In reply to “A query on the Mg2p of MgO”

Isahak, Wan Nor Roslam Wan; Hasan, Siti Zubaidah; Ramli, Zatil Amali Che; Ba‐Abbad, Muneer M.; Yarmo, Mohd Ambar

doi:10.1007/s11164-018-03736-6

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…The Mn 2p 1/2 and Mn 2p 3/2 peaks are located at 653.33 and 641.83 eV binding energies, respectively, which confirm the presence of the Mn 3+ oxidation state in the sample. ,, Spin–orbit splitting of 11.5 eV is reported to be a significant signature of Mn 3+ in MMO NFs Figure e shows high-resolution XPS spectra of Mg 2p revealing the existence of Mg 2+ at a binding energy of 50.87 eV. − Furthermore, O 1s high-resolution spectra display three peaks in Figure f. The peaks observed at 531.70 and 529.54 eV binding energies are attributed to the oxygen defect/vacancy sites (O V ) and lattice oxygen (O L ), respectively.…”

Section: Resultsmentioning

confidence: 67%

Designing the Binder-Free Conversion-Based Manganese Oxide Nanofibers as Highly Stable and Rate-Capable Anode for Next-Generation Li-Ion Batteries

Tandon

Rani

Sharma

2022

ACS Appl. Energy Mater.

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Recently, manganese (Mn)-based oxides have attracted more attention as a promising anode material for the next-generation lithium-ion batteries (LIBs) because of their higher experimental capacity, abundance, cost-effectiveness, and environmental-friendly nature. However, the poor rate capability and rapid capacity fading caused by the volume fluctuations during cycling hamper their usage in practical applications. To address these concerns, we report one-dimensional, high-aspect ratio MgMn2O4 (MMO) nanofibers with morphological voids/gaps as a binder-free negative electrode for LIBs. Herein, the binder-free electrodes of MMO nanofibers are fabricated via facile electrophoretic deposition technique. They can provide a well-designed network between the active materials and current collector, which enhances the electrical conductivity and Li-ion diffusion by avoiding binders as “dead mass”, which in turn helps to increase the energy density of LIBs. Furthermore, the morphological voids in between the individual nanoparticles of MMO nanofibers and the inactive MgO matrix element act as a buffering space that effectively accommodates the volume variation during lithiation and delithiation processes. The MMO nanofibers as LIB anodes exhibit a high reversible specific capacity of 776 mA h g–1 at 0.1 C after 125 cycles and good cyclic stability (609 mA h g–1 at 2 C after 600 cycles) with ∼99.3% capacity retention. Moreover, the binder-free MMO nanofiber anode also exhibits an ultrahigh rate capability (215 mA h g–1 at 9 C) that is generally difficult to attain in conversion-based materials. The excellent electrochemical performances can be ascribed to the 3D microstructure of the fabricated electrode and one-dimensional porous nanofabric morphology of MMO, which can ensure fast ion and electron transportation. Considering the excellent Li storage performance, the binder-free MMO nanofiber-based electrodes are expected to be promising anodes for next-generation LIBs.

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Section: Resultsmentioning

confidence: 67%

Designing the Binder-Free Conversion-Based Manganese Oxide Nanofibers as Highly Stable and Rate-Capable Anode for Next-Generation Li-Ion Batteries

Tandon

Rani

Sharma

2022

ACS Appl. Energy Mater.

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“…Therefore, solving this problem requires serious attention. Global warming and climate change have prompted international attempts to minimize carbon dioxide levels in the 1 3 atmosphere [1][2][3][4][5][6][7][8]. Chimneys emitted into the atmosphere from various industries include approximately 80 % nitrogen, 15 % CO 2 , 5 % oxygen, 500 ppm of sulfur dioxide, 100 ppm of carbon monoxide, and 50 ppm of methane, of which CO 2 is the most effective.…”

Section: Introductionmentioning

confidence: 99%

The effect of solid adsorbents in Triethanolamine (TEA) solution for enhanced CO2 absorption rate

2021

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This study aimed to investigate CO 2 absorption using chemical solvent of amine H 2 O-TEA-CO 2 in presence of activated carbon (AC) particles. The studied experimental range includes the temperature in range of 293-333 K, pressure in range of 3.5-9.5 bar, the concentration of solvents in range of 2.5-8.5 wt%, and amount of activated carbon in range of 0.3-0.9 kg/m 3 . The central composite design (CCD) with four parameters of temperature, pressure, amine concentration, and active carbon was applied in 5 levels. The physical solubility CO 2 in amine solutions decreases with the increasing temperature that indicates the process is exothermic. The optimal values of temperature, pressure, concentration, and active carbon are 303.0 K, 8.00 bar, 7.00 M, 0.75 g, respectively, and 25.99% for the input variables and desirability index of 0.732. The CO 2 loading, absorption capacity, and absorption percentage are obtained in the range of 0.572-1.180 mol CO2 /mol TEA , 0.208-0.506 wt%, and 12.73-32.61% in Triethanolamine (TEA) solutions in activated carbon, respectively. All dependent variables had a p value of less than 0.05, indicating that models were significant and substantial. The result showed that the addition of solid particles to chemical solvents effectively enhances CO 2 absorption.

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Defect-rich conversion-based manganese oxide nanofibers: An ultra-high rate capable anode for next-generation binder-free rechargeable batteries

Tandon

Sharma

2023

Journal of Alloys and Compounds

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In reply to “A query on the Mg2p of MgO”

Cited by 3 publications

References 5 publications

Designing the Binder-Free Conversion-Based Manganese Oxide Nanofibers as Highly Stable and Rate-Capable Anode for Next-Generation Li-Ion Batteries

Designing the Binder-Free Conversion-Based Manganese Oxide Nanofibers as Highly Stable and Rate-Capable Anode for Next-Generation Li-Ion Batteries

The effect of solid adsorbents in Triethanolamine (TEA) solution for enhanced CO2 absorption rate

Defect-rich conversion-based manganese oxide nanofibers: An ultra-high rate capable anode for next-generation binder-free rechargeable batteries

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