Ocean solar energy is important for underwater devices. However, the intermittent irradiation and the requirements of many accompanying functional parts make the related devices huge and expensive. It is still a challenge to realize an all-in-one solar-energy conversion platform that can provide a continuous power supply, seawater sensing, and environment restoration simultaneously. Here, we demonstrate an algae-inspired strategy to achieve a multiple-function, ocean solar-energy conversion chain. Specifically, Prussian blue analogs (PBAs) of coordination polymers serve as a robust transshipment depot to connect a photon-driven oxygen-evolution part, with other components enabling the underwater system to produce electricity and oxygen for low-oxygen-zone restoration, to supply continuous day and night electricity, and to sense seawater in authentic seawater. The stability of the system is demonstrated for more than 100 day-night cycles. The concept presented here highlights the prospect of using ocean solar energy to achieve multiple tasks with an all-in-one platform.

海洋太阳能对于水下设备很重要。然而，间歇照射和许多伴随功能部件的要求使得相关设备庞大且昂贵。实现一个能够同时提供持续供电、海水传感和环境恢复的一体化太阳能转换平台仍然是一个挑战。在这里，我们展示了一种受藻类启发的策略，以实现多功能的海洋太阳能转换链。具体来说，配位聚合物的普鲁士蓝类似物 (PBA) 作为一个强大的转运库，将光子驱动的氧气释放部分与其他组件连接起来，使水下系统能够产生电力和氧气以进行低氧区恢复，以供应连续昼夜供电，并在真实的海水中感知海水。该系统的稳定性在 100 多个昼夜循环中得到证明。这里提出的概念强调了使用海洋太阳能通过多合一平台完成多项任务的前景。