@article{cb00294d-46cd-4b2c-a460-990329287f24,
  abstract     = {{Advancement of aqueous zinc-ion batteries (AZIBs) for practical <br>
application is limited due to the inferior performance of the existing <br>
cathode. Herein, we demonstrate rational design and synthesis of an <br>
oxygen vacancy-rich low-valent vanadium-based spinel cathode (O<sub>V</sub>-ZnV<sub>2</sub>O<sub>4</sub>) for the fabrication of high-performance AZIBs. ZnV<sub>2</sub>O<sub>4</sub><br>
 having an urchin-like morphology with nanorods ∼19 nm in diameter is <br>
synthesized carbothermally. The carbothermal reduction induces oxygen <br>
vacancies and makes ZnV<sub>2</sub>O<sub>4</sub> ideal for Zn<sup>2+</sup><br>
 storage. Theoretical studies show the enhancement of electrical <br>
conductivity and facile diffusion of charge carriers due to oxygen <br>
vacancies. The urchin-like O<sub>V</sub>-ZnV<sub>2</sub>O<sub>4</sub> delivers a high discharge capacity (599.6 mA h g<sup>−1</sup> at 100 mA g<sup>−1</sup>) and high energy density (371.8 W h kg<sup>−1</sup>). The device has a decent cycle life of over 2000 cycles at 4000 mA g<sup>−1</sup>. A series of <em>ex situ</em> characterization studies and <em>operando</em> X-ray characterization reveal that the charge storage mechanism involves the co-intercalation of Zn<sup>2+</sup>/H<sup>+</sup> onto the cathode.}},
  author       = {{Bag, Saheb and Kumar Choutipalli, Venkata Surya and Bhadra, Abhirup and Shuford, Kevin L. and Kundu, Dipan and Raj, C. Retna}},
  issn         = {{2050-7488}},
  language     = {{eng}},
  number       = {{34}},
  pages        = {{22998--23007}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{Journal of Materials Chemistry A}},
  title        = {{Carbothermal reduction-induced oxygen vacancies in spinel cathodes for high-performance aqueous zinc-ion batteries}},
  url          = {{http://dx.doi.org/10.1039/D4TA02718C}},
  doi          = {{10.1039/D4TA02718C}},
  volume       = {{12}},
  year         = {{2024}},
}