Lab Na2Fe2(SO4)3 Powder for Sodium Battery Material

Serial number

Item

Unit

Testing instrument and method

Measured value

Remark

1

Appearance

/

Visual inspection

Black Powder

2

Particle size distribution

D10

D50

D90

um

Laser particle size tester

2.95

8.02

18.2

3

Moisture

ppm

Weight loss method

1260

4

Residual alkali

NaOH

Na2CO3

Wt%

Wt%

Titration

<654

/

5

Tap density

g/cm^3

Density tester

0.72

6

Compaction density

g/cm^3

Micrometer

1.72

7

Specific surface area

m^2/g

Specific surface area meter

6.53

8

Fe

S

Na

Wt%

ICP

23.19

21.11

11.32

9

SEM

/

Scanning electron microscope

/

10

Power deduction

(2-4.5V)

0.2C

Charging/mAh/g

Discharge/mAh/g

First effect /%

91.8

86.45

94.1%