It is a challenge to harvest ocean wave energy by electrokinetic principle. We present here film-type generators made of carbon for wave energy harvest. The electrical signals arise from charge transportation along percolating channels driven by moving electric double-layer boundary at generator/seawater interfaces. Both voltage and current outputs are maximized by optimizing carbon dosage, wave frequency, hoisting angle and seawater temperature, producing a voltage of > 20 mV and a current of > 10 microamp from a 15 cm²-sized generator. We illustrate the electricity can be scaled up through series and parallel connections of multiple generators. Upon persistently rushing by waves, these film-type generators are stable over several hours. This approach to ocean wave energy harvest provides new opportunities for unprecedented low-investment, scalable power outputs and high stability.

通过电动原理来收集海浪能量是一个挑战。我们在这里介绍由碳制成的用于产生波能的薄膜型发电机。电信号来自沿渗流通道的电荷传输，渗流通道由在发电机/海水界面处移动的双层电边界驱动。通过优化碳剂量，波浪频率，提升角度和海水温度，可以最大程度地提高电压和电流输出，从15 cm ²产生大于20 mV的电压和大于10 µA的电流大小的发电机。我们说明了可以通过多台发电机的串联和并联连接来扩大电力规模。在持续不断地被海浪冲刷时，这些薄膜型发生器会在数小时内保持稳定。这种海浪能量收集方法为前所未有的低投资，可扩展的功率输出和高稳定性提供了新的机会。