掺杂电活性离子聚吡咯膜内的电荷传输

用循环伏安法和计时库仑法研究了掺杂亚铁氰化钾离子的聚哟咯膜内的电荷传输问题。实验结果表明，聚吡咯膜内的电荷传递可以处理成电子在膜内的扩散模型，电荷传递速度可以 用电子表观扩散系数（Ｄａｐｐ）来表征。Ｄａｐｐ的大小由聚合物膜的结构、电活怀离子之间的过及对离了在膜中的运动决定。

Study on Charge Transport in Polypyrrole Film Doped With Electroactive Ions

Cyclic voltammetry and chronocoulometry were used to study the charge transport in polypyrrole film doped with electroactive ions. The experimental results indicated that charge transport in the film could be treated as the diffusion of electron within the film and the rate of charge transport could be estimated by apparent electron diffusion coefficient Dapp. The value of Dapp was determined by the structure of film, electron hopping between the elec- troactive centers and the movement of counter ions into and out of film.