Electrochemical Oscillations during Electro-oxidation of Copper Anode in Phosphoric Acid Solution

被引：9
作者：
Ding, Lifeng [1 ]
Wu, Peng [1 ]
Cheng, Jun [1 ]
Niu, Yulan [1 ]
Song, Zhengwei [1 ]
Kong, Xiangpeng [1 ]
机构：
[1] Taiyuan Inst Technol, Dept Chem & Chem Engn, Taiyuan 030008, Shanxi, Peoples R China
来源：
ELECTROCHEMISTRY | 2019年 / 87卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Copper Anode; Electro-oxidation; Electrochemical Oscillation (EO); Current Oscillation; PERIODIC CURRENT OSCILLATION; DISSOLUTION; TEMPERATURE; BEHAVIOR; CU; ELECTRODEPOSITION; LAYER; ZINC;
D O I：
10.5796/electrochemistry.18-00002
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
This paper reports the occurrence of electrochemical oscillations (EOs) in Cu electro-oxidation of phosphoric acid solution, and systematically investigated the effect of potential, electrolyte composition and concentration, temperature, stirring rate, and scanning speed on EOs. The mechanism of EOs occurred as a result of deposition and dissolution effects of CuH2PO4 through electro-oxidation of the Cu anode. The experimental result for amplitude and frequency can be explained by this simplified qualitative analysis, and further verified the previously speculated EO mechanism. This study provides insights into the relevance of micro-chemical mechanisms for the macroscopic non-equilibrium phenomenon and presents novel concepts for highly efficient electrodissolution in metallurgy. (C) The Electrochemical Society of Japan, All rights reserved.
引用
收藏
页码：14 / 19
页数：6
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