A method for improving the capacity of 1.55v carbon-coated lithium titanate battery

A carbon-coated lithium titanate, battery capacity technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of loss of battery performance, reduction of battery cycle times, shortened battery life, etc., to achieve the effect of breaking the bottleneck of use

A carbon-coated lithium titanate, battery capacity technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of loss of battery performance, reduction of battery cycle times, shortened battery life, etc., to achieve the effect of breaking the bottleneck of use

CN109244387BActive Publication Date: 2021-06-11SHANDONG UNIV OF SCI & TECH
5 Cites 0 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for improving the capacity of 1.55v carbon-coated lithium titanate battery
  • A method for improving the capacity of 1.55v carbon-coated lithium titanate battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] A method for increasing the capacity of a 1.55V carbon-coated lithium titanate battery, characterized in that the preparation method is:

[0022] Step 1: Prepare raw materials

[0023] Weigh the four raw materials of lithium hydroxide, titanium oxide, terbium oxide and glucose, the molar ratio of lithium, titanium and terbium is required to meet 1.323:1.666:0.01, and the weight of glucose is 20% of the total weight of the other three raw materials

[0024] In the second step, after mixing the lithium hydroxide, titanium oxide, terbium oxide and glucose with a grinding particle size of less than 50nm in the above ratio, place it in a high-temperature furnace under an argon atmosphere, and raise the temperature to 700 at a heating rate of 12-18°C / min. -900°C, and then kept at this temperature for 5-10 hours, aft...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for improving the capacity of a 1.55V carbon-coated lithium titanate battery, which is a high-temperature furnace under an argon atmosphere after grinding and mixing a certain proportion of lithium hydroxide, titanium oxide, terbium oxide and glucose uniformly. Calcination in middle temperature for 5-10 hours, the calcination temperature is 700-900°C, after natural cooling, pulverize and sieve to obtain lithium titanate negative electrode material Li coated with C 0.99 Tb 0.01 Li 1 / 3 Ti 5 / 3 o 4 . The capacity of the 1.55V lithium titanate battery synthesized by the hydrothermal reaction of the present invention is 252mAh / g.

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 carbon-coated lithium titanate 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
11 Jun 2021
Publication
CN109244387B
IPC
H01M4/36; H01M4/485; H01M4/583; H01M10/0525
CPC
H01M4/366; H01M4/485; H01M4/583; H01M10/0525; Y02E60/10
Inventors
谷亦杰; 刘洪权