Abstract
Aqueous zinc-ion batteries (ZIBs) with exceptional safety and cost-effective features have captured researchers' attention, but the cathode materials available still need to be further explored. Herein, a flower-like W/WO3 hybrid is developed as a cathode of ZIBs. Impressively, the W/WO3-ZIBs exhibit extraordinary rate performance (158 mA h g-1 under 0.1 A g-1) and remarkable cycling performance (96% over 1000 cycles). Additionally, an electrochemical mechanism based on reversible Zn2+ insertion/extraction in W/WO3 is firstly demonstrated, and the impressive flexibility and excellent capabilities of the soft-packaged batteries are also realized. Therefore, this research will pave a novel consideration of metal/metal oxide hybrids in designing cathodes of ZIBs with high electrochemical performance.
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