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Can I read In‐Situ Electrochemically Activated Surface Vanadium Valence in V on EtoBox?
In‐Situ Electrochemically Activated Surface Vanadium Valence in V by Ying Liu; Yue Jiang; Zhe Hu; Jian Peng; Weihong Lai; Dianlun Wu; Shouwei Zuo; Jing Zhang; Bin Chen; Ziwen Dai; Yingguo Yang; Yang Huang; Wei Zhang; Wei Zhao; Wang Zhang; Lei Wang; Shulei Chou is a Engineering article available to read on EtoBox.
What is In‐Situ Electrochemically Activated Surface Vanadium Valence in V about?
Vanadium-based materials are fascinating potential cathodes for high energy density Zn-ion batteries (ZIBs), due to their high capacity arising from multielectron redox chemistry. Most vanadium-based materials suffer from poor rate capability, however, owing to their low conductivity and large dimension. Here, we propose the application of V 2 C MXene (V 2 CT x ), a conductive 2D nanomaterial, for achieving high energy density ZIBs with superior rate capability. Through an initial charging activation, the valence of surface vanadium in V 2 CT x cathode is raised significantly from V 2+ /V 3+ to V 4+ /V 5+ , forming a nanoscale vanadium oxide (VO x ) coating that effectively undergoes multi-electron reactions, whereas the inner V-C-V 2D multi-layers of V 2 CT x are intentionally preserved, providing abundant nanochannels with intrinsic high conductivity. Owing to the synergistic effects between the outer high-valence VO x and inner conductive V-C-V, the activated V 2 CT x presents an ultrahigh rate performance, reaching 358 mAh g -1 at 30 A g -1 , together with remarkable energy and power density (318 Wh kg -1 /22.5 kW kg -1 ). The structural advantages of activated V 2 CT x are mai
Who reads In‐Situ Electrochemically Activated Surface Vanadium Valence in V?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Ying Liu; Yue Jiang; Zhe Hu; Jian Peng; Weihong Lai; Dianlun Wu; Shouwei Zuo; Jing Zhang; Bin Chen; Ziwen Dai; Yingguo Yang; Yang Huang; Wei Zhang; Wei Zhao; Wang Zhang; Lei Wang; Shulei Chou
- Publisher
- Wiley
- Published
- 2020
- Language
- EN
- Field
- Engineering (Physical Sciences)