Method of producing silicon doped LiMn2O4 lithium ion battery anode material

Method of producing silicon doped LiMn2O4 lithium ion battery anode material

The invention discloses a preparation method of Si doping LiMn2O4 lithium ion battery anode material. The invention is characterized in that: take manganese salt, lithium salt, and organosilane as raw materials, and take ethanol as solvent to obtain homogeneous solution of LiMn, Si according to the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HUANG BAIYONG, GAO SHANMIN, XU PU, XU YANBIN, WANG YUBAO, KONG LINGYAN
Format: Patent
Sprache:chi ; eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
THEIR RELEVANT APPARATUS
TRANSPORTING
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Beschreibung
Zusammenfassung:The invention discloses a preparation method of Si doping LiMn2O4 lithium ion battery anode material. The invention is characterized in that: take manganese salt, lithium salt, and organosilane as raw materials, and take ethanol as solvent to obtain homogeneous solution of LiMn, Si according to the molar ratio(x is less than or equal to 0.1) of LiMn2-xSixO4, so as to prepare uniform precursor; and then prepare Si doping LiMn2O4 lithium ion battery anode material at high temperature through the method of solid-state incremental heating. The invention can settle the common problem of decreased theoretical capacity of spinel lithium manganese caused by ion doping, and the product prepared by the invention has structured crystal form, single phase, no silicon dioxide impurity and settles the difficulty of effective si- ion doping technically.