Abstract
In this work, a brand-new flexible electrode made of 2D-linked, ultra-thin NH4V4O10 nanosheets grown on carbon cloth (CC) and coupled with polypyrrole (PPy) was prepared and used with zinc-ion batteries (ZIBs). The application of PPy to the surface of NH4V4O10 nanosheets considerably improves the capacitance contribution and charge transfer rate, resulting in CC@NH4V4O10@PPy composites with high specific capacities and other electrochemical properties. It delivers a high specific capacity of 551.1 mAh g−1 at a current density of 0.1 A g−1 and a capacity retention of 79% over 1500 cycles at 5 A g−1. This innovative design creates a new operating method for excellent cathode materials for sophisticated ZIBs.
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