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Preparation method and application of Mo3Nb2O14 material with tetragonal tungsten bronze structure
The invention discloses a preparation method and application of a Mo3Nb2O14 material with a tetragonal tungsten bronze structure. The preparation method comprises weighing raw materials according to amolar ratio of MoO3 to Nb2O5 of 3: 2, putting the weighed raw materials into an agate mortar, carrying out grinding and mixing, heating and drying by using an infrared lamp, repeating the grinding and drying steps for 3-5 times, pressing the obtained powder into a sheet with the diameter of 10mm under the pressure of 4MPa, putting the sheet into a glass tube, sealing by adopting a vacuum tube sealing technology, then putting the glass tube into a muffle furnace, heating to 700 DEG C at a heating rate of 5 DEG C/min, keeping the temperature for 12 hours, and sintering to obtain the Mo3Nb2O14 material with the tetragonal tungsten bronze structure. The material is applied to a lithium ion battery negative electrode material. The Mo3Nb2O14 has the advantages of simple preparation method, richraw materials, no pollution and the like, a synthesis method for manufacturing oxygen vacancies by using a vacuum synthesis technology is proposed for the first time, the obtained Mo3Nb2O14 is rich in oxygen vacancies, and when the Mo3Nb2O14 is used as a lithium ion negative electrode material, the oxygen vacancies can significantly improve the electrochemical performance of the material.
本发明公开了一种四方钨青铜结构MoNbO材料的制备方法及其应用。按照MoO与NbO的摩尔比为3:2称取原料；将称取的原料放于玛瑙研钵中进行研磨混合，然后用红外灯加热干燥，重复研磨干燥步骤3~5次，将获得的粉末用4 MPa的压力压制成直径为10 mm的片，将片放入玻璃管中，采用真空封管的技术进行密封，然后置于马弗炉中以5℃/min的升温速率升温至700℃保温12 h进行烧结，即制得四方钨青铜结构MoNbO材料。该材料应用于锂离子电池负极材料。本发明具有制备方法简单，原料丰富，无污染等优点，且首次提出利用真空合成技术制造氧空位的合成方法，所得到的MoNbO富含氧空位，当作为锂离子负极材料时，该氧空位能显著提高材料的电化学性能。
Preparation method and application of Mo3Nb2O14 material with tetragonal tungsten bronze structure
The invention discloses a preparation method and application of a Mo3Nb2O14 material with a tetragonal tungsten bronze structure. The preparation method comprises weighing raw materials according to amolar ratio of MoO3 to Nb2O5 of 3: 2, putting the weighed raw materials into an agate mortar, carrying out grinding and mixing, heating and drying by using an infrared lamp, repeating the grinding and drying steps for 3-5 times, pressing the obtained powder into a sheet with the diameter of 10mm under the pressure of 4MPa, putting the sheet into a glass tube, sealing by adopting a vacuum tube sealing technology, then putting the glass tube into a muffle furnace, heating to 700 DEG C at a heating rate of 5 DEG C/min, keeping the temperature for 12 hours, and sintering to obtain the Mo3Nb2O14 material with the tetragonal tungsten bronze structure. The material is applied to a lithium ion battery negative electrode material. The Mo3Nb2O14 has the advantages of simple preparation method, richraw materials, no pollution and the like, a synthesis method for manufacturing oxygen vacancies by using a vacuum synthesis technology is proposed for the first time, the obtained Mo3Nb2O14 is rich in oxygen vacancies, and when the Mo3Nb2O14 is used as a lithium ion negative electrode material, the oxygen vacancies can significantly improve the electrochemical performance of the material.
本发明公开了一种四方钨青铜结构MoNbO材料的制备方法及其应用。按照MoO与NbO的摩尔比为3:2称取原料；将称取的原料放于玛瑙研钵中进行研磨混合，然后用红外灯加热干燥，重复研磨干燥步骤3~5次，将获得的粉末用4 MPa的压力压制成直径为10 mm的片，将片放入玻璃管中，采用真空封管的技术进行密封，然后置于马弗炉中以5℃/min的升温速率升温至700℃保温12 h进行烧结，即制得四方钨青铜结构MoNbO材料。该材料应用于锂离子电池负极材料。本发明具有制备方法简单，原料丰富，无污染等优点，且首次提出利用真空合成技术制造氧空位的合成方法，所得到的MoNbO富含氧空位，当作为锂离子负极材料时，该氧空位能显著提高材料的电化学性能。
Preparation method and application of Mo3Nb2O14 material with tetragonal tungsten bronze structure
一种四方钨青铜结构MoNbO材料的制备方法及其应用
FANG XUE (Autor:in) / LU FENGQI (Autor:in) / KUANG XIAOJUN (Autor:in)
05.06.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
H01M
Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie
,
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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