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2 615 697

(13)

(51)

IPC

H01M4/04(2006-01-01)

H01M4/134(2010-01-01)

H01M4/1395(2010-01-01)

H01M4/52(2010-01-01)

C30B29/34(2006-01-01)

C01B33/32(2006-01-01)

B22F1/00(2006-01-01)

B22F1/02(2006-01-01)

B82B3/00(2006-01-01)

B82Y30/00(2011-01-01)

B82Y40/00(2011-01-01)

(21) (22)

Application

2015154824, 2015-12-22

(24)

Start date

2015-12-22

(22)

Actual filing date

2015-12-22

(45)

Published

2017-04-06

(72)

Inventor

Popovich Anatolij AnatolevichNovikov Pavel AleksandrovichMaksimov Maksim YurevichSilin Aleksej Olegovich

(73)

Holder

Federalnoe Gosudarstvennoe Avtonomnoe Obrazovatelnoe Uchrezhdenie Vysshego Obrazovaniya Politekhnicheskij Universitet Petra Velikogo" Vo

METHOD FOR PRODUCING CATHODE MATERIAL BASED ON SYSTEM LiFeSiO Russian patent published in 2017 - IPC H01M4/04 H01M4/134 H01M4/1395 H01M4/52 C30B29/34 C01B33/32 B22F1/00 B22F1/02 B82B3/00 B82Y30/00 B82Y40/00

Abstract RU 2615697 C1

FIELD: chemistry.

SUBSTANCE: as initial component, Aerosil (SiO₂) nanoscale powder with a surface area of 350-380 m²/g is selected and dried in vacuo for 1-3 hours. Iron oxide and lithium oxide films with a thickness of 1-3 nm are coated on aerosil powder by means of the MLT method to achieve the stoichiometric composition Li₂FeSiO₄ and the diffusion mixing of the resulting composition Li₂FeSiO₄ is carried out at 300°C to 500°C for 8-15 hours.

EFFECT: invention allows to obtain a cathode material having a high specific surface area and high specific capacity, with the uniform distribution of the chemical composition in the total powder volume and the defect-free crystal structure.

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RU 2 615 697 C1

Authors

Popovich Anatolij Anatolevich

Novikov Pavel Aleksandrovich

Maksimov Maksim Yurevich

Silin Aleksej Olegovich

Dates

2017-04-06—Published

2015-12-22—Filed