Oxygen vacancies enhance lithium storage performance in ultralong vanadium pentoxide nanobelt cathodes

Yanlong Yu, Jinpeng Li, Xiaoliang Wang, Bingdong Chang, Jun Wang, Mashkoor Ahmad, Hongyu Sun*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Ultralong V2O5 nanobelts have been successfully synthesized by a facile hydrothermal oxidation route. Oxygen vacancies are generated in the V2O5 nanobelts by annealing under N2 atmosphere at an elevated temperature. The microstructure and chemical composition of the pristine and annealed V2O5 nanobelts are studied by different methods. Compared to the pristine V2O5 nanobelts, the annealed V2O5 nanobelts sample possesses a higher reversible capacity of 177.8 mAhg−1 after 50 cycles at a current density of 0.3 Ag−1, corresponding to ∼0.27% capacity loss per cycle. At a higher current density of 1.2 Ag−1, the reversible capacity of annealed V2O5 electrode can reach 128.5 mAhg−1, which is two times larger than that of pristine V2O5 electrode. Ultralong flexible morphology together with oxygen vacancies in the annealed V2O5 electrode is considered to be responsible for the enhanced lithium storage properties.
Original languageEnglish
JournalJournal of Colloid and Interface Science
Volume539
Pages (from-to)118-125
ISSN0021-9797
DOIs
Publication statusPublished - 2019

Keywords

  • Cathode materials
  • Lithium ion batteries
  • Oxygen vacancy
  • Ultralong nanobelts
  • Vanadium pentoxide

Cite this

Yu, Yanlong ; Li, Jinpeng ; Wang, Xiaoliang ; Chang, Bingdong ; Wang, Jun ; Ahmad, Mashkoor ; Sun, Hongyu. / Oxygen vacancies enhance lithium storage performance in ultralong vanadium pentoxide nanobelt cathodes. In: Journal of Colloid and Interface Science. 2019 ; Vol. 539. pp. 118-125.
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title = "Oxygen vacancies enhance lithium storage performance in ultralong vanadium pentoxide nanobelt cathodes",
abstract = "Ultralong V2O5 nanobelts have been successfully synthesized by a facile hydrothermal oxidation route. Oxygen vacancies are generated in the V2O5 nanobelts by annealing under N2 atmosphere at an elevated temperature. The microstructure and chemical composition of the pristine and annealed V2O5 nanobelts are studied by different methods. Compared to the pristine V2O5 nanobelts, the annealed V2O5 nanobelts sample possesses a higher reversible capacity of 177.8 mAhg−1 after 50 cycles at a current density of 0.3 Ag−1, corresponding to ∼0.27{\%} capacity loss per cycle. At a higher current density of 1.2 Ag−1, the reversible capacity of annealed V2O5 electrode can reach 128.5 mAhg−1, which is two times larger than that of pristine V2O5 electrode. Ultralong flexible morphology together with oxygen vacancies in the annealed V2O5 electrode is considered to be responsible for the enhanced lithium storage properties.",
keywords = "Cathode materials, Lithium ion batteries, Oxygen vacancy, Ultralong nanobelts, Vanadium pentoxide",
author = "Yanlong Yu and Jinpeng Li and Xiaoliang Wang and Bingdong Chang and Jun Wang and Mashkoor Ahmad and Hongyu Sun",
year = "2019",
doi = "10.1016/j.jcis.2018.12.046",
language = "English",
volume = "539",
pages = "118--125",
journal = "Journal of Colloid and Interface Science",
issn = "0021-9797",
publisher = "Academic Press",

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Oxygen vacancies enhance lithium storage performance in ultralong vanadium pentoxide nanobelt cathodes. / Yu, Yanlong; Li, Jinpeng; Wang, Xiaoliang; Chang, Bingdong; Wang, Jun; Ahmad, Mashkoor; Sun, Hongyu.

In: Journal of Colloid and Interface Science, Vol. 539, 2019, p. 118-125.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Oxygen vacancies enhance lithium storage performance in ultralong vanadium pentoxide nanobelt cathodes

AU - Yu, Yanlong

AU - Li, Jinpeng

AU - Wang, Xiaoliang

AU - Chang, Bingdong

AU - Wang, Jun

AU - Ahmad, Mashkoor

AU - Sun, Hongyu

PY - 2019

Y1 - 2019

N2 - Ultralong V2O5 nanobelts have been successfully synthesized by a facile hydrothermal oxidation route. Oxygen vacancies are generated in the V2O5 nanobelts by annealing under N2 atmosphere at an elevated temperature. The microstructure and chemical composition of the pristine and annealed V2O5 nanobelts are studied by different methods. Compared to the pristine V2O5 nanobelts, the annealed V2O5 nanobelts sample possesses a higher reversible capacity of 177.8 mAhg−1 after 50 cycles at a current density of 0.3 Ag−1, corresponding to ∼0.27% capacity loss per cycle. At a higher current density of 1.2 Ag−1, the reversible capacity of annealed V2O5 electrode can reach 128.5 mAhg−1, which is two times larger than that of pristine V2O5 electrode. Ultralong flexible morphology together with oxygen vacancies in the annealed V2O5 electrode is considered to be responsible for the enhanced lithium storage properties.

AB - Ultralong V2O5 nanobelts have been successfully synthesized by a facile hydrothermal oxidation route. Oxygen vacancies are generated in the V2O5 nanobelts by annealing under N2 atmosphere at an elevated temperature. The microstructure and chemical composition of the pristine and annealed V2O5 nanobelts are studied by different methods. Compared to the pristine V2O5 nanobelts, the annealed V2O5 nanobelts sample possesses a higher reversible capacity of 177.8 mAhg−1 after 50 cycles at a current density of 0.3 Ag−1, corresponding to ∼0.27% capacity loss per cycle. At a higher current density of 1.2 Ag−1, the reversible capacity of annealed V2O5 electrode can reach 128.5 mAhg−1, which is two times larger than that of pristine V2O5 electrode. Ultralong flexible morphology together with oxygen vacancies in the annealed V2O5 electrode is considered to be responsible for the enhanced lithium storage properties.

KW - Cathode materials

KW - Lithium ion batteries

KW - Oxygen vacancy

KW - Ultralong nanobelts

KW - Vanadium pentoxide

U2 - 10.1016/j.jcis.2018.12.046

DO - 10.1016/j.jcis.2018.12.046

M3 - Journal article

VL - 539

SP - 118

EP - 125

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

SN - 0021-9797

ER -