Table 1 Charge and discharge time for Co(OH)2/GNS electrode in 1 M KOH containing different concentrations of K3Fe(CN)6 mixed solution, calculated from galvanostatic charge-discharge curves at a current density of 16 Ag−1

From: Ultrahigh capacitive performance from both Co(OH)2/graphene electrode and K3Fe(CN)6 electrolyte

Concentration (M)

Charge time (s)

Discharge time (s)

0.01

28.2

29.3

0.02

29.9

37.6

0.04

51.1

83.7

0.06

60.0

171.3

0.08

52.7

285.3