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2 747 565

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(51)

IPC

H01M4/58(2010-01-01)

(21) (22)

Application

2020118087, 2020-05-21

(24)

Start date

2020-05-21

(22)

Actual filing date

2020-05-21

(45)

Published

2021-05-07

(72)

Inventor

Kosova Nina VasilevnaSemykina Darya Olegovna

(73)

Holder

Federalnoe Gosudarstvennoe Byudzhetnoe Uchrezhdenie Nauki Institut Khimii Tverdogo Tela I Mekhanokhimii Sibirskogo Otdeleniya Rossijskoj Akademii Nauk

METHOD OF OBTAINING COMPOSITE CATHODE MATERIAL BASED ON NAV(PO)F FOR SODIUM-ION BATTERIES Russian patent published in 2021 - IPC H01M4/58

Abstract RU 2747565 C1

FIELD: chemistry.

SUBSTANCE: invention relates to chemical technology and can be used to create sodium-ion batteries. Disclosed is a method for obtaining a highly dispersed composite cathode material based on vanadium (III) sodium fluoride-phosphate Na₃V₂ (PO₄)₂F₃ and electronically conductive additives, including the stages of preliminary mechanical activation of the starting reagents and subsequent annealing, while the formation of electronically conductive additives occurs directly during the synthesis. The presence of electronically conductive additives makes it possible to improve the power characteristics of Na₃V₂ (PO₄)₂F₃.

EFFECT: invention is aimed at obtaining, using mechanical activation, highly dispersed composite materials based on Na₃V₂(PO₄)₂F₃ with carbon and carbon-free electron-conductive additives and improving their power characteristics when used in sodium-ion batteries.

15 cl, 13 dwg, 5 ex, 1 tbl

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RU 2 747 565 C1

Authors

Kosova Nina Vasilevna

Semykina Darya Olegovna

Dates

2021-05-07—Published

2020-05-21—Filed