AI Article Synopsis
- A new bifunctional photocatalyst using siloxene nanosheets has been developed to enhance the performance of photo-assisted Li-O batteries, offering significant improvements in energy efficiency.
- The introduction of this photocatalyst allows for an ultra-low charge potential of 1.90 V and a high discharge of 3.51 V, achieving a round-trip efficiency of 185%.
- The batteries also demonstrate a high cycled life with 92% efficiency retention after 100 cycles and a reversible capacity of 1170 mAh/g, highlighting their potential for efficient solar energy utilization.
Article Abstract
Developing new optimized bifunctional photocatalyst is of great significant for achieving the high-performance photo-assisted Li-O batteries. Herein, a novel bifunctional photo-assisted Li-O system is constructed by using siloxene nanosheets with ultra-large size and few-layers due to its superior light harvesting, semiconductor characteristic, and low recombination rate. An ultra-low charge potential of 1.90 V and ultra-high discharge of 3.51 V have been obtained due to the introduction of this bifunctional photocatalyst into Li-O batteries, and these results have realized the round-trip efficiency up to 185 %. In addition, this photo-assisted Li-O batteries exhibits a high rate (129 % round-trip efficiency at 1 mA cm ), a prolonged cycling life with 92 % efficiency retention after 100 cycles, and the highly reversible capacity of 1170 mAh g at 0.75 mA cm . This work will open the vigorous opportunity for high-efficiency utilization of solar energy into electric system.
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| http://dx.doi.org/10.1002/anie.202101991 | DOI Listing |
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