Multivalent ions control the transport through lysenin channels

2010 ◽  
Vol 152 (1-3) ◽  
pp. 40-45 ◽  
Author(s):  
Daniel Fologea ◽  
Eric Krueger ◽  
Redwan Al Faori ◽  
Rachel Lee ◽  
Yuriy I. Mazur ◽  
...  
Keyword(s):  
Multivalent Ions

Rational Surface Engineering of MXene@N-doping Hollow Carbon Dual-confined Cobalt Sulfides/Selenides for Advanced Aluminum Batteries

2021 ◽  
Author(s):  
Long Yao ◽  
Shunlong Ju ◽  
Xuebin Yu
Keyword(s):  
Surface Engineering ◽  
Rational Surface ◽  
Natural Abundance ◽  
Multivalent Ions ◽  
N Doping ◽  
Hollow Carbon

Rechargeable aluminum batteries (RABs) based on multivalent ions transfer have attracted great attention due to their large specific capacities, natural abundance, and high safety of metallic Al anode. However, the...

Evolutionary Structure Prediction Assisted Design of Anode Materials for Ca-Ion Battery Based on Phoshphorene

2021 ◽  
Author(s):  
Chandra Chowdhury ◽  
Pranab Gain ◽  
Ayan Datta
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Structure Prediction ◽  
Anode Materials ◽  
Energy Storage Devices ◽  
Efficient Manner ◽  
Storage Devices ◽  
Multivalent Ions ◽  
Store Energy Density ◽  
P Utilization

Utilization of multivalent ions such as Ca(II), Mg(II), Al(III) in the energy storage devices opens up new opportunities to store energy density in a more efficient manner rather than monovalent...

scholarly journals Dynamics of Ion Channels via Non-Hermitian Quantum Mechanics

Entropy ◽  
2021 ◽  
Vol 23 (1) ◽  
pp. 125
Author(s):  
Tobias Gulden ◽  
Alex Kamenev
Keyword(s):  
Quantum Mechanics ◽  
Algebraic Topology ◽  
Riemann Surfaces ◽  
Surrounding Medium ◽  
Coulomb Systems ◽  
Dielectric Constants ◽  
Ion Interactions ◽  
Multivalent Ions ◽  
Electric Filed ◽  
Entropic Effects

We study dynamics and thermodynamics of ion transport in narrow, water-filled channels, considered as effective 1D Coulomb systems. The long range nature of the inter-ion interactions comes about due to the dielectric constants mismatch between the water and the surrounding medium, confining the electric filed to stay mostly within the water-filled channel. Statistical mechanics of such Coulomb systems is dominated by entropic effects which may be accurately accounted for by mapping onto an effective quantum mechanics. In presence of multivalent ions the corresponding quantum mechanics appears to be non-Hermitian. In this review we discuss a framework for semiclassical calculations for the effective non-Hermitian Hamiltonians. Non-Hermiticity elevates WKB action integrals from the real line to closed cycles on a complex Riemann surfaces where direct calculations are not attainable. We circumvent this issue by applying tools from algebraic topology, such as the Picard-Fuchs equation. We discuss how its solutions relate to the thermodynamics and correlation functions of multivalent solutions within narrow, water-filled channels.

scholarly journals Energy Storage in crystalline Materials based on multivalent Ions

2014 ◽  
Vol 70 (a1) ◽  
pp. C365-C365
Author(s):  
Tina Nestler ◽  
William Förster ◽  
Stefan Braun ◽  
Wolfram Münchgesang ◽  
Falk Meutzner ◽  
...  
Keyword(s):  
Electric Energy ◽  
Lithium Ion ◽  
Point Of View ◽  
Electrical Performance ◽  
Ion Diffusion ◽  
Crystalline Materials ◽  
Multivalent Ions ◽  
Main Challenge ◽  
Energy Conversion And Storage ◽  
Solid State Batteries

Energy conversion and storage has become the main challenge to satisfy the growing demand for renewable energy solutions as well as mobile applications. Nowadays, several technologies exist for the conversion of electric energy into e. g. heat, light and motion or vice versa. Among a large variety of storage concepts, the conversion of electrical in chemical energy is of great relevance in particular for location-independent use. Main factors that still limit the use of electrochemical cells are the volumetric and gravimetric energy density, cyclability as well as safety. The concept for a new thin-film rechargeable battery that possibly improves these properties is presented. In contrast to the widespread lithium-ion technology, the discussed battery is based on the redox reaction of multivalent Al-ions and their migration through solid electrolytes. The ion conduction and insertion processes in the crystalline materials of the suggested cell are discussed under a crystallographic point of view to identify suitable electrode and separator materials. A multilayer-stack of all-solid-state batteries is synthesized by pulsed laser deposition and investigated in situ, i. e. during charge and discharge, by X-ray reflection and diffraction methods. The correlation between crystal structure, morphology and electrical performance is investigated in order to characterize the ion diffusion and insertion process.

Polyelectrolyte Brush Interaction with Multivalent Ions

1999 ◽  
Vol 32 (24) ◽  
pp. 8189-8196 ◽  
Author(s):  
E. B. Zhulina ◽  
O. V. Borisov ◽  
T. M. Birshtein
Keyword(s):  
Polyelectrolyte Brush ◽  
Multivalent Ions

scholarly journals Effect of Ionic Compounds of Different Valences on the Stability of Titanium Oxide Colloids

2018 ◽  
Vol 2 (3) ◽  
pp. 32 ◽  
Author(s):  
Szabolcs Muráth ◽  
Szilárd Sáringer ◽  
Zoltán Somosi ◽  
István Szilágyi
Keyword(s):  
Titanium Oxide ◽  
Colloidal Stability ◽  
Heterogeneous Systems ◽  
Multivalent Ions ◽  
Aggregation Behaviour ◽  
Ionic Compounds ◽  
Oxide Particles ◽  
Synthetic Routes ◽  
The Stability

Titanium oxide particles of various morphologies have been prepared for applications of scientific or industrial interest in recent decades. Besides development of novel synthetic routes and solid-state characterization of the obtained particles, colloidal stability of titanium oxide dispersions was the focus of numerous research groups due to the high importance of this topic in applications in heterogeneous systems. The influence of dissolved ionic compounds, including monovalent salts, multivalent ions and polyelectrolytes, on the charging and aggregation behaviour of titanium oxide materials of spherical and elongated structures will be discussed in the present review.

Fast Diffusion of Multivalent Ions Facilitated by Concerted Interactions in Dual-Ion Battery Systems

2018 ◽  
Vol 8 (27) ◽  
pp. 1801475 ◽  
Author(s):  
Hongyi Li ◽  
Norihiko L. Okamoto ◽  
Takuya Hatakeyama ◽  
Yu Kumagai ◽  
Fumiyasu Oba ◽  
...  
Keyword(s):  
Fast Diffusion ◽  
Multivalent Ions ◽  
Battery Systems

scholarly journals Mass Transfer Phenomena during Electrodialysis of Multivalent Ions: Chemical Equilibria and Overlimiting Currents

2018 ◽  
Vol 8 (9) ◽  
pp. 1566 ◽  
Author(s):  
Manuel Martí-Calatayud ◽  
Montserrat García-Gabaldón ◽  
Valentín Pérez-Herranz
Keyword(s):  
Mass Transfer ◽  
Electric Field ◽  
Membrane Surface ◽  
Industrial Effluents ◽  
Water Dissociation ◽  
Chemical Equilibria ◽  
Multivalent Ions ◽  
Current Voltage ◽  
Weak Electrolytes ◽  
New Applications

Electrodialysis is utilized for the deionization of saline streams, usually formed by strong electrolytes. Recently, interest in new applications involving the transport of weak electrolytes through ion-exchange membranes has increased. Clear examples of such applications are the recovery of valuable metal ions from industrial effluents, such as electronic wastes or mining industries. Weak electrolytes give rise to a variety of ions with different valence, charge sign and transport properties. Moreover, development of concentration polarization under the application of an electric field promotes changes in the chemical equilibrium, thus making more complex understanding of mass transfer phenomena in such systems. This investigation presents a set of experiments conducted with salts of multivalent metals with the aim to provide better understanding on the involved mass transfer phenomena. Chronopotentiometric experiments and current-voltage characteristics confirm that shifts in chemical equilibria can take place simultaneous to the activation of overlimiting mass transfer mechanisms, that is, electroconvection and water dissociation. Electroconvection has been proven to affect the type of precipitates formed at the membrane surface thus suppressing the simultaneous dissociation of water. For some electrolytes, shifts in the chemical equilibria forced by an imposed electric field generate new charge carriers at specific current regimes, thus reducing the system resistance.

Sign in / Sign up

Export Citation Format

Share Document