Table 2:
Test parameters of the experiment.
Voltage (V)
Electrode spacing (cm)
Potential gradient (V/cm)
Concentration of CaCl
2
(mol/L)
Total amount of solution (mL)
Charging time (h)
T 1
20
20
1
2
80
20
T 2
20
20
1
2
80
30
T 3
20
20
1
2
80
40