arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.03057physics.chem-phcond-mat.mtrl-sci
收藏

利用电子转移反应调控电化学界面的稳定性

Tuning the stability of Electrochemical Interfaces by Electron Transfer reactions

Dimitrios Fraggedakis, Martin Z. Bazant

摘要:

已知界面的形态对能量相关应用(例如光捕获或离子嵌入)的效率起基础作用。然而,根据需要改变形态是一项非常困难的任务。在这里,我们展示了界面的形态可以通过驱动电子转移反应来调节。通过使用非平衡热力学稳定性理论,我们揭示了操作条件,改变界面形态。我们将该理论应用于离子嵌入和表面生长,其中电化学反应使用Butler-Volmer或耦合的离子-电子转移动力学来描述。后者将微观/量子力学概念与电化学界面的形态学联系起来。最后,我们构建非平衡相图中所施加的驱动力(电流/电压),并讨论了工程的电子供体的状态密度在能量收集和存储,电催化和电催化的应用程序中的重要性。

英文摘要:

The morphology of interfaces is known to play fundamental role on the efficiency of energy-related applications, such light harvesting or ion intercalation. Altering the morphology on demand, however, is a very difficult task. Here, we show ways the morphology of interfaces can be tuned by driven electron transfer reactions. By using non-equilibrium thermodynamic stability theory, we uncover the operating conditions that alter the interfacial morphology. We apply the theory to ion intercalation and surface growth where electrochemical reactions are described using Butler-Volmer or coupled ion-electron transfer kinetics. The latter connects microscopic/quantum mechanical concepts with the morphology of electrochemical interfaces. Finally, we construct non-equilibrium phase diagrams in terms of the applied driving force (current/voltage) and discuss the importance of engineering the density of states of the electron donor in applications related to energy harvesting and storage, electrocatalysis and photocatalysis.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑