Integrated photo-rechargeable supercapacitors formed via electrode sharing

Solar-Powered Supercapacitors Integrated with a Shared Electrode

“…The amplitude of the sinusoidal voltage was equal to 5 mV. The specific capacitances were obtained from the GCD profiles according to the following equation: where I is the current applied, Δ V /Δ t is the slope of the discharge curve after the IR drop at the beginning of the discharge curve, and V is the total area of the two electrodes. The specific power ( P , in W cm –2 ) and energy ( E , in Wh cm –2 ) were estimated using the following equation: …”

“…Solar-powered integrated supercapacitors (SPISs), also known as self-powered systems or photo-rechargeable systems, are becoming more widely applied in aerospace, smart buildings, and soft robotics. − A typical SPIS is formed by simply integrating two devices, an energy-harvesting element and an energy-storage device, using an external power connection. , In a frequently used SPIS configuration, a supercapacitor (SC) is integrated with an organic solar cell (OSC) into one unit that stores the electric energy produced by the solar power and is able to supply continuous energy under light illumination. Inverted OSCs ( i OSCs) have become leading candidates for the energy-harvesting elements in SPISs, being solution-processable and lightweight and having adequate capacity and excellent compatibility in connecting to other functional devices. − High-power SCs are the electric-storage elements in SPISs and able to effectively collect the output of solar cells under intermittent sunlight. , An integrated system with both an i OSC and an SC is called an organic solar supercapacitor (OSSC) and has potential for future SPIS designs . However, their tedious fabrication process and large size lead to energy dissipation and waste of power .…”

Recent advances in solid‐state supercapacitors: From emerging materials to advanced applications

“…The integration of energy harvesting and energy storage devices is a new and promising strategy to solve this limitation. [468][469][470][471] Photo SCs-or photo self- charging-SCs can be fabricated by integrating solar cells and SCs in which charging is done with the help of a solar cell as opposed to the direct external charging of conventional SCs (schematically represented in Figure 13). More recently, a flexible solar-charging integrated device based on the MnO 2 asymmetric SSC was fabricated by Tian et al 472 The storage module of the integrated device was assembled with nanoflower-like MnO 2 and nanowire-shaped VN as positive and negative electrodes and PAM/MgSO 4 gel polymer electrolyte.…”

“…Unfortunately, the use of solar energy is limited to the access to sunlight, restricting its practical applications. The integration of energy harvesting and energy storage devices is a new and promising strategy to solve this limitation 468‐471 . Photo SCs—or photo self‐charging—SCs can be fabricated by integrating solar cells and SCs in which charging is done with the help of a solar cell as opposed to the direct external charging of conventional SCs (schematically represented in Figure 13).…”

Hybrid Halide Perovskite‐Based Electrochemical Supercapacitors: Recent Progress and Perspective

“…Integrated solar photovoltaics with rechargeable batteries and supercapacitors have gained lot more attention in recent years. [ 41–45 ] Integration may introduce poor reproducibility as well as reliability; therefore, PRBs and supercapacitors have become alternatives for self‐charging energy storage devices. [ 46–51 ] MHPs can be potential candidates for bifunctional operation in energy harvesting and storage.…”