1.XRD图谱及其对应的结构参数(XRD patternand its corresponding structural parameters)
G330-1试样的XRD图谱(XRD pattern)
G330-1试样的结构参数(Corresponding structural parameters)
试样
|
d002(nm)
|
L002(nm)
|
L100(nm)
|
L101(nm)
|
n=L002/d002
|
g (%)
|
G330-1
|
0.33634
|
39.9
|
43.0
|
7.6
|
119
|
89.07
|
2.粒度分布(Grain size distribution)
G330-1试样的粒度分布曲线(Grain size distribution curve)
试样的粒度分布数据(Grain size distribution experimental data)
试 样
|
d10(μm)
|
d50(μm)
|
d90(μm)
|
d100(μm)
|
d10/d90
|
G330-1
|
9.6
|
18.7
|
36.0
|
47.5
|
0.27
|
德国Shunk公司Type-1
|
8
|
20
|
40
|
|
0.20
|
3.颗粒形貌(Morphology of grains)
a b
G330-1粉末试样颗粒的形貌(Morphology of G330-1 powder sample grains)(a--1400×; b--1000×)
4.恒电流充、放电性能(Galvanostatic charge and discharge performance)
G330-1试样的恒电流充、放电曲线(Galvanostatic charge and discharge curve)
G330-1试样的恒电流充、放电数据(Galvanostatic charge and discharge experimental data)
试 样
|
第一循环
|
第二循环
|
第三循环
|
C1
|
D1
|
η1
|
C2
|
D2
|
η2
|
C3
|
D3
|
η3
|
(mAh/g)
|
(mAh/g)
|
(%)
|
(mAh/g)
|
(mAh/g)
|
(%)
|
(mAh/g)
|
(mAh/g)
|
(%)
|
G330-1
|
437.7
|
315.5
|
72.08
|
338.9
|
323.4
|
95.43
|
335.2
|
324.3
|
96.75
|
5.说明(Specification)
1.石墨化度高g=89.07%,理论容量为372mAh/g×89.07%=331.3mAh/g;
2. d10/d90=0.27,大于德国Shunk公司试样(d10/d90=0.20),粒度比较均匀;
3.粉粒长径、短径相差不大,表面比较光滑,电极加工性能好;
4.导电率比较高42.27S/cm,加工成电极时不需另加导电剂(乙炔黑导电率:7.77S/cm);
5.恒电流充、放电时,第三循环的放电容量D3=324.3mAh/g,充、放电率η3=96.75%;
6.充、放电电位平台平直,用作电池的负极活性材料时电压稳定。