Login / Signup

Coupling aqueous zinc batteries and perovskite solar cells for simultaneous energy harvest, conversion and storage.

Peng ChenTian-Tian LiYuan-Bo YangGuo-Ran LiXue-Ping Gao
Published in: Nature communications (2022)
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 Co 2 P-CoP-NiCoO 2 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.
Keyphrases
  • single cell
  • cell therapy
  • ionic liquid
  • room temperature
  • gold nanoparticles
  • reduced graphene oxide
  • ion batteries
  • drinking water
  • perovskite solar cells
  • high efficiency
  • bone marrow
  • label free