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Abstract:
It is important to discover novel electrode materials and optimize the performance of existing cathode materials for aqueous zinc-ion batteries. Here, two V2O5 center dot 3H(2)O composites are achieved via a facile hydrothermal route. One is flake-like V2O5 center dot 3H(2)O built up with multiple platelets with surface defects in parallel or normal positions, and the other is V2O5 center dot 3H(2)O composite microflowers built up with multilayered microplatelets in a radial position without surface defects. Both can be used as cathode materials for aqueous zinc-ion batteries. The former showed higher discharge capacity and better rate performance. The electrode of V2O5 center dot 3H(2)O flakes exhibits stable discharge capacity at current densities of 50, 100, 250, 500, 750, 1000, 1500 and 50 mAg(-1). The capacity retention is 90.3% after 80 cycles from 237.2 mAhg(-1) to 214.1 mAhg(-1). While V2O5 center dot 3H(2)O microflowers do not exhibit stable discharge capacity at current densities of 50, 100, 250, 500, 750, 1000, 1500 and 50 mAg(-1). The capacity retention is 47.96% after 80 cycles from 223.9 mAhg(-1) to 107.4 mAhg(-1). The difference in cycling performance can be ascribed to surface defects and different compositions.
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INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
ISSN: 1452-3981
Year: 2021
Issue: 8
Volume: 16
1 . 5 4 1
JCR@2021
1 . 3 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
ESI HC Threshold:117
JCR Journal Grade:4
CAS Journal Grade:4
Cited Count:
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 5
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