Publications associées à Conducteur superionique

A pre-fatigue training strategy to stabilize LiCoO2 at high voltage

Layered cathodes are among the most promising cathodes for high-energy-density Li-ion batteries, yet hindered by the structural degradation from both bulk strain and surface oxygen loss at high voltage (above 4.5 V). Herein, we report a pre-fatigue trainin ...

Royal Soc Chemistry2024

Fluoride-Rich, Organic-Inorganic Gradient Interphase Enabled by Sacrificial Solvation Shells for Reversible Zinc Metal Batteries

Lei Zhang, Kangning Zhao, Jun Lu, Xu Zhang

Zinc metal batteries are strongly hindered by water corrosion, as solvated zinc ions would bring the active water molecules to the electrode/electrolyte interface constantly. Herein, we report a sacrificial solvation shell to repel active water molecules f ...

Amer Chemical Soc2023

Temperature- and vacancy-concentration-dependence of heat transport in Li3ClO from multi-method numerical simulations

Federico Grasselli

Despite governing heat management in any realistic device, the microscopic mechanisms of heat transport in all-solid-state electrolytes are poorly known: existing calculations, all based on simplistic semi-empirical models, are unreliable for superionic co ...

NATURE PORTFOLIO2022

An integrated flexible film as cathode for High-Performance Lithium-Sulfur battery

Kangning Zhao, Yutao Li, Rui Guo, Wen Liu

Poor cycling stability and low volumetric capacity of sulfur cathode prevents practical application of Lithium-sulfur (Li-S) batteries. Herein, we demonstrate a strategy to address the two drawbacks of sulfur cathode by synthesizing a compact and flexible ...

ACADEMIC PRESS INC ELSEVIER SCIENCE2022

Design guidelines for next-generation sodium-nickel-chloride batteries

Daniel Alexander Landmann

Sodium-nickel-chloride batteries have a proven track record for backup power applications, but also show great potential for large-scale stationary electricity storage currently dominated by lithium-ion batteries. While lithium-ion cells rely on critical c ...

EPFL2022

Promoting Persistent Superionic Conductivity in Sodium Monocarba-closo-dodecaborate NaCB11H12 via Confinement within Nanoporous Silica

Mirjana Dimitrievska

Superionic phases of bulk anhydrous salts based on large cluster-like polyhedral (carba)borate anions are generally stable only well above room temperature, rendering them unsuitable as solid-state electrolytes in energy-storage devices that typically oper ...

AMER CHEMICAL SOC2021

Strong coloration of nanoporous tungsten oxides by in-vacuo lithiation for all-solid-state electrochromic devices

Andreas Schueler, Anna Krammer, Maxime Lagier, Olivia Valérie Charlotte Bouvard, Luc Burnier

Electrochromic windows allow for an improved management of solar heat gains in buildings and enhanced visual comfort of building users. All-solid-state electrochromic devices can be especially durable. During their fabrication lithium has to be inserted, p ...

ELSEVIER SCIENCE SA2021

Na3V2(PO4)(3)-Supported Electrospun Carbon Nanofiber Nonwoven Fabric as Self-Standing Na-Ion Cell Cathode

Jürgen Brugger, Carlo Ricciardi, Lorenzo Lucherini

Sodium-ion technology is a reliable alternative to lithium-ion for large-scale energy storage because of the abundance of sodium sources and related low cost. In this work, we report about a simple fabrication of self-standing electrodes based on electrosp ...

2020

The solid-state Li-ion conductor Li7TaO6: A combined computational and experimental study

Nicola Marzari, Leonid Kahle, Aris Marcolongo, Xi Cheng

We study the oxo-hexametallate Li7TaO6 with first-principles and classical molecular dynamics simulations, obtaining a low activation barrier for diffusion of similar to 0.29 eV and a high ionic conductivity of 5.7 x 10(-4) S cm(-1) at room temperature (30 ...

ELSEVIER2020

Anion Selection Criteria for Water-in-Salt Electrolytes

Corsin Battaglia, David Reber, Maximilian Becker

Water-in-salt electrolytes have enabled the development of novel high-voltage aqueous lithium-ion batteries. This study explores the reasons why analogous sodium electrolytes have struggled to reach the same level of electrochemical stability. Solution str ...

WILEY-V C H VERLAG GMBH2020

Comparison of computational methods for the electrochemical stability window of solid-state electrolyte materials

Aris Marcolongo, Matthieu Gilles Mottet

Superior stability and safety are key promises attributed to all-solid-state batteries (ASSBs) containing solid-state electrolyte (SSE) compared to their conventional counterparts utilizing liquid electrolyte. To unleash the full potential of ASSBs, SSE ma ...

Royal Society of Chemistry2020

Plasma heating and generation of energetic D ions with the 3-ion ICRF + NBI scenario in mixed H-D plasmas at JET-ILW

Henri Weisen, Javier García Hernández

Dedicated experiments were conducted in mixed H-D plasmas in JET to demonstrate the efficiency of the 3-ion ICRF scenario for plasma heating, relying on injected fast NBI ions as the resonant ion component. Strong core localization of the RF power depositi ...

IOP Publishing Ltd2020

Aqueous Redox Flow Batteries Enhanced by Solid Boosters

Elena Zanzola

One of the main challenges for certain electricity production technologies (e.g. renewables) is the capability to supply energy according to the demand. It follows that storing energy is a possible solution to the inadequacy between production and demand. ...

EPFL2020

Coatings with tailored electronic and optical properties for advanced glazing

Olivia Valérie Charlotte Bouvard

Modern envelope glazing relies on nanoscale coatings to meet a range of specific needs. Low emissivity coatings can improve the thermal performance of glazing thanks to a thin metallic film. However, the conductive nature of this layer leads to an attenuat ...

EPFL2019

Unsupervised landmark analysis for jump detection in molecular dynamics simulations

Nicola Marzari, Leonid Kahle, Boris Kozinsky, Albert Daniel Musaelian

Molecular dynamics is a versatile and powerful method to study diffusion in solid-state ionic conductors, requiring minimal prior knowledge of equilibrium or transition states of the system's free energy surface. However, the analysis of trajectories for r ...

AMER PHYSICAL SOC2019

Modeling, understanding, and screening fast lithium-ion conductors for solid-state electrolytes

Leonid Kahle

The Li-ion batteries within the consumer electronics used in our everyday life suffer from well-known deficiencies due to the prevalent use of organic liquid electrolytes: the narrow electrochemical stability windows of the organic solvents used in these e ...

EPFL2019

Stability of aqueous electrolytes based on LiFSI and NaFSI

Corsin Battaglia, David Reber

Through a combination of bulk, interface, and interphase effects, water-in-salt electrolytes, employing a high salt concentration, offer a wider electrochemical stability window than traditional dilute aqueous electrolytes. Here we explore chemical stabili ...

2019

A mixed anion hydroborate/carba-hydroborate as a room temperature Na-ion solid electrolyte

Radovan Cerny, Pascal Alexander Schouwink, Matteo Brighi

The novel compound Na2-x(CB11H12)(x)(B12H12)(1-x) shows a fast ionic Na conductivity of 2 mS cm(-1) at room temperature, reaching the superionic regime above 333 K. A low activation energy of 314 meV, in a thermodynamically and electrochemically stable str ...

ELSEVIER SCIENCE BV2018

Mixed gold and platinum nanostructured layers for all-solid-state ion sensors

Giovanni De Micheli, Sandro Carrara, Irene Taurino, Danilo Demarchi, Francesca Criscuolo, Lucia Lobello

The great interest in portable and wearable monitoring systems has promoted in recent years a major expansion of all-solid-state Ion-Selective Electrodes (ISEs). Nanostructured Solid-Contacts (SCs) have shown a promising potential in order to eliminate the ...

IEEE2018

Modelling of advanced three-ion ICRF heating and fast ion generation scheme for tokamaks and stellarators

Jonathan Graves, Laurent Villard, Wilfred Anthony Cooper, David Pfefferlé, Jonathan Marc Philippe Faustin, Samuel Lanthaler

Absorption of ion-cyclotron range of frequencies waves at the fundamental resonance is an efficient source of plasma heating and fast ion generation in tokamaks and stellarators. This heating method is planned to be exploited as a fast ion source in the We ...

2017