Cooperative Design of Magnesium Ions with Cations or Anions in 2D VS2 Electrodes
Yingfang Li1, Qianzhi Gou2, Yuting He1
1National Innovation Center for Industry-Education Integration of Energy Storage Technology, MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems, CQU-NUS Renewable Energy Materials & Devices Joint Laboratory, School of Energy & Power Engineering, Chongqing University, Chongqing 400044, China.
Abstract:
Two-dimensional vanadium disulfide (VS2) is widely used in electrode materials for aqueous batteries but still suffers from limited capacity and rate. We designed an interlayer reaction based on VS2 in synergy of Mg2+ with conventional cations or anions (H+, NH4+, OH-, NO3-, F-, Cl-, and SO42-) (dividing these ions' workings into dual-ion batteries, Mg2+-anion co-(de)intercalation, and gap-filling). Relatively more suitable paired ions were recommended for each of the three mechanisms. Furthermore, combined with molecular dynamic simulation and experiments, the effectiveness of Mg2+/Cl- co-(de)intercalation in enhancing battery performance was verified. This work provides a new dimension for optimizing battery performance.
More Related Videos
10:03Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
12:18Co-localizing Kelvin Probe Force Microscopy with Other Microscopies and Spectroscopies: Selected Applications in Corrosion Characterization of Alloys
Published on: June 27, 2022
Related Concept Videos
Valence Bond Theory
Formation of Complex Ions
Ionic Bonding and Electron Transfer
Ionic Crystal Structures
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Electrodeposition
Electrodeposition can...
Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
