Chen Peng, Li Tian-Tian, Yang Yuan-Bo, Li Guo-Ran, Gao Xue-Ping
Institute of New Energy Material Chemistry, School of Materials Science and Engineering, Nankai University, 300350, Tianjin, China.
Renewable Energy Conversion and Storage Center, Nankai University, 300350, Tianjin, China.
Nat Commun. 2022 Jan 10;13(1):64. doi: 10.1038/s41467-021-27791-7.
Simultaneously harvesting, converting and storing solar energy in a single device represents an ideal technological approach for the next generation of power sources. Herein, we propose a device consisting of an integrated carbon-based perovskite solar cell module capable of harvesting solar energy (and converting it into electricity) and a rechargeable aqueous zinc metal cell. The electrochemical energy storage cell utilizes heterostructural CoP-CoP-NiCoO nanometric arrays and zinc metal as the cathode and anode, respectively, and shows a capacity retention of approximately 78% after 25000 cycles at 32 A/g. In particular, the battery cathode and perovskite material of the solar cell are combined in a sandwich joint electrode unit. As a result, the device delivers a specific power of 54 kW/kg and specific energy of 366 Wh/kg at 32 A/g and 2 A/g, respectively. Moreover, benefiting from its narrow voltage range (1.40-1.90 V), the device demonstrates an efficiency of approximately 6%, which is stable for 200 photocharge and discharge cycles.
在单个设备中同时收集、转换和存储太阳能是下一代电源的理想技术途径。在此，我们提出一种由集成碳基钙钛矿太阳能电池模块（能够收集太阳能并将其转化为电能）和可充电水系锌金属电池组成的设备。该电化学储能电池分别利用异质结构的CoP-CoP-NiCoO纳米阵列和锌金属作为阴极和阳极，在32 A/g的电流密度下经过25000次循环后容量保持率约为78%。特别地，电池的阴极和太阳能电池的钙钛矿材料组合在一个三明治式连接电极单元中。结果，该设备在32 A/g和2 A/g的电流密度下分别提供54 kW/kg的比功率和366 Wh/kg的比能量。此外，得益于其较窄的电压范围（1.40 - 1.90 V），该设备展示出约6%的效率，在200次光充放电循环中保持稳定。
