Poly‐1,4‐dimethoxybenzene has been synthesized by the anodic oxidation of 1,4‐dimethoxybenzene in aprotic electrolytes. The black polymer is a doped semiconductor as formed. This material is converted to polymeric (oligomeric) hydroquinone and quinone. The polymers are insoluble in all common solvents except for the polyhydroquinone in aqueous base. A coulombic titration of this quinone, using an electrode compounded with carbon and in an aprotic electrolyte, gave an equivalent weight corresponding to ∼0.5e − per quinone unit. Similar results were observed in the initial cycles in Li cells, however, the capacity of the electrode degraded on cycling.

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A variety of materials have been evaluated for use as electrodes for neural stimulation. In an effort to maximize the charge density on the electrode surface, faradaic stimulation electrodes have been investigated. Electrodes consisting of thin films of polypyrrole on Pt have been studied in phosphate buffered saline using cyclic voltammetry at 100 mV/s. The electrode capacity diminishes initially but stabilizes after ˜500 cycles. The electrodes were further evaluated in pulsing experiments using constant current, biphasic pulses. In these experiments, significant charge storage was observed only when using pulse widths greater than 5 ms. A modified polypyrrole was prepared using anthraquinone containing electrolyte. This new material is an apparent improvement over the polypyrrole previously studied.