KINETICS OF BROMINE/BROMIDE ELECTRODE ON PLATINUM IN AQUEOUS SULPHURIC ACID
KINETICS OF BROMINE/BROMIDE ELECTRODE ON PLATINUM IN AQUEOUS SULPHURIC ACID
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DOI：
10.1039/tf9706601698
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发表时间：
1970-01-01
影响因子：
--
通讯作者：
PARSONS, R
中科院分区：
文献类型：
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作者：
COOPER, WD;PARSONS, R
本文用交流阻抗法研究了在硫酸水溶液中铂电极上溴/溴离子的动力学。阻抗不服从Randles电路，但在扩散阻抗两端添加吸附容量似乎给出了令人满意的等效电路。对交换电流浓度依赖性的研究表明，速率控制步骤为Br-→ Br+e。通过在电极表面上初步形成氧化物，反应被加速约2倍。
The kinetics of the bromine/bromide electrode on platinum in aqueous sulphuric acid have been studied by impedance measurements. The impedance does not obey a Randles circuit but the addition of an adsorption capacity across the diffusion impedance seems to give a satisfactory equivalent circuit. Study of the concentration dependence of the exchange current suggests that the rate-controlling step is Br–⇌ Br+e. The reaction is accelerated by a factor of about 2 by preliminary formation of oxide on the electrode surface.