Water‐Lubricated Intercalation in V 2 O 5 ·nH 2 O for High‐Capacity and High‐Rate Aqueous Rechargeable Zinc Batteries
Wuhan University of Technology · University of Washington · +2 more institutions
Abstract
Abstract Low‐cost, environment‐friendly aqueous Zn batteries have great potential for large‐scale energy storage, but the intercalation of zinc ions in the cathode materials is challenging and complex. Herein, the critical role of structural H 2 O on Zn 2+ intercalation into bilayer V 2 O 5 ·nH 2 O is demonstrated. The results suggest that the H 2 O‐solvated Zn 2+ possesses largely reduced effective charge and thus reduced electrostatic interactions with the V 2 O 5 framework, effectively promoting its diffusion. Benefited from the “lubricating” effect, the aqueous Zn battery shows a specific energy of ≈144 Wh kg −1 at 0.3 A g −1 . Meanwhile, it can maintain an energy density of 90 Wh kg −1 at a high power…
Citation impact
- FWCI
- 61.38
- Percentile
- 100%
- References
- 44
Authors
14- MYMengyu Yan
Wuhan University of Technology, University of Washington, University of Washington Applied Physics Laboratory
- PHPan He
Wuhan University of Technology
- YCYing Chen
Pacific Northwest National Laboratory
- SWShanyu Wang
University of Washington, University of Washington Applied Physics Laboratory
- QWQiulong Wei
Wuhan University of Technology
Topics & keywords
- Materials science
- Aqueous solution
- Intercalation (chemistry)
- Zinc
- Inorganic chemistry
- Nuclear chemistry
- Metallurgy
- Physical chemistry
- Affordable and clean energy