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Related Concept Videos

Standard Electrode Potentials03:02

Standard Electrode Potentials

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On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
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Electrodeposition01:08

Electrodeposition

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Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
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Processes at Electrodes01:30

Processes at Electrodes

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The electrode interacts with ions in the electrolyte solution at its interface. The rate of oxidation and reduction depends on the speed at which electrons can transfer through this interface. As ions attach to or leave the electrode surface, the electrode acquires a charge, and an electrical potential forms across the interface, making the process more difficult to reach equilibrium. The charge on the electrode affects the local ion concentrations in the solution, though thermal motion...
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Electrolysis03:00

Electrolysis

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In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
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Potentiometry: Types of Electrodes01:19

Potentiometry: Types of Electrodes

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Reference electrodes serve as a stable reference point for potentiometric measurements, while indicator and working electrodes react to variations in the composition of a solution.
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...
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Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Updated: Mar 21, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Highly Conductive Irreducible Electrolytes for Next-Generation Low-Potential Anodes.

Mengfu Tu1, Victor Landgraf1, Wenxuan Zhao1

  • 1Section Storage of Electrochemical Energy, Radiation Science and Technology, Faculty of Applied Sciences, Delft University of Technology, Delft 2629 JB, The Netherlands.

Journal of the American Chemical Society
|March 20, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed new Li-rich antifluorite solid electrolytes for safer, high-energy all-solid-state batteries. These materials show excellent ionic conductivity and stability with silicon anodes, improving battery performance.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Solid-State Chemistry

Background:

  • All-solid-state batteries offer enhanced safety and energy density over conventional lithium-ion batteries.
  • Solid electrolytes are crucial for enabling high-energy anodes like metallic lithium and silicon.
  • Current solid electrolytes often suffer from reductive decomposition at low potentials due to high-valence cations, causing lithium loss.

Purpose of the Study:

  • To develop novel solid electrolytes that are thermodynamically stable at low potentials, possess high ionic conductivity, and offer sufficient oxidative stability.
  • To investigate a new family of Li-rich antifluorite irreducible solid electrolytes, specifically Li2.65S0.35NxP0.65-x, for all-solid-state battery applications.
  • To evaluate the compatibility and performance of these electrolytes with silicon anodes.

Main Methods:

  • Synthesis and characterization of a new series of nitrido-phosphido-sulfide solid electrolytes (Li2.65S0.35NxP0.65-x).
  • Measurement of ionic conductivity and oxidative stability of the optimized electrolyte composition.
  • Computational simulations including *ab initio* molecular dynamics and density functional theory to understand Li diffusion mechanisms.
  • Fabrication and testing of a full battery cell utilizing the novel solid electrolyte with a silicon anode and a LiCoO2-Li3InCl6 cathode.

Main Results:

  • The optimized composition, Li2.65S0.35N0.15P0.5, achieved a high ionic conductivity of 1.05 mS cm-1 and oxidative stability of 1.15 V vs Li+/Li.
  • Computational studies revealed that enhanced Li diffusion is attributed to enlarged diffusion bottleneck sizes resulting from anion substitution.
  • The solid electrolyte demonstrated excellent compatibility with silicon anodes, enabling a high initial Coulombic efficiency of 94.2% and stable cycling performance in a full cell.

Conclusions:

  • Li-rich antifluorite irreducible solid electrolytes, particularly nitrido-phosphido-sulfides, are promising candidates for next-generation all-solid-state batteries.
  • The developed electrolyte overcomes the limitations of reductive decomposition at low potentials, facilitating the use of high-energy-density anodes.
  • This research highlights the potential of irreducible solid electrolytes in designing safer and more efficient all-solid-state batteries.