Aqueous
zinc-ion batteries (AZIBs) are promising candidates for
practical energy storage due to their superior energy density, nontoxicity,
and environmental friendliness. However, it is still a tremendous
quest to seek an outstanding cathode material to reach a splendid
rate property as well as stable long-term cycle property. Herein,
we present a self-template method to synthesize NH4V4O10 with a decussate structure and the intercalation
mechanism via a simple one-step hydrothermal method, which delivers
a prominent mass energy density of 332.25 W h kg–1, excellent rate performance, and a stable long-time cycle. Attributing
to its specific decussate morphology consisting of vast vertical nanobelts
and the intercalation of NH4
+ with hydrogen
bonding between ammonium ions and vanadium oxide layers as a “pillar”
in the V2O5 host, the NH4V4O10 electrode material can effectively prevent structural
collapse as well as promote the rate of electronic diffusion in the
de(intercalation) process of Zn2+. Importantly, the materials
not only deliver 243 and 221.4 mA h g–1 (98.7 and
90% retention of initial discharge capacity of 246 mA h g–1, respectively) in 1480 cycles and 2100 cycles, respectively, at
5 A g–1 but also maintain a specific capacity of
417.35 mA h g–1 at 0.1 A g–1 in
the 150th cycle, which delivers a superior property compared with
the previously reported metal-intercalated V2O5. Therefore, this work provides the direction to choose and design
a novel cathode material with a peculiar morphology and admirable
performance for AZIBs and other secondary batteries.
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