A Highly integrated flexible photo-rechargeable system based on stable ultrahigh-rate quasi-solid-state zinc-ion micro-batteries and perovskite solar cells
A Highly integrated flexible photo-rechargeable system based on stable ultrahigh-rate quasi-solid-state zinc-ion micro-batteries and perovskite solar cells
复制标题
DOI：
10.1016/j.ensm.2022.06.043
复制
发表时间：
2022-07-02
影响因子：
20.4
通讯作者：
Zhao, Yunlong
中科院分区：
文献类型：
--
作者：
Bi, Jinxin;Zhang, Jing;Zhao, Yunlong
小型化柔性光充电系统在物联网、自供电健康监测和应急电子等领域有着广阔的应用前景。然而，传统系统仍然存在制造工艺复杂、光充放电速度慢、光伏组件与储能组件在尺寸、力学和电压等方面不匹配等问题。在这里，我们展示了一种简单的喷墨打印和电沉积方法，通过将稳定和超高速率的准固态Zn-MnO2微电池（zmb）与柔性钙钛矿太阳能电池（FPSCs）相结合，来制造高度集成的柔性光充电系统。特别是，在zmb中首次引入了Ni保护层，以稳定电池结构并促进电化学性能的提高。优化后的ZMB在电流密度为400℃（5 mA cm-2）时，具有148 mWh cm-3 （16.3 mu Wh cm-2）的超高体积能量密度和55 W cm-3 （6.1 mW cm-2）的功率密度，可与传统方法制造的最先进的微型电池或超级电容器相媲美。嵌入式fpsc表现出优异的光伏性能，足以为zmb充电，并创建一个能够在小型化可穿戴电子产品中提供能源自主的自充电系统。集成系统可以在30秒内实现超快的光充电，并有足够的能量为其他功能电子设备（例如LED灯泡和压力传感器）供电数十分钟。该原型为下一代小型化柔性光充电系统提供了一个有前途的方案。
Miniaturized flexible photo-rechargeable systems show bright prospects for wide applications in internet of things, self-powered health monitoring and emergency electronics. However, conventional systems still suffer from complex manufacturing processes, slow photo-charging and discharging rate, and mismatch between photovoltaic and energy storage components in size, mechanics and voltage, etc. Here, we demonstrate a facile inkjet printing and electrodeposition approach for fabricating a highly integrated flexible photo-rechargeable system by combining stable and ultra-high-rate quasi-solid-state Zn-MnO2 micro-batteries (ZMBs) with flexible perovskite solar cells (FPSCs). In particular, Ni protective layer is first introduced into ZMBs to stabilize battery configuration and facilitate enhanced electrochemical performance. The optimized ZMB exhibits ultrahigh volumetric energy density of 148 mWh cm-3 (16.3 mu Wh cm-2) and power density of 55 W cm-3 (6.1 mW cm-2) at the current density of 400 C (5 mA cm-2), enabling them comparable with the state-of-the-art micro-batteries or supercapacitors fabricated by conventional methods. The embedded FPSCs show excellent photovoltaic performance, sufficient to charge ZMBs and create a self-charging system capable to offer energy autonomy in miniaturized wearable electronics. The integrated systems can achieve an ultrafast photo-charging within 30 s, with sufficient energy to power other functional electronics (e.g., LED bulb and pressure sensor) for tens of minutes. This prototype offers a promising scheme for next-generation miniaturized flexible photo-rechargeable systems.