Electrolyte for improving high and low temperature performance of lithium batteries and application thereof
A high-low temperature, electrolyte technology, applied in the field of electrolyte, can solve the problems affecting battery charge and discharge performance, low ionic conductivity, etc., and achieve the effect of improving high and low temperature performance, cycle life and storage life.
Inactive Publication Date: 2012-05-23
ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD
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Problems solved by technology
For lithium iron phosphate batteries, the charge and discharge performance of the battery at low temperature will be affected due to the low ion conductivity of lithium iron phosphate materials.
Method used
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Embodiment Construction
[0020] The present invention is further described below with specific examples.
[0021] The present invention exemplifies 1 to 16 components of electrolyte solutions that improve the high and low temperature performance of lithium batteries in the form of tables, as well as the test data of the battery capacity percentage of each electrolyte solution, see Table 1 below for details:
[0022] Table 1. The composition of the electrolyte solution and the measurement results of the battery capacity percentage
[0023]
[0024]
[0025] The present invention still has many specific implementation modes, and all technical solutions formed by adopting equivalent replacement or equivalent transformation all fall within the protection scope of the present invention.
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The invention provides an electrolyte for improving high and low temperature performance of lithium batteries and application thereof. The electrolyte comprises four types of components: lithium salts, carbonate and / or ether organic solvents, high and low temperature additives and other functional additives, wherein the mol concentration range of the lithium salts and the high and low temperature additives in the electrolyte is 0.001-2 mol / l; and the mol concentration range of the other functional additive components is 0-0.5 mol / l. The electrolyte can be prepared into primary batteries, secondary batteries and lithium ion batteries. In the electrolyte, the high and low temperature additives are added to the lithium battery electrolyte, so that the high and low temperature performance of the electrolyte is greatly improved, and the cycle life and storage life of the lithium batteries are prolonged.
Description
technical field [0001] The invention relates to an electrolyte solution for improving the high and low temperature performance of a lithium battery and its application, belonging to the field of material technology. Background technique [0002] As the marketization of lithium-ion batteries continues to deepen, people's expectations for lithium-ion batteries are getting higher and higher. At present, commercialized lithium-ion batteries are difficult to meet the needs of practical applications, such as electric vehicles, aerospace technology, and military fields. One of the main problems that limit the application of lithium-ion batteries to these fields is that the operating temperature of lithium-ion batteries is limited. [0003] The results of the study found that, due to the structural characteristics of the lithium manganate material, the battery using the lithium manganese oxide system will appear in the process of charging and discharging. 2+ Dissolution, leading t...
Claims
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Login to View More IPC IPC(8): H01M10/0567H01M10/0568H01M10/0525
CPCY02E60/122Y02E60/10
Inventor 袁杰李立飞陈世彬徐丽娜翟德江袁翔云赵世勇郭军
Owner ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD