A system (114, 112, 100) for nerve block of a patient configured for utilizing at least one implantable capacitive rechargeable electrode, comprising: a current generator; said at least one implantable capacitive rechargeable electrode comprising an ionic component (102, 106) and one electrode; whereby said electrode comprises a high charge density material configured to be spaced apart from a nerve interface by said ionic component, the at least one implantable electrode configured to be, and in electrical communication with the current generator; and characterized by a controller configured to signal the current generator to: generate a first current through the at least one implantable electrode and said ionic component when the electrode and said ionic component are implanted within the patient, said current comprising a smoothed trapezoidal waveform that ramps to a target anodic magnitude, said first current being sufficient to at least partially block conduction in said nerve, wherein an amount of stored charge in the at least one electrode decreases generate a second current through the at least one implantable electrode and said ionic component when the electrode and said ionic component are implanted within the patient, said current comprising a smoothed trapezoidal waveform that ramps to a target cathodic magnitude, said second current being sufficient to increase the amount of stored charge of the at least one implantable electrode whereby the transitions between said ramp regions and plateaus of the smoothed trapezoidal waveforms comprise a smooth function with a continuous derivative. a current generator; said at least one implantable capacitive rechargeable electrode comprising an ionic component (102, 106) and one electrode; whereby said electrode comprises a high charge density material configured to be spaced apart from a nerve interface by said ionic component, the at least one implantable electrode configured to be, and in electrical communication with the current generator; and characterized by a controller configured to signal the current generator to: generate a first current through the at least one implantable electrode and said ionic component when the electrode and said ionic component are implanted within the patient, said current comprising a smoothed trapezoidal waveform that ramps to a target anodic magnitude, said first current being sufficient to at least partially block conduction in said nerve, wherein an amount of stored charge in the at least one electrode decreases generate a second current through the at least one implantable electrode and said ionic component when the electrode and said ionic component are implanted within the patient, said current comprising a smoothed trapezoidal waveform that ramps to a target cathodic magnitude, said second current being sufficient to increase the amount of stored charge of the at least one implantable electrode whereby the transitions between said ramp regions and plateaus of the smoothed trapezoidal waveforms comprise a smooth function with a continuous derivative. generate a first current through the at least one implantable electrode and said ionic component when the electrode and said ionic component are implanted within the patient, said current comprising a smoothed trapezoidal waveform that ramps to a target anodic magnitude, said first current being sufficient to at least partially block conduction in said nerve, wherein an amount of stored charge in the at least one electrode decreases generate a second current through the at least one implantable electrode and said ionic component when the electrode and said ionic component are implanted within the patient, said current comprising a smoothed trapezoidal waveform that ramps to a target cathodic magnitude, said second current being sufficient to increase the amount of stored charge of the at least one implantable electrode whereby the transitions between said ramp regions and plateaus of the smoothed trapezoidal waveforms comprise a smooth function with a continuous derivative.