High-Efficiency Monolithic Photosupercapacitors: Smart Integration of a Perovskite Solar Cell with a Mesoporous Carbon Double-Layer Capacitor,Solar RRL

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High-Efficiency Monolithic Photosupercapacitors: Smart Integration of a Perovskite Solar Cell with a Mesoporous Carbon Double-Layer Capacitor
Solar RRL ( IF 6.0 ) Pub Date : 2021-08-25 , DOI: 10.1002/solr.202100662
Taisiia Berestok _{1,

2,

3} , Christian Diestel _{1,

2} , Niklas Ortlieb _{1,

2,

3} , Jan Buettner _{1,

2,

3} , Joel Matthews _{1,

2,

3} , Patricia S.C. Schulze _{4,

5} , Jan-Christoph Goldschmidt _{4,

5} , Stefan W. Glunz _{1,

4,

5,

6} , Anna Fischer _{1,

2,

3}

Affiliation

The integration of solar cells with supercapacitors into hybrid monolithic power packs can provide energy autonomy to smart electronic devices of the Internet of Things (IoT) by mediating between intermittent load and supply. Herein, such a photorechargeable supercapacitor (also called a photosupercapacitor) is developed via a three-electrode integration of a p–i–n halide perovskite solar cell with a gel electrolyte-type supercapacitor that uses mesoporous N-doped carbon nanospheres (MPNC) as the active electrode material. Benefiting from the large surface area, well-defined mesoporous structure, and homogeneous particle size of the MPNC material, the supercapacitor demonstrates high capacitance, resulting in large energy and power densities with a high charge/discharge efficiency. Its integration with a large-area (1 cm²) FA_0.75Cs_0.25Pb(I_0.8Br_0.2)₃ perovskite solar cell, with an optimized layer sequence to minimize degradation, results in a photosupercapacitor exhibiting fast (< 5 s) photocharging up to 1 V. The outstanding peak overall photoelectrochemical energy conversion efficiency of 11.5% is a result of a high solar cell power conversion efficiency of 12.5%, a high supercapacitor storage efficiency of 92%, and low internal energy losses due to monolithic integration. These results underline the high potential of this type of device toward application in the IoT.

中文翻译：

高效单片光超级电容器：钙钛矿太阳能电池与介孔碳双层电容器的智能集成

将太阳能电池与超级电容器集成到混合单片电源组中，可以通过在间歇性负载和电源之间进行调解，为物联网 (IoT) 的智能电子设备提供能源自主权。在本文中，这种可光充电超级电容器（也称为光超级电容器）是通过 ap-i-n 卤化物钙钛矿太阳能电池与凝胶电解质型超级电容器的三电极集成开发的，该超级电容器使用介孔 N 掺杂碳纳米球（MPNC）作为活性电极材料。受益于 MPNC 材料的大表面积、明确的介孔结构和均匀的粒径，超级电容器表现出高电容，从而产生大能量和功率密度以及高充电/放电效率。它与大面积（1 cm ²) FA _0.75 Cs _0.25 Pb(I _0.8 Br _0.2 ) ₃钙钛矿太阳能电池，具有优化的层序以最大限度地减少降解，导致光超级电容器表现出快速（< 5 s）光充电高达 1 V。出色的峰值整体光电化学能量转换11.5%的效率是12.5%的高太阳能电池功率转换效率、92%的高超级电容器存储效率以及由于单片集成导致的低内部能量损失的结果。这些结果强调了这种类型的设备在物联网中的应用的巨大潜力。

更新日期：2021-08-25

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