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![Mg K-edge (a) XANES spectra and (b) Fourier-transformed EXAFS spectra obtained from operando XAS measurements 0.3 M Mg[B(HFIP) 4 ] 2 /triglyme and (c) XANES spectra and (d) Fourier-transformed EXAFS spectra obtained from operando XAS measurements 0.3 M Mg[B(HFIP) 4 ] 2 /2-MeTHF.](profile/Feilure-Tuerxun/publication/279035991/figure/fig3/AS:1131641082777602@1646815667605/Mg-K-edge-a-XANES-spectra-and-b-Fourier-transformed-EXAFS-spectra-obtained-from.png)
Mg K-edge (a) XANES spectra and (b) Fourier-transformed EXAFS spectra obtained from operando XAS measurements 0.3 M Mg[B(HFIP) 4 ] 2 /triglyme and (c) XANES spectra and (d) Fourier-transformed EXAFS spectra obtained from operando XAS measurements 0.3 M Mg[B(HFIP) 4 ] 2 /2-MeTHF.
Source publication
![Figure 1. Cyclic voltammograms of (a) 0.3 M Mg[B(HFIP) 4 ] 2 /triglyme...](profile/Feilure-Tuerxun/publication/279035991/figure/fig1/AS:1131641082773516@1646815667567/Cyclic-voltammograms-of-a-03-M-MgBHFIP-4-2-triglyme-and-05-M-MgTFSA-2_Q320.jpg)
![Figure 2. (a) Peak top wavenumber of Mg[B(HFIP) 4 ] 2 /triglyme and...](profile/Feilure-Tuerxun/publication/279035991/figure/fig2/AS:1131641082777601@1646815667581/a-Peak-top-wavenumber-of-MgBHFIP-4-2-triglyme-and-MgBHFIP-4-2-2-MeTHF_Q320.jpg)
![Figure 4. DFT cluster calculations of free [B(HFIP) 4 ] − and in...](profile/Feilure-Tuerxun/publication/279035991/figure/fig4/AS:1131641082781697@1646815667626/DFT-cluster-calculations-of-free-BHFIP-4-and-in-contact-BHFIP-4_Q320.jpg)
The effects of different cathode current collectors (stainless steel, nickel, copper, and titanium) on the electrochemical performance of rechargeable magnesium batteries were investigated. Chevrel phase Mo6S8 acted as the cathode, (PhMgCl)(2)-AlCl3/tetrahydrofuran (THF) (the second generation electrolyte) as the electrolyte, and magnesium as the a...
Contexts in source publication
Context 1
... Based on these reports, we assigned the peak at 880 cm −1 to the CH 2 rocking and C−O−C stretching vibrations of the glyme molecules coordinated to magnesium ions. These results indicate that the magnesium 4 ] 2 /2-MeTHF electrolytes, and the X-ray absorption near edge structure (XANES) and Fourier-transformed extended EXAFS of each electrolyte were evaluated (Figure 3). ...
Context 2
... XANES spectra (Figure 3a,c) showed different peak intensity ratios at 0 V for the two electrolyte systems, indicating that the coordination environment of the two electrolytes was different. These results were also in agreement with the Raman spectroscopy results. ...
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Citations
3D interwoven Ti3C2 MXene networks fabricated with the assistance of bacterial celluloses (BC) are used as a cathode material for rechargeable magnesium ion battery, which delivers an impressive specific capacity (171 mA h g⁻¹ at 50 mA g⁻¹) and good cycling performance (88% capacity retention after 100 cycles). In contrast, pure Ti3C2 film only shows a reversible capacity of less than 10 mA h g⁻¹ at 50 mA g⁻¹. Compared to pure Ti3C2 film (d=1.4 nm), 3D interwoven Ti3C2 MXene networks (BC/Ti3C2 film) possess larger interlayer spacing (d=1.8 nm), benefiting the magnesium migration, which is proved through DFT calculation. BC/Ti3C2 film with porous surface is observed through FESEM image. While for Ti3C2 film, all flakes stack together. As expected, the diffusion paths for magnesium ions are optimized in the BC/Ti3C2 film. Besides, Galvanostatic Intermittent Titration Technique shows a much larger magnesium diffusion coefficient of BC/Ti3C2 film than that of pure Ti3C2 film. Therefore, the larger interlayer spacing, optimized diffusion paths and larger magnesium diffusion coefficient contribute to the high electrochemical performance. Moreover, the working mechanisms of magnesium ion battery equipped with BC/Ti3C2 film are investigated. This work provides a new insight to design MXene-based cathode materials with high-performance.
