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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: May 9, 2025

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Published on: February 1, 2016

Engineering the Undercoordinated Edge-Rich Single-Crystal Microreactors for High-Performance Lithium─Sulfur

Mengdi Sun^1,2, Xincheng Lei³, Jiayi Wang²

¹Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China.

Small (Weinheim an Der Bergstrasse, Germany)

|May 3, 2025

Summary

Researchers developed a novel nickel-cobalt bimetallic oxide/carbon nanotube electrocatalyst (NCO/CNT) to improve lithium-sulfur (Li-S) batteries. This catalyst effectively suppresses shuttle effects and enhances sulfur conversion for better performance.

Keywords:

conversion kinetic lithium─sulfur battery microreactors separator modification undercoordination chemistry

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Last Updated: May 9, 2025

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Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Lithium-sulfur (Li-S) batteries offer high theoretical capacity and cost-effectiveness.
Practical application is limited by shuttle effects and slow conversion kinetics.
Need for advanced electrocatalysts to overcome these limitations.

Purpose of the Study:

To develop a novel microreactor electrocatalyst for enhanced Li-S battery performance.
To investigate the catalytic activity of undercoordinated edge-rich single-crystal nickel-cobalt bimetallic oxides (NCO) embedded in carbon nanotubes (CNT).

Main Methods:

Synthesis of NCO/CNT composite as an electrocatalyst.
Structural and compositional analysis of the NCO/CNT material.
Electrochemical testing of Li-S batteries incorporating the NCO/CNT catalyst.
Theoretical calculations to understand catalytic mechanisms.

Main Results:

NCO/CNT exhibits abundant undercoordinated edge sites with strong catalytic activity.
Effective immobilization and conversion of sulfur species were observed.
Li-S batteries achieved high initial discharge capacity (1327.1 mAh g⁻¹) and areal capacity (5.4 mAh cm⁻²).
Excellent capacity retention (96.3% after 50 cycles) was demonstrated.

Conclusions:

The edge-rich, undercoordinated NCO/CNT electrocatalyst significantly improves Li-S battery performance.
The catalyst design enhances structural stability and catalytic efficiency.
This work provides a pathway for developing high-performance sulfur microreactors for sustainable energy storage.