Positive electrode material of lithium-ion battery and preparation method therefor
地域：
Beijing
摘要
The present disclosure relates to a positive electrode material for a lithium ion battery and its preparation. The positive electrode material in accordance with the present disclosure has an intrinsic specific surface area of 5-13 m2/g. The positive electrode material in accordance with the present disclosure has an intrinsic specific surface area and an intrinsic pore size within the required ranges. In this regard, the positive electrode material in accordance with the present disclosure has excellent particle strength, excellent Li ion transference ability, and good resistance to electrolyte erosion. When used in lithium batteries, it may impart the batteries with excellent rate performance and cycle performance. The present disclosure also relates to a method for preparing the positive electrode material.
說(shuō)明書(shū)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
In the second aspect, provided in the present disclosure is a method for preparing the above positive electrode material, comprising:
-
- subjecting a precursor of the positive electrode material to lithiating by:
- mixing the precursor with a lithium source; and
- subjecting to programmed calcining under an oxygen atmosphere, wherein the programmed calcining comprises:
- subjecting to a first calcining at 300-500° C. to obtain the first calcined product; and
- subjecting to a second calcining to obtain the second calcined product,
- wherein, in the second calcining, the calcining temperature T and the Ni content in the nickel cobalt manganese active material follow the equation: 670+(1?x)*500≤T≤780+(1?x)*500,
- wherein 0.3≤x≤0.99.
In the third aspect, provided in the present disclosure is a use of the above positive electrode material in lithium barriers.
In the fourth aspect, provided in the present disclosure is a positive electrode for a lithium battery, comprising the above positive electrode material.
In the fifth aspect, provided in the present disclosure is a lithium battery, comprising a positive electrode, a negative electrode and a separator therebetween, wherein the positive electrode comprises the above positive electrode material.
意見(jiàn)反饋
使用該功能遇到問(wèn)題
該功能需要專業(yè)版企業(yè)版VIP權(quán)限，您可以：
您也可以聯(lián)系官方QQ: 2157717237 電話: 13264338900