Main
characteristics:
1. High
energy density, Its theoretical specific capacity is 170 mAh/g, Actual product
specific capacity can be more than 140 mAh/g (0.2 C, 25 ° C);
2. High
security, is the safety of lithium ion battery cathode material; Do not contain
any harmful heavy metals;
3. long
life: In 100% DOD (depth of discharge) conditions, can charge and discharge
more than 2000 times; (reason: lithium iron phosphate lattice stability is
good, the lithium ions embedded and emergence of lattice impact is not big, so
it has good reversibility. The deficiencies are ionic conductivity electrode is
poor, not suitable for large current charge and discharge, stuck in
applications. Solution: in the electrode coating on the surface of conductive
material, doped modified electrode. )
The
service life of the lithium iron phosphate battery with temperature,
temperature too low or too high in the charging and discharging process and use
process produce greatly bad hidden trouble. Electric cars use especially in
northern China, in the fall and winter normal power supply of the lithium iron
phosphate batteries or power supply is too low, need to adjust its working
environment temperature to maintain its performance. At present, the domestic
solve the lithium iron phosphate battery temperature working environment should
be considered space limitations, the common solution is to use the aerogel
blanket as a thermal insulation layer.
|
Item
|
Unit
|
Test results
|
Test method
|
|
Appearance
|
N.A
|
No agglomeration
|
visual inspection
|
|
Tap density
|
g/cm3
|
1.132
|
Contador tap density tester
|
|
Resistance
|
Ω.cm
|
114.9
|
Mitsubishi electric conductivity tester
|
|
Particle size
|
D10
|
um
|
0.549
|
MASTERSIZER2000
refractive index 1.84%
absorptivity 0.1%
|
|
D50
|
um
|
1.508
|
|
D90
|
um
|
6.010
|
|
Carbon
|
%
|
1.29
|
High frequency infrared carbon sulfur
instrument
|
|
Specific surface area
|
M2/g
|
12.21
|
ST-08 SSA TESTING
|
|
PH
|
N.A
|
8.92
|
PH tester
|
|
Moisture
|
PPM
|
1043.0
|
Karl-Fisher Moisture analyzer
|
|
First discharge efficiency
|
%
|
97.5
|
Half cell
|
|
First capacity
|
mAh/g
|
155.5
|
