Table 2. Specific Capacitances of PCNiO-0, PCNiO-50, PCNiO-100, and PCNiO-150 Calculated by the GCD Test at Different Current Densities.

	specific capacitance (F/g)
current density (A/g)	PCNiO-0	PCNiO-50	PCNiO-100	PCNiO-150
1.5	375	468.7	562.5	656.2
1.75	334.3	407.8	502.4	594.8
2	258.2	346	432.1	503.4
2.25	187.5	234.3	327.6	417.5