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An anti-colic additive and its applicable lithium titanate battery

A lithium titanate battery and additive technology, which is applied in the manufacture of battery electrodes, secondary batteries, electrolyte batteries, etc., can solve the problems of limiting the commercial application of lithium titanate negative electrode materials, increasing battery impedance, and decreasing cycle performance, so as to suppress flatulence Phenomena, ingredients are clear, and the effect of simple preparation method

Active Publication Date: 2021-08-06
CHINA ELECTRIC POWER RES INST +3
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] After long-term observation and research, the inventor found that lithium titanate batteries will continue to be flattened during storage and recycling, resulting in increased battery impedance and rapid decline in cycle performance, which has become one of the most important obstacles to the commercial application of lithium titanate negative electrode materials.

Method used

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  • An anti-colic additive and its applicable lithium titanate battery
  • An anti-colic additive and its applicable lithium titanate battery
  • An anti-colic additive and its applicable lithium titanate battery

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Embodiment Construction

[0030] The following will be further described in detail in conjunction with specific embodiments to clearly and completely describe the technical solutions of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] An anti-flatulence additive and a suitable lithium titanate battery thereof. The battery includes a titanium-based negative electrode active material and a carbonate or long-chain ether solvent electrolyte, and the negative electrode active material is lithium titanate or a modified product of lithium titanate, titanium Titanium-based compounds such as oxides or modified products of titanium oxides or mixtures of the above materials.

[0032] The steps to test battery an...

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Abstract

The invention provides an anti-flatulence additive and its applicable lithium titanate battery. The additive is a nitrogen-containing phosphoric acid ester / phosphite derivative, and its applicable lithium titanate battery includes a titanium-based negative electrode active material and a carbonate or long Chain ether solvent electrolyte. The anti-flatulence additive provided by the invention is in good agreement with the existing lithium titanate battery, and does not need to replace the film, positive electrode material, and casing; and can effectively suppress the flatulence phenomenon of the lithium titanate battery. The anti-flatulence additive and the applicable lithium titanate battery provided by the invention have clear components, a simple preparation method, are suitable for industrial application, and have broad application prospects in the fields of power batteries and energy storage batteries.

Description

technical field [0001] The invention relates to a battery electrolyte additive, in particular to an anti-flatulence additive and a suitable lithium titanate battery. Background technique [0002] As the most potential negative electrode active material - titanium-based negative electrode materials, especially spinel lithium titanate (Li 4 Ti 5 o 12 , LTO) has received extensive attention. Compared with traditional graphite anode materials, LTO has a stable crystal structure, and its volume remains almost unchanged when lithium ions are intercalated and deintercalated. It is called a "zero strain" material and has a very high cycle life; the ion diffusion rate inside the material Fast and non-toxic raw materials, green and environmentally friendly; high lithium intercalation potential (1.55V vs. Li / Li + ), which avoids the precipitation of lithium dendrites on the surface of the negative electrode, and has good safety. Therefore, lithium-ion batteries with LTO as the neg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/485H01M10/0567H01M10/058
CPCH01M4/485H01M10/0567H01M10/058Y02E60/10Y02P70/50
Inventor 杨凯王德宇尹秀娟张明杰耿萌萌高飞刘皓
Owner CHINA ELECTRIC POWER RES INST
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