Microwave process of synthesizing lithium dioxalate borate

A technology of bis-oxalate lithium borate and microwave method, applied in the field of lithium borate, can solve the problems such as LiBOB that have not been seen, and achieve the effects of short synthesis time, less impurities and high yield
CN101020690AInactive Publication Date: 2007-08-22SHANDONG HIRONG POWER SUPPLY MATERIAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG HIRONG POWER SUPPLY MATERIAL
Publication Date
2007-08-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention is microwave process of synthesizing LiB(C2O4)2 material, and belongs to the field of lithium borate material technology. The process includes mixing oxalic acid and LiOH.H2O in ratio of (2.5-1.8) to 1 or oxalic acid and Li2CO3 in ratio of (4.1-3.8) to 1 mechanically in a stirrer of 12000 rpm; adding H3BO3 in the ratio to LiOH.H2O of (0.8-1) to 1 and the ratio to Li2CO3 of (1.9-2) to 1 before further stirring for 1-10 min; and setting mixture into beaker and setting the beaker in a microwave oven of 2.45 GHz frequency and 700 W maximum power for two stage synthesis of power of 100-400 W and 200-600 W separately. Compared with common solid phase synthesis process, the present invention has the advantages of fast heating, short synthesis process, low power consumption, and high product yield and purity.
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Description

technical field

[0001] The invention belongs to the technical field of lithium borate, and in particular provides a method for synthesizing bisoxalatolithium borate LiB(C 2 o 4 ) 2 method, applied to lithium-ion battery electrolyte salts. Background technique

[0002] As a new type of power supply, lithium-ion batteries have been widely valued since they were proposed and commercialized in the 1990s. They have high specific energy, no memory effect, no pollution, small self-discharge, high working voltage, and long cycle life. Long and other advantages. As an important part of lithium-ion batteries, the electrolyte solution has a crucial influence on the performance of lithium-ion batteries. LiPF is currently the most commercially used 6 . Although containing LiPF 6 Salt electrolytes have high electrical conductivity and electrochemical stability window, but poor thermal stability. In organic solvents, LiPF 6 The following balance exists:

[0003] LiPF 6 (sol.) = ...

Claims

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