电极
电化学
材料科学
可视化
纳米技术
扫描电化学显微镜
电化学电池
扩散
分析化学(期刊)
化学
计算机科学
物理
物理化学
色谱法
人工智能
热力学
作者
Huaijia Xin,Hang Wang,Wei Zhang,Yu Chen,Qinghua Ji,Gong Zhang,Huijuan Liu,André D. Taylor,Jiuhui Qu
标识
DOI:10.1002/anie.202206236
摘要
Revealing the dynamic processes at the electrode-solution interface is imperative for understanding electrochemical phenomena. Most techniques have been developed to sense the electrode surface changes at the nanoscale, but provide limited information on potential-induced interfacial ion redistribution at the mesoscale. Herein, we present an in operando visualization method utilizing a microfabricated electrochemical cell combined with a laser scanning confocal microscope to observe high-resolution and fast-response interfacial processes. We report potential-induced formation and transformation of the Nernst diffusion layer, demonstrating that pulsed voltage dynamically perturbs the interface and promotes ion diffusion. This provides an additional insight into developing a dynamic manipulation method to control the electrochemical process. Our novel visualization method can easily be applied to monitor different ionic behaviors in electrochemical reactions at the mesoscale.
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