the final reaction product of gained, XRD collection of illustrative plates is as follows image 3 Shown: All diffraction peaks can be attributed to Sb ...

Embodiment 3

[0040] 1), with Sb(CH 3 COO) 3 As raw material, Sb(CH 3 COO) 3 Soluble in ethanol-deionized water mixed solvent with a volume ratio of ethanol and deionized water of 1:3, and prepare SbCl 3 A solution with a concentration of 0.075mol / L;

[0041] 2), put the solution in the autoclave, add surfactant PVP (Sinopharm Chemical Reagent Co., Ltd., molecular weight is about 5800), PVP and Sb(CH 3 COO) 3 The molar ratio is 1: 1, and the pH value is adjusted to 11 with 25wt% ammonia water, then the reactor is sealed, reacted for 2 hours at 200 ° C, and then naturally cooled to room temperature;

[0042] 3) Collect the reaction product, wash the solid product alternately and repeatedly with deionized water and absolute ethanol, and dry to obtain the final reaction product bow-tie antimony trioxide.

[0043] Adopt RigakuD / MAX-2550PC type X-ray polycrystal diffractometer to carry out phase analysis to the final reaction product of gained, XRD collection of illustrative plates is as fol...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of bowknot-shaped antimonous oxide. The preparation method comprises the following steps of: dissolving a raw material, i.e. a trivalent antimony salt, in an ethanol-deionized water mixing solvent according to a volume ratio of 1: 1-1: 3 to prepare 0.01-0.1mol / L of solution; adding a surfactant to the solution, adding an alkaline regulator to regulate the pH value to be 8-12, then reacting for 1-24h at 100-250 DEG C in a sealed environment and naturally cooling to the room temperature; and collecting a reaction product, alternately washing and drying the solid product through deionized water and absolute ethyl alcohol to obtain the bowknot-shaped antimonous oxide. The preparation method disclosed by the invention is simple and controllable, hasshort period and low cost and is beneficial to large-scale industrial production; and the obtained product has high purity and uniformly-distributed particle sizes and is of a bowknot shape because two ends of the particle are split.

Description

technical field [0001] The invention relates to the field of composite materials for lithium ion batteries, in particular to a method for preparing bowtie-shaped antimony trioxide. Background technique [0002] Lithium-ion batteries have the advantages of high working voltage, high energy density, and good safety performance. Therefore, they are widely used in portable electronic products such as digital cameras, mobile phones, and notebook computers. They also have application prospects for electric bicycles and electric vehicles. The anode materials of current commercial lithium-ion batteries are graphite and other forms of carbon materials. Since the theoretical capacity of graphite is only 372mAh g -1 , and the lithium intercalation potential is low, which limits its application range. [0003] Compared with more traditional carbon materials, certain metal oxides have higher lithium storage capacity, such as Sb 2 o 3 The lithium storage capacity reaches 550mAh·g -1 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01G30/00
Inventor 谢健潘瑞军郑云肖刘双宇曹高劭赵新兵
Owner ZHEJIANG UNIV