Intercalation behaviour of magnesium into natural graphite using organic electrolyte systems

God, Colin; Bitschnau, Brigitte; Kapper, Katja; Lenardt, Christian; Schmuck, Martin; Mautner, Franz-Andreas; Koller, Stefan

doi:10.1039/c6ra28300d

Cited by 31 publications

(30 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, post mortem XRD proved the intercalation to be in the graphite current collector rather than the MXene ( Figure S5b), where the voltage profile and graphite peak change resemble recent reports on co-intercalation of Mg 2+ with DME/DMF in graphite. 49,50 In summary, unsolvated Mg 2+ intercalation in pristine Ti3C2Tx MXene was not observed, independent of elevated temperatures and electrolytes.…”

Section: Electrochemical Performance and Post Mortem Analysismentioning

confidence: 81%

Are MXenes suitable as cathode materials for rechargeable Mg batteries?

Kaland

Hadler‐Jacobsen

Fagerli

et al. 2020

Sustainable Energy Fuels

View full text Add to dashboard Cite

show abstract

Section: Electrochemical Performance and Post Mortem Analysismentioning

confidence: 81%

Are MXenes suitable as cathode materials for rechargeable Mg batteries?

Kaland

Hadler‐Jacobsen

Fagerli

et al. 2020

Sustainable Energy Fuels

View full text Add to dashboard Cite

show abstract

“…Recently, God et al claimed that a new electrolyte system may enable Mg co-intercalation into graphite (God et al, 2017). Figure 6B shows that a graphite cell with 0.5 M magnesium bis(trifluoromethanesulfonimide) (Mg(TFSI) 2 ) in dimethylformamide (DMF) as the electrolyte reversibly delivers a capacity of ≈35 mAh g −1 at the first cycle and that this capacity is sustained for 100 cycles with a coulombic efficiency of ≈98%.…”

Section: Multi-valent Cation Co-intercalationmentioning

confidence: 99%

Solvated Ion Intercalation in Graphite: Sodium and Beyond

Park

Kang

2020

Front. Chem.

View full text Add to dashboard Cite

Reversible intercalation of guest ions in graphite is the key feature utilized in modern battery technology. In particular, the capability of Li-ion insertion into graphite enabled the successful launch of commercial Li-ion batteries 30 years ago. On the road to explore graphite as a universal anode for post Li-ion batteries, the conventional intercalation chemistry is being revisited, and recent findings indicate that an alternative intercalation chemistry involving the insertion of solvated ions, designated as co-intercalation, could overcome some of the obstacles presented by the conventional intercalation of graphite. As an example, the intercalation of Na ions into graphite for Na-ion batteries has been perceived as being thermodynamically impossible; however, recent work has revealed that a large amount of Na ions can be reversibly inserted in graphite through solvated-Na-ion co-intercalation reactions. More recently, it has been extensively demonstrated that with appropriate electrolyte selection, not only Na ions but also other ions such as Li, K, Mg, and Ca ions can be co-intercalated into a graphite electrode, resulting in high capacities and power capabilities. The co-intercalation reaction shares a lot in common with the conventional intercalation chemistry but also differs in many respects, which has attracted tremendous research efforts in terms of both fundamentals and practical applications. Herein, we aim to review the progress made in understanding the solvated-ion intercalation mechanisms in graphite and to comprehensively summarize the state-of-the-art achievements by surveying the correlations among the guest ions, co-intercalation conditions, and electrochemical performance of batteries. In addition, the advantages and challenges related to the practical application of graphite undergoing co-intercalation reactions are presented.

show abstract

“…The heat of carbide particle formation is significantly higher than that of the carbon Mn system, this requires more intensive heat removal from the surface at condensation and occurs mainly in the He atmosphere. Moreover, the presence of modified graphite in the He atmosphere, probably related to the intercalation of Mn between the graphite layers, 88 can be also associated with low thermal relaxation time during the deposition of materials on a condensing particle. Under the TGA conditions, oxidation of modified graphite is more intense (probably, due to the catalytic effect).…”

Section: Resultsmentioning

confidence: 99%

Supercapacitor behavior of carbon‐manganese oxides nanocomposites synthesized by carbon arc

et al. 2020

View full text Add to dashboard Cite

The Mn-CO composites were synthesized by the electric-arc discharge method. The composite materials were obtained by spraying of graphite electrode with the addition of MnO 2. The morphology of Mn-CO composites formed during electric-arc spraying of metal-carbon electrodes in various buffer gases (N 2 and He) and the effect of their subsequent annealing in an oxygen-containing atmosphere was studied. It was experimentally determined that MnO x (MnO, Mn 3 O 4) nanoparticles are mainly formed in N 2 atmosphere, and Mn 7 C 3 carbide nanoparticles are formed in He atmosphere. This phenomenon is explained by different cooling rates of the formed composites. With further annealing of materials, partial oxidation of nanoparticles and graphitization of the carbon matrix occur due to the thermal effect of the oxidation reaction. According to the study of electrochemical activity of materials in the 1 M KOH aqueous electrolyte, the materials with a higher MnO content and a higher degree of soot graphitization have the highest electrochemical capacity of 135 Fg −1 .

show abstract

Intercalation behaviour of magnesium into natural graphite using organic electrolyte systems

Abstract: Use of natural graphite based electrodes as insertion anodes in rechargeable magnesium-ion batteries.

Cited by 31 publications

References 33 publications

Are MXenes suitable as cathode materials for rechargeable Mg batteries?

Are MXenes suitable as cathode materials for rechargeable Mg batteries?

Solvated Ion Intercalation in Graphite: Sodium and Beyond

Supercapacitor behavior of carbon‐manganese oxides nanocomposites synthesized by carbon arc

Contact Info

Product

Resources

About