工业恒流电解过程中的氧化锰催化电化学振荡研究
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- 英文论文题名：Mn-oxide Catalyzed Electrochemical Oscillation during Industrial Constant-Current Electrolytic Process
- 论文作者：柏慧 ; 杨殿鹏 ; 范兴 ; 陶长元
- 英文论文作者：Hui Bai ; Dianpeng Yang ; Changyuan Tao ; Xin Fan ; College of Chemistry and Chemical Engineering ; Chongqing University
- 年：2016
- 作者机构：重庆大学化学化工学院;
- 论文关键词：电化学振荡 ; 电解锰 ; 非线性动力学
- 英文论文关键词：electrochemical oscillation ; electrolytic manganese ; nonlinear dynamics
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十二分会： 多孔功能材料
- 语种：中文
- 分类号：O646
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十二分会 ; 多孔功能材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：230k
- 原文格式：D
- 会议级别：全国
摘要
电化学振荡是在一定电解条件下出现电势或电流周期性波动现象。我们前期研究发现,在工业电解锰过程由于氧化锰催化水分解导致的正反馈行为,会导致在恒压电解过程中出现显著的周期性电流波动,并对电解效率产生深刻影响。相对而言,恒流电解更加接近实际的工业电解过程,与恒压电解过程中电化学动力学参数恒定不同。在恒流电解过程中,电解反应的动力学参数会随电势波动而变化,从而导致不同的动力学行为。研究考察了工业恒流电解条件下的电化学振荡行为,解析了其与反应条件及电极纳米结构之间的关系。结果表明,恒流电解条件的电势振荡有利于降低电解能耗,并且电势振荡部分能耗占整体电解能耗的11.57%,通过反应条件及电极结构可以有效调控振荡特征。通过机理分析,研究提出了非线性动力学微分方程组,探讨了方程组解的不稳定性与振荡行为的理论关联,并模拟出与实验结果一致的电流振荡曲线。本研究有望为开发高效的电解方式提供新的研究思路。
Electrochemical oscillation is cyclical fluctuations of voltage or current during electrolytic processes.Our previous study found that positive feedback as a result of the manganese oxide catalytic electrolysis,leading to significant periodic current fluctuation during pontentioststic.Relatively galvanostatic electrolysis causes differently significant dynamic behaviors.The study were analyzed the oscillations of electrochemical under truly potentiostatic conditions.The results show that the potential oscillations is conducive to reduce energy consumption of the electrolysis,energy consumption of potential oscillations accounted for 11.57%of overall electrolytic energy consumption.In this paper,we report the differential equations of nonlinear dynamic by mechanism analysis,and discusses the instability of equations associated with the theoretical behavior,successfully simulate the consistent with the experimental results of current oscillations curve.This study is expected to provide a new research idea for developing efficient electrolytic methods.
Electrochemical oscillation is cyclical fluctuations of voltage or current during electrolytic processes.Our previous study found that positive feedback as a result of the manganese oxide catalytic electrolysis,leading to significant periodic current fluctuation during pontentioststic.Relatively galvanostatic electrolysis causes differently significant dynamic behaviors.The study were analyzed the oscillations of electrochemical under truly potentiostatic conditions.The results show that the potential oscillations is conducive to reduce energy consumption of the electrolysis,energy consumption of potential oscillations accounted for 11.57%of overall electrolytic energy consumption.In this paper,we report the differential equations of nonlinear dynamic by mechanism analysis,and discusses the instability of equations associated with the theoretical behavior,successfully simulate the consistent with the experimental results of current oscillations curve.This study is expected to provide a new research idea for developing efficient electrolytic methods.
引文
[1]Fan,X.;Hou,J.;Sun,D.;Xi,S.et al.Electrochim.Acta.2013,102:466.
[2]Ding,L.;Yang,Y.;Liao,L.;Du,J.et al.J.Electrochem.Soc.2016,163:70.
[3]Fan,X.;Yang,D.;Ding,L.;Du,J.et al.ChemP hysC hem.2015,16:176.
[2]Ding,L.;Yang,Y.;Liao,L.;Du,J.et al.J.Electrochem.Soc.2016,163:70.
[3]Fan,X.;Yang,D.;Ding,L.;Du,J.et al.ChemP hysC hem.2015,16:176.
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