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Updated: Feb 10, 2026
11:10
Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
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Ultrafast Zn2+ Intercalation and Deintercalation in Vanadium Dioxide
Junwei Ding1, Zhiguo Du1, Linqing Gu1
1Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science and Engineering, Beihang University, 100191, Beijing, China.
Advanced Materials (Deerfield Beach, Fla.)
|May 16, 2018
Summary
Novel vanadium dioxide (VO2) (B) nanofibers enable high-performance aqueous zinc-ion batteries by facilitating ultrafast ion transport, overcoming previous limitations in cathode materials for rechargeable zinc batteries.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Rechargeable aqueous zinc-ion batteries are desirable for their eco-friendliness and affordability.
- A key challenge is the lack of cathode materials with high rate capabilities due to Zn2+ charge repulsion.
- Existing vanadium dioxide (VO2) materials face limitations from solid-state diffusion.
Purpose of the Study:
- To investigate the intercalation pseudocapacitance and ultrafast kinetics of Zn2+ in VO2 (B) nanofibers.
- To overcome the limitations of solid-state diffusion in vanadium dioxide electrodes for zinc-ion storage.
- To demonstrate the potential of VO2 (B) nanofibers as advanced cathode materials.
Main Methods:
- In situ X-ray diffraction (XRD) to analyze structural changes during ion intercalation.
- Various electrochemical measurements to assess battery performance.
- Synthesis and characterization of VO2 (B) nanofibers.
Main Results:
- Demonstrated novel intercalation pseudocapacitance and ultrafast Zn2+ kinetics in VO2 (B) nanofibers.
- VO2 (B) nanofibers possess large tunnel transport pathways (0.82 and 0.5 nm2) with minimal structural change upon Zn2+ intercalation.
- Achieved a high reversible capacity of 357 mAh g-1 and excellent rate capability (171 mAh g-1 at 300 C).
Conclusions:
- VO2 (B) nanofibers effectively eliminate solid-state diffusion limitations in vanadium dioxide electrodes.
- These nanofibers offer high energy and power densities for zinc-ion storage applications.
- The study presents a promising cathode material for high-performance aqueous zinc-ion batteries.
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