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Efficiently photo-charging lithium-ion battery by perovskite solar cell

2015; Nature Portfolio; Volume: 6; Issue: 1 Linguagem: Inglês

10.1038/ncomms9103

2041-1723

Jiantie Xu, Yonghua Chen, Liming Dai,

Advanced Battery Materials and Technologies

Abstract Electric vehicles using lithium-ion battery pack(s) for propulsion have recently attracted a great deal of interest. The large-scale practical application of battery electric vehicles may not be realized unless lithium-ion batteries with self-charging suppliers will be developed. Solar cells offer an attractive option for directly photo-charging lithium-ion batteries. Here we demonstrate the use of perovskite solar cell packs with four single CH 3 NH 3 PbI 3 based solar cells connected in series for directly photo-charging lithium-ion batteries assembled with a LiFePO 4 cathode and a Li 4 Ti 5 O 12 anode. Our device shows a high overall photo-electric conversion and storage efficiency of 7.80% and excellent cycling stability, which outperforms other reported lithium-ion batteries, lithium–air batteries, flow batteries and super-capacitors integrated with a photo-charging component. The newly developed self-chargeable units based on integrated perovskite solar cells and lithium-ion batteries hold promise for various potential applications.