Comparison of diffusion coefficients of electroactive species in aqueous fluid electrolytes and polyacrylate gels: step generation-collection diffusion measurements and operation of electrochemical devices
Comparison of diffusion coefficients of electroactive species in aqueous fluid electrolytes and polyacrylate gels: step generation-collection diffusion measurements and operation of electrochemical devices
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水性流体电解质和聚丙烯酸酯凝胶中电活性物质的扩散系数的比较：电化学装置的步骤生成-收集扩散测量和操作
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
M. Wrighton
中科院分区：
文献类型：
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作者：
Helen B. Tatistcheff;I. Fritsch;M. Wrighton
本文报道了分子量为4×10 6的聚丙烯酸水凝胶中扩散系数的电化学测量和电化学装置的操作。在低剪切速率下，稀释的水溶液在中和后变成粘度高达5× 104 cP的凝胶。扩散率的测量使用电位阶跃产生-收集阵列上的紧密间隔的微电极
We report electrochemical measurement of diffusion coefficients and operation of electrochemical devices in aqueous polyacrylate gels formed by neutralization of poly(acrylic acid), MW=4×10 6 . Upon neutralization, dilute aqueous solutions become gels with viscosities as high as 5×10 4 cP at low shear rates. Diffusivity was measured using potential step generation-collection on arrays of closely spaced microelectrodes