The role of adding NaF to the electrolyte in constructing a stable anode/electrolyte interphase for magnesium battery applications

Farrag, Mohamed Emad; Refai, H. S.; Sheha, E.

doi:10.1007/s10008-022-05329-1

Cited by 11 publications

(8 citation statements)

References 35 publications

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“…901-3058). 19 The reduction in the intensity values of the Bragg peaks coincides with the ATR-FTIR results and confirms a decrease in the crystallinity of the electrolyte/ electrode interface. Figure 5a shows the stripping/plating curves of the Mg|Al cell using aging HFE; the cell displays a high overpotential of ∼3 V for the plating process of Mg on the surface of the Al and low overpotential in the stripping process, the data coincide well with the CV results [Figure 5(a,b)].…”

Section: ■ Results and Discussionsupporting

confidence: 76%

“…It is worth noting a slight decrease in the value of the absorption edge from E g ∼ 3.57 eV for fresh to E g ∼ 3.49 eV for aging HFE. The high value of E g reflects the dynamic structure of HFE and confirms the non-nucleophilic nature . The extinction coefficient K = α λ 4 π is an optical property reflecting how the HFE species absorbs or reflects the electromagnetic radiation at a particular wavelength.…”

Section: Results and Discussionmentioning

confidence: 83%

“…The high value of E g reflects the dynamic structure of HFE and confirms the non-nucleophilic nature. 19 The extinction coefficient K 4 = is an optical property reflecting how the HFE species absorbs or reflects the electromagnetic radiation at a particular wavelength. Figure 2e displays the k versus the wavelength (λ) of fresh and aging HFE, and the value of k shows a significant decrease with increasing the wavelength in the UV period (200−340 nm) and is followed by a little increase with further increasing the wavelength.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Life Aging Effect as a Conditioning Process that Regulates the Performance of the Halogen-Free Mg Electrolyte

Sheha,

Fan,

Farrag

et al. 2023

Langmuir

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Section: ■ Results and Discussionsupporting

confidence: 76%

Section: Results and Discussionmentioning

confidence: 83%

Section: ■ Results and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Life Aging Effect as a Conditioning Process that Regulates the Performance of the Halogen-Free Mg Electrolyte

Sheha,

Fan,

Farrag

et al. 2023

Langmuir

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“…The values of D Mg 2+ are on the order of ~ 10 -13 cm 2 s −1 which is promising compared with the typical Mo 6 S 8 (~ 10 −12 ) Mg storage cathode. 34 Figure 5d shows the first cycle of the galvanostatic discharge/charge curves of the Mg/L 1 /S cell with current density = 0.02 mA g −1 at RT and 55°C. The cell delivers an initial discharge/charge capacity of 208/40 mA h g −1 at RT and 1200/500 mA h g −1 at 55°C.…”

Section: Resultsmentioning

confidence: 99%

“…R SEI and R ct increase after introducing the artificial interphase and raising the temperature, so it can be speculated that the artificial interphase changed the electronic structure at the surface of the Mg anode while the temperature initiated the side reaction and decomposition of electrolytes. 34 Generally, the values of D Mg 2+ of Mg/L 1 /S and Mg@HFE-NaF/L 1 /S show promising kinetics in the magnetization/ demagnetization processes. Figure 6d shows the discharge/ charge curves of Mg @HFE-NaF /L 1 /S cell at RT and 55°C.…”

Section: Table II Electrochemical Impedance Parameters and Diffusion ...mentioning

confidence: 86%

Probing the Functionality of Halogen-Free Electrolytes Using Succinonitrile Additive in Magnesium-Sulfur Batteries

Gamal

Sheha

Kholy

2023

J. Electron. Mater.

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Rechargeable magnesium batteries have attractive features as a post-lithium battery owing to their high volumetric capacity, safety, and low cost. However, the high charge density of Mg2+ causes sluggish interfacial charge transfer kinetics at the electrode/electrolyte interface. This paper is an attempt to optimize the electrochemical performance of a halogen-free liquid electrolyte (HFE)-based magnesium nitrate (Mg(NO3)2) and variable additive of succinonitrile (SN). A polymer layer interface (PLI) consisting of Mg (CF3SO3)2, polyvinylidene fluoride (PVDF), SN, and G4 has been introduced to isolate the Mg anode's surface from HFE in order to reduce the growth rate of the passivation layer at the surface of the Mg anode. The introduction of SN regulates the ionic conductivity, overpotential of Mg plating/stripping, and the ion transference number of the HFE. A prototype of the Mg/HFE_SN/S full cell delivers a high initial discharge/charge capacity of ~ 1200/500 mAh g−1 with a rapid capacity fade, while (Mg/PLI/HFE_SN/S) cell offers low capacity with long cycle life over (Mg/HFE_SN/S) counterpart. Postmortem analysis of sulfur electrodes at different electrochemical states reveals the reversible back and forth movement of Mg2+ ions in Mg/S cells via conversion reaction.

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Challenges and Progress in Rechargeable Magnesium‐Ion Batteries: Materials, Interfaces, and Devices

Wang,

Zhang,

Hao

et al. 2024

Adv Funct Materials

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Rechargeable magnesium‐ion batteries (RMBs) have garnered increasing research interest in the field of post‐lithium‐ion battery technologies owing to their potential for high energy density, enhanced safety, cost‐effectiveness, and material resourcefulness. Despite substantial advancements in RMB research, a number of intrinsic challenges remain unresolved, such as the strong Coulombic interaction between Mg2+ and the host crystal structure of cathode materials, sluggish Mg2+ diffusion kinetic, poor electrolyte compatibility, and the formation of passivation films on the Mg anode interface. These issues hinder the commercial applications of RMBs. This review provides a comprehensive overview of the progress in key areas of RMB research, including representative magnesium‐ion storage cathode/anode materials and magnesium‐ion conducting electrolytes. Additionally, recent developments in electrode‐electrolyte interface regulations and pouch‐cell fabrication are outlined, highlighting current challenges and the implementation of effective solutions. Finally, future research directions are proposed to guide the development of high‐performance RMBs with practical applications.

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The role of adding NaF to the electrolyte in constructing a stable anode/electrolyte interphase for magnesium battery applications

Cited by 11 publications

References 35 publications

Life Aging Effect as a Conditioning Process that Regulates the Performance of the Halogen-Free Mg Electrolyte

Life Aging Effect as a Conditioning Process that Regulates the Performance of the Halogen-Free Mg Electrolyte

Probing the Functionality of Halogen-Free Electrolytes Using Succinonitrile Additive in Magnesium-Sulfur Batteries

Challenges and Progress in Rechargeable Magnesium‐Ion Batteries: Materials, Interfaces, and Devices

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