Abstract
The research on aqueous energy storage system is of significance due to its high security and economic friendliness. Herein, a moss-like Ti3C2Tx@Fe/H2V3O8 is synthesized by a simple hydrothermal method, in which Ti3C2Tx layers can act as scaffold to boost electric conductivity and suppress vanadium solution, H2V3O8 nanorods can expand electrode/electrolyte contact area and prevent aggregation, while Fe doping can optimize electric band structure effectively. Due to the cooperative effect of three components and distinctive structure of material, the Ti3C2Tx@Fe/H2V3O8 shows superior NH4+ storage capacity with superior capacity of 284.4 mAh g−1 at 0.5 A g−1 and high energy density of 48.64 mAh g−1 at power density of 166.9 W g−1. In addition, the Ti3C2Tx@Fe/H2V3O8 shows high capacity of 356 mAh g−1 at 0.1 A g−1 and stable long-cycling durability with outstanding capacity retention after 2000 cycles in Zn2+ storage application. The results reveal the great potential of Ti3C2Tx@Fe/H2V3O8 in aqueous ion battery application through rational structure design and synergistic effect of each component.
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