Solar energy is one of the most appealing clean energies to replace fossil fuel. However, the low power output is the bottleneck that hinders the effective usage of solar energy. Herein, we propose quasi-solid-state solar rechargeable capacitors for solar energy multiplication effect and effective application based on Janus modified electrode. The power output of solar energy could be magnified by an integrated unit, which consists of the hydrogel electrolyte, asymmetrically lyophilic/lyophobic Janus joint electrode, and efficient perovskite solar cells. Benefiting from the unique Janus structure, the quasi-solid-state device is capable of achieving outstanding solar energy conversion, storage and utilization with large power output of 500 mW cm⁻², which is about 50 times higher than that of conventional solar cells.

太阳能是替代化石燃料的最吸引人的清洁能源之一。然而，低功率输出是阻碍有效利用太阳能的瓶颈。在此，我们提出了一种基于Janus修饰电极的准固态太阳能可再充电电容器，用于太阳能的倍增效果和有效的应用。太阳能的功率输出可以通过集成单元来放大，该集成单元包括水凝胶电解质，不对称亲液/疏液Janus联合电极和高效钙钛矿太阳能电池。得益于独特的Janus结构，准固态设备能够以500 mW cm ^-2的大功率输出实现出色的太阳能转换，存储和利用约为传统太阳能电池的50倍。