期刊
NPJ 2D MATERIALS AND APPLICATIONS
卷 7, 期 1, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41699-023-00411-2
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Flexible aqueous zinc-ion batteries with a Ti3C2Tx decorated sulfur cathode and iodine-added amphiphilic gel electrolyte show high storage capacity, good cycling stability, and excellent mechanical stability. They can power various electronic gadgets and offer promising potential for flexible energy storage technologies.
Flexible aqueous zinc-ion batteries can store energy safely and at a low cost, which benefits wearable electronic gadgets; however, currently used cathodes restrict these devices with a low specific capacity and energy density. Herein, we developed a flexible zinc-sulfur (Zn-S) battery constructed by Ti3C2Tx decorated with sulfur (S@Ti3C2Tx) as a cathode and Zn metal anode with iodine-added amphiphilic gel electrolyte (AGE). Benefiting from the confinement synergy of S@Ti3C2Tx cathode, the Zn-S battery exhibited a high storage capacity of 772.7 mAh g(-1) at 300 mA g(-1), which is higher than a conventional S-decorated carbon cathode (491.7 mAh g(-1)). More specially, the flexible device offers good cycling stability (82.7%) and excellent mechanical stability with 91% capacity retention after 90 & DEG; bending (500 cycles). To demonstrate real applications, the flexible Zn-S batteries were integrated in series to power electrical gadgets (e.g., digital clock, light-emitting diode, and robot). It exhibits exceptional flexibility to sustain different deformations and maintains a steady supply of power to run the wearable electronic gadget. These findings offer a fresh starting point for flexible energy storage technologies and show the promising potential of the Zn-S battery in real-world applications.
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