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Processes at Electrodes

Processes at Electrodes

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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Related Experiment Video

Updated: Apr 13, 2026

$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

Published on: November 10, 2014

In Situ Grown Li₂Te Enhanced Lithium Metal Anode Interfacial Kinetics.

Xiao Meng¹, Nan Xiao¹, Chenglin Gao¹

¹School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), National Industry-Education Platform of Energy Storage, Tianjin University, Tianjin, 300350, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)

|December 9, 2024

Summary

A novel lithium metal anode coating using lithium telluride (Li2Te) on copper mesh significantly enhances battery performance. This stable coating improves interfacial kinetics, enabling long-lasting, high-energy-density batteries.

Keywords:

3D current collectors Li2Te inorganic‐rich SEI interfacial kinetics lithium metal anode

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In Situ Lithiated Reference Electrode: Four Electrode Design for In-operando Impedance Spectroscopy

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Published on: September 12, 2018

Area of Science:

Materials Science
Electrochemistry
Battery Technology

Background:

Lithium metal anodes (LMAs) are crucial for high-energy-density batteries.
Controlling the electrolyte-anode interface is a key challenge for LMA stability.

Purpose of the Study:

To develop a stable coating for lithium metal anodes to improve interfacial kinetics.
To enhance the cycling stability and performance of lithium metal batteries.

Main Methods:

A simple and quick method to form a stable Li2Te coating on commercial copper mesh (LTCM).
Investigated the Li2Te coating's affinity for Li+ and TFSI- anions.
Analyzed the formation of an inorganic-rich solid electrolyte interphase (SEI) and electron-conducting network.

Main Results:

The Li2Te coating reduced the lithium nucleation barrier and guided SEI formation.
Enhanced Li+ diffusion and promoted planar lithium metal growth.
LTCM demonstrated 98% Coulombic efficiency over 2200 cycles and symmetric cells exceeded 5400 hours of cycling.
Full cells with LFP showed 80% capacity retention after 480 cycles.

Conclusions:

The Li2Te coating effectively improves lithium metal anode interfacial kinetics and cycling stability.
The developed LTCM shows significant promise for next-generation high-energy-density batteries.
Stable cycling performance in pouch cells indicates good application prospects.