Conductivity and viscosity studies of dimethyl sulfoxide (DMSO)-based electrolyte solutions at 25 °C

Kumar, T. Prem; Prabhu, P. V. S. S.; Srivastava, Ashwini K.; Kumar, Ujjal; Ranganathan, R.; Gangadharan, R.

doi:10.1016/0378-7753(94)01911-8

Cited by 20 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to natural convection, it is possible that a lateral heterogeneity in current density (across the Pt mesh) may lead to material transport via diffusioosmotic fluid flow, , which in turn may lead to the observed asymmetry. The average D obtained in [EMIM][EtSO 4 ] is 1 order of magnitude smaller than in DMSO, as expected based on the higher viscosity of the former (∼100 vs 2.0 cP) …”

Section: Resultssupporting

confidence: 74%

“…] is 1 order of magnitude smaller than in DMSO, 39 as expected based on the higher viscosity of the former (∼100 vs 2.0 cP). 68 During the cathodic electrolysis of AMP−luc [EMIM]-[EtSO 4 ], the interface remains relatively quiescent and the distribution of D across the electrode surface is therefore relatively narrow (Figure 2e). This is surprising, as despite both the large negative potential used to trigger the pro-fluorescent reaction (−2.0 V vs Ag/AgCl for 15 s) and the moderate level of water content in [EMIM][EtSO 4 ] (930 ppm), there was no evidence of hydrogen bubbles forming on the electrode (Video S2).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Separating Convective from Diffusive Mass Transport Mechanisms in Ionic Liquids by Redox Pro-fluorescence Microscopy

et al. 2023

View full text Add to dashboard Cite

The study of electrochemical reactivity requires analytical techniques capable of probing the diffusion of reactants and products to and from electrified interfaces. Information on diffusion coefficients is often obtained indirectly by modeling current transients and cyclic voltammetry data, but such measurements lack spatial resolution and are accurate only if mass transport by convection is negligible. Detecting and accounting for adventitious convection in viscous and wet solvents, such as ionic liquids, is technically challenging. We have developed a direct, spatiotemporally resolved optical tracking of diffusion fronts which can detect and resolve convective disturbances to linear diffusion. By tracking the movement of an electrode-generated fluorophore, we demonstrate that parasitic gas evolving reactions lead to 10-fold overestimates of macroscopic diffusion coefficients. A hypothesis is put forward linking large barriers to innersphere redox reactions, such as hydrogen gas evolution, to the formation of cation-rich overscreening and crowding double layer structures in imidazolium-based ionic liquids.

show abstract

Section: Resultssupporting

confidence: 74%

Section: ■ Results and Discussionmentioning

confidence: 99%

Separating Convective from Diffusive Mass Transport Mechanisms in Ionic Liquids by Redox Pro-fluorescence Microscopy

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The statistics of the Coulombic efficiency data are shown in Figure S1. We note the initial lower capacity of the MLIB cell (1.0 mAh cm –2 ) compared to that of the Li|TiS 2 cell (1.3 mAh cm –2 ) is coming from the higher overpotential of Mg anodes and the lower ionic conductivity of MLIB electrolyte (∼3 mS cm –1 ) compared to that of the Li + electrolyte (4.8 mS cm –1 ). ,, …”

Section: Resultsmentioning

confidence: 81%

High Areal Capacity Hybrid Magnesium–Lithium-Ion Battery with 99.9% Coulombic Efficiency for Large-Scale Energy Storage

Yoo

Liang

et al. 2015

ACS Appl. Mater. Interfaces

124

102

View full text Add to dashboard Cite

Hybrid magnesium-lithium-ion batteries (MLIBs) featuring dendrite-free deposition of Mg anode and Li-intercalation cathode are safe alternatives to Li-ion batteries for large-scale energy storage. Here we report for the first time the excellent stability of a high areal capacity MLIB cell and dendrite-free deposition behavior of Mg under high current density (2 mA cm(-2)). The hybrid cell showed no capacity loss for 100 cycles with Coulombic efficiency as high as 99.9%, whereas the control cell with a Li-metal anode only retained 30% of its original capacity with Coulombic efficiency well below 90%. The use of TiS2 as a cathode enabled the highest specific capacity and one of the best rate performances among reported MLIBs. Postmortem analysis of the cycled cells revealed dendrite-free Mg deposition on a Mg anode surface, while mossy Li dendrites were observed covering the Li surface and penetrated into separators in the Li cell. The energy density of a MLIB could be further improved by developing electrolytes with higher salt concentration and wider electrochemical window, leading to new opportunities for its application in large-scale energy storage.

show abstract

Toward Practical Li–S Batteries: On the Road to a New Electrolyte

Song,

Liang,

Eko

et al. 2024

Advanced Energy Materials

View full text Add to dashboard Cite

The lithium–sulfur (Li–S) battery system has attracted considerable attention due to its ultrahigh theoretical energy density and promising applications. However, with the increasing demands on S loading and electrolyte content, practical Li–S batteries still face several serious challenges, such as slow reaction kinetics at the cathode interface, unstable anode interface reactions, and undesirable crosstalk effects between the cathode and anode. Traditional electrolyte systems often struggle to address these challenges under practical conditions, thereby rendering it imperative to establish a new electrolyte system for practical Li–S batteries. This review first discusses the necessity of establishing a new electrolyte and propose specific parameter requirements, such as the electrolyte‐to‐sulfur mass ratio (Em/S). Subsequently, some electrolyte modification strategies proposed by researchers are summarized to address the different challenges associated with practical Li–S batteries. Finally, the combination of different strategies is reviewed, aiming to reveal more effective design approaches that simultaneously address multiple challenges, while providing guidance for establishing a new balanced electrolyte for practical Li–S batteries. This article promotes the development of new electrolytes for practical Li–S batteries and can act as a reference for the development of electrolytes for other secondary batteries.

show abstract

Conductivity and viscosity studies of dimethyl sulfoxide (DMSO)-based electrolyte solutions at 25 °C

Cited by 20 publications

References 16 publications

Separating Convective from Diffusive Mass Transport Mechanisms in Ionic Liquids by Redox Pro-fluorescence Microscopy

Separating Convective from Diffusive Mass Transport Mechanisms in Ionic Liquids by Redox Pro-fluorescence Microscopy

High Areal Capacity Hybrid Magnesium–Lithium-Ion Battery with 99.9% Coulombic Efficiency for Large-Scale Energy Storage

Toward Practical Li–S Batteries: On the Road to a New Electrolyte

Contact Info

Product

Resources

About