Electrochemical double layers (EDLs) govern the operation of batteries, fuel cells, electrochemical sensors, and electrolyzers. However, their invisible nature makes their properties and function difficult to conceptualize, creating an impediment to the broader understanding of double-layer function required for future technologies in energy storage and chemical synthesis. To render the behavior of electrochemical interfaces more intuitive, we made the rearrangement of interfacial components audible by employing the EDL as a variable element in a relaxation oscillator circuit. Connecting the circuit to a speaker generated an audible output corresponding to the change in potential resulting from EDL rearrangement. Variations in the applied voltage, electrolyte concentration and identity, as well as in the electrode material, yielded audible frequency variations that provide an intuitive understanding of EDL behavior. We expect that hearing the trends in behavior will provide a helpful and alternative method for understanding molecular movement at the electrochemical interface.

中文翻译：

---

声音的电化学合成：听到电化学双层

电化学双层 (EDL) 控制电池、燃料电池、电化学传感器和电解槽的运行。然而，它们的隐形性质使得它们的性质和功能难以概念化，从而阻碍了对未来能量存储和化学合成技术所需的双层功能的更广泛理解。为了使电化学界面的行为更加直观，我们通过使用 EDL 作为张弛振荡器电路中的可变元件，使界面组件的重新排列可以被听到。将电路连接到扬声器会产生与 EDL 重新排列导致的电势变化相对应的声音输出。施加电压、电解质浓度和特性以及电极材料的变化会产生可听频率变化，从而提供对 EDL 行为的直观理解。我们期望了解行为趋势将为理解电化学界面上的分子运动提供一种有用的替代方法。