A hydrothermal reaction method to improve the capacity of 1.55v lithium titanate battery

A lithium titanate battery, hydrothermal reaction technology, applied in the direction of titanate, battery electrodes, secondary batteries, etc., can solve the problems of loss of battery performance, cure the symptoms but not the root cause, and reduce the number of battery cycles, so as to break the bottleneck of use Effect
CN109264773BActive Publication Date: 2020-11-24SHANDONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV OF SCI & TECH
Publication Date
2020-11-24

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Abstract

The invention discloses a hydrothermal reaction method for increasing the capacity of a 1.55V lithium titanate battery, which comprises lithium hydroxide LiOH and thulium nitrate Tm(NO) 3 aqueous solution, and butyl titanate C 16 h 36 o 4 The organic solution of Ti is mixed according to the proportion and then hydrothermally reacted to obtain the precursor: then the precursor is calcined to obtain the molecular formula Li 0.99 T m 0.01 Li 1 / 3 Ti 5 / 3 o 4 lithium titanate powder. In the present invention, thulium nitrate is added to butyl titanate and lithium hydroxide, and by designing the ratio of the three raw materials, the capacity of the lithium titanate 1.55V battery synthesized by hydrothermal reaction is 250mAh / g.
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Description

technical field

[0001] The invention relates to a lithium titanate battery, and in particular provides a hydrothermal method for increasing the capacity of a lithium titanate single battery. Background technique

[0002] In the 1990s, lithium titanate Li 4 Ti 5 o 12 Appearing as the anode material of a new type of lithium battery, it has been valued due to its high safety, high stability, long life and green environmental protection. As far as the currently used lithium titanate battery is concerned, lithium titanate is used as the negative electrode material instead of graphite, and it can be combined with lithium manganate, ternary materials or lithium iron phosphate and other positive electrode materials to form a 2.4V or 1.9V lithium ion secondary battery. Lithium titanate battery has obvious advantages, but its shortcomings are also obvious, such as relatively low energy density and weak battery life, which is largely determined by the voltage of the single battery. ...

Claims

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