Silver Containing α-MnO2 Nanorods: Electrochemistry in Na Based ...
Supporting Information
Silver Containing α-MnO2 Nanorods: Electrochemistry in Na Based Battery Systems Jianping Huang,a Altug S. Poyraz,b Seung-Yong Lee,b Lijun Wu,b Yimei Zhu,b Amy C. Marschilok,*a,c Kenneth J. Takeuchi,*a,c and Esther S. Takeuchi*a,b,c a. Department of Chemistry, Stony Brook University, Stony Brook, NY 11794 b. Energy Sciences Directorate, Brookhaven National Laboratory, Upton NY 11973 c. Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY 11794 *corresponding authors: (ACM) [email protected], (KJT) [email protected], (EST) [email protected]
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Figure S1. Thermogravimetric analysis (TGA) profiles of L-Ag-OMS-2 (black) and H-AgOMS-2 (red) before (dashed line) and after (solid line) annealing.
Figure S2. Discharge curve of L-Ag-OMS-2 at a current density of 5 mA/g in a Na battery, inset: dQ/dV plot of L-Ag-OMS-2.
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Figure S3. Discharge curves of L-Ag-OMS-2 and H-Ag-OMS-2 cathodes discharged under low rate.
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Figure S4. Discharge curves of L-Ag-OMS-2 (black) and H-Ag-OMS-2 (red) in Li batteries under galvanostatic intermittent titration technique (GITT) mode.
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L-Ag-OMS-2 Na battery Electron 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9
Rct (ohm) 1980 ± 28 2029 ± 28 1639 ± 24 799 ± 13 594 ± 10 477 ± 8 428 ± 7 378 ± 7 367 ± 8 352 ± 8 330 ± 9 324 ± 6 314 ± 7 302 ± 6 295 ± 7 302 ± 7 311 ± 8 322 ± 8 322 ± 8
H-Ag-OMS-2 Li battery
Electron 0 0.6 1.1 1.7 2.3 2.9 3.4 4 4.6 5.2 5.7
Na battery
Rct (ohm) 44.5 ± 0.2 47.9 ± 0.2 55.3 ± 0.3 62.6 ± 0.3 73.4 ± 0.3 84.9 ± 0.5 93.5 ± 1.0 101.8 ± 1.6 94.9 ± 1.8 111.8 ± 1.6 129.3 ± 1.8
Electron 0 0.2 0.3 0.5 0.7 0.8 1 1.2 1.3
Rct (ohm) 3743 ± 59 3523 ± 66 2816 ± 50 1933 ± 42 1165 ± 38 708 ± 12 577 ± 8 559 ± 10 544 ± 18
Li battery Electron 0 0.6 1.2
Rct (ohm) 129.1 ± 1.6 135.4 ± 4.0 143.8 ± 4.8
Table S1. Charge transfer resistances of L-Ag-OMS-2 and H-Ag-OMS-2 in Na and Li batteries.
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3d5/2 4e lithiation
Intensity (a.u.)
Ag 3d
3d7/2
FWHM = 1.54
1e lithiation
FWHM = 1.51
4e sodiation FWHM = 1.66
x5 1e sodiation x3
FWHM = 1.55
Before discharge FWHM = 1.53
380
375 370 365 Binding energy (eV)
360
Figure S5. XPS Ag 3d of L-Ag-OMS-2 before and after sodiation/lithiation. Spectra intensities of 1e sodiated sample and 4e sodiated sample were magnified by 3 and 5 times, respectively. Full width at half maximum values of Ag 3d 7/2 were displayed in this figure.
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Figure S6. XRD patterns of L-Ag-OMS-2 cathode and separator before and after cycling.
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Silver Containing α-MnO2 Nanorods: Electrochemistry in Na Based Battery Systems Jianping Huang,a Altug S. Poyraz,b Seung-Yong Lee,b Lijun Wu,b Yimei Zhu,b Amy C. Marschilok,*a,c Kenneth J. Takeuchi,*a,c and Esther S. Takeuchi*a,b,c a. Department of Chemistry, Stony Brook University, Stony Brook, NY 11794 b. Energy Sciences Directorate, Brookhaven National Laboratory, Upton NY 11973 c. Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY 11794 *corresponding authors: (ACM) [email protected], (KJT) [email protected], (EST) [email protected]
S-1
Figure S1. Thermogravimetric analysis (TGA) profiles of L-Ag-OMS-2 (black) and H-AgOMS-2 (red) before (dashed line) and after (solid line) annealing.
Figure S2. Discharge curve of L-Ag-OMS-2 at a current density of 5 mA/g in a Na battery, inset: dQ/dV plot of L-Ag-OMS-2.
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Figure S3. Discharge curves of L-Ag-OMS-2 and H-Ag-OMS-2 cathodes discharged under low rate.
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Figure S4. Discharge curves of L-Ag-OMS-2 (black) and H-Ag-OMS-2 (red) in Li batteries under galvanostatic intermittent titration technique (GITT) mode.
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L-Ag-OMS-2 Na battery Electron 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9
Rct (ohm) 1980 ± 28 2029 ± 28 1639 ± 24 799 ± 13 594 ± 10 477 ± 8 428 ± 7 378 ± 7 367 ± 8 352 ± 8 330 ± 9 324 ± 6 314 ± 7 302 ± 6 295 ± 7 302 ± 7 311 ± 8 322 ± 8 322 ± 8
H-Ag-OMS-2 Li battery
Electron 0 0.6 1.1 1.7 2.3 2.9 3.4 4 4.6 5.2 5.7
Na battery
Rct (ohm) 44.5 ± 0.2 47.9 ± 0.2 55.3 ± 0.3 62.6 ± 0.3 73.4 ± 0.3 84.9 ± 0.5 93.5 ± 1.0 101.8 ± 1.6 94.9 ± 1.8 111.8 ± 1.6 129.3 ± 1.8
Electron 0 0.2 0.3 0.5 0.7 0.8 1 1.2 1.3
Rct (ohm) 3743 ± 59 3523 ± 66 2816 ± 50 1933 ± 42 1165 ± 38 708 ± 12 577 ± 8 559 ± 10 544 ± 18
Li battery Electron 0 0.6 1.2
Rct (ohm) 129.1 ± 1.6 135.4 ± 4.0 143.8 ± 4.8
Table S1. Charge transfer resistances of L-Ag-OMS-2 and H-Ag-OMS-2 in Na and Li batteries.
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3d5/2 4e lithiation
Intensity (a.u.)
Ag 3d
3d7/2
FWHM = 1.54
1e lithiation
FWHM = 1.51
4e sodiation FWHM = 1.66
x5 1e sodiation x3
FWHM = 1.55
Before discharge FWHM = 1.53
380
375 370 365 Binding energy (eV)
360
Figure S5. XPS Ag 3d of L-Ag-OMS-2 before and after sodiation/lithiation. Spectra intensities of 1e sodiated sample and 4e sodiated sample were magnified by 3 and 5 times, respectively. Full width at half maximum values of Ag 3d 7/2 were displayed in this figure.
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Figure S6. XRD patterns of L-Ag-OMS-2 cathode and separator before and after cycling.
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