Modified layered oxide sodium-ion battery positive electrode material as well as preparation method and application thereof

Modified layered oxide sodium-ion battery positive electrode material as well as preparation method and application thereof

The invention discloses a modified layered oxide sodium-ion battery positive electrode material as well as a preparation method and application thereof, and belongs to the technical field of sodium-ion battery positive electrode materials. Transition metal oxalate and a coating agent are dispersed i...

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Hauptverfasser: ZHANG LEJIAN, WEN CHENXU, ZHONG YUXUE, GUO QINRUI, ZHANG DASHAN, TIAN JIN, LIU HAIQIANG
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Sprache:chi ; eng
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BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator ZHANG LEJIAN
WEN CHENXU
ZHONG YUXUE
GUO QINRUI
ZHANG DASHAN
TIAN JIN
LIU HAIQIANG
description The invention discloses a modified layered oxide sodium-ion battery positive electrode material as well as a preparation method and application thereof, and belongs to the technical field of sodium-ion battery positive electrode materials. Transition metal oxalate and a coating agent are dispersed in an alcohol solvent, the transition metal oxalate with the uniformly and firmly coated surface is obtained after a hydrothermal reaction, the transition metal oxalate is mixed with a sodium source and then placed in an air atmosphere to be pre-sintered, the transition metal oxalate is decomposed at high temperature to generate gas, and therefore a porous structure is generated in situ; and then obtaining the modified layered oxide sodium-ion battery positive electrode material by adopting a high-temperature solid-phase method. The porous structure can increase the number of active sites of sodium ions on the surface and improve the diffusivity of the sodium ions. The coating layer can isolate the contact between a
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subjects BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title Modified layered oxide sodium-ion battery positive electrode material as well as preparation method and application thereof
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