Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 861, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.158560
Keywords
N-doped carbon/V2O3 microfibers; Cathode materials; Zinc-ion batteries; Electrostatic spinning
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Funding
- National Natural Science Foundation of China [21968022, 51962027]
- Natural Science Foundation of Inner Mongolia [2019BS02002]
- Key Laboratory of Coal Science and Technology, Taiyuan University of Technology [MKX201903]
- Inner Mongolia University of Science and Technology Innovation Fund [2019QDL-B23]
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N-doped carbon/V2O3 microfibers synthesized via electrostatic spinning and high temperature carbonization exhibit excellent performance as a cathode material for aqueous zinc-ion batteries, showing high initial discharge capacity, excellent cycle stability, and superior rate capability.
N-doped carbon/V2O3 microfibers as a prospective cathode material of rechargeable aqueous zinc-ion batteries are synthesized via an electrostatic spinning method followed by a high temperature carbonization process. V2O3 nanoparticles with a tunnel-like 3D crystal structure are homogeneously distributed in the N-doped carbon skeleton. N-doped C skeleton takes on an amorphous form with some structural defects. These unique structural features endow N-doped C/V2O3 electrodes with an exceptional initial discharge capacity of 459.9 mAh g(-1) at 0.1 A g(-1), and the capacity retention can reach to 92.95% after 152 cycles. When the current density increases to 10 A g(-1), this N-doped C/V2O3 cathode delivers a larger discharge capacity of 322.3 mAh g(-1) with a capacity degradation of merely 0.002% per-cycle after 4000 cycles. In addition, this N-doped C/V2O3 cathode also possesses a superior rate capability. (C) 2020 Elsevier B.V. All rights reserved.
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