A method for improving the capacity of 1.55v nano lithium titanate battery

A technology of lithium titanate and battery capacity, applied in the field of increasing the capacity of 1.55V nano-lithium titanate single battery, can solve the problems of loss of battery performance, unsafe silicon material, reduction of battery cycle times, etc. bottleneck effect
CN109216801BActive Publication Date: 2021-05-28SHANDONG 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
2021-05-28

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Abstract

The invention discloses a method for improving a nanometerized 1.55V lithium titanate battery. It is to add water and polyvinyl alcohol PVA to dissolve butyl titanate in butyl titanate, and mix lithium hydroxide and terbium nitrate Tb(NO 3 ) 3 The aqueous solution is mixed uniformly in a certain proportion and hydrothermally reacted to obtain the precursor: then the precursor is calcined to obtain the molecular formula Li 0.99 Tb 0.01 Li 1 / 3 Ti 5 / 3 o 4 lithium titanate powder. The capacity of the 1.55V battery utilizing the lithium titanate synthesized by the present invention is 253mAh / g.
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Description

technical field

[0001] The invention relates to a lithium titanate battery, and in particular provides a method for increasing the capacity of a 1.55V nanometerized 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 ba...

Claims

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