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Related Experiment Video

Updated: May 29, 2025

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

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Published on: November 10, 2014

Cyclically Generated Phase Segregation Synergizing with Si Enhances Lithium-Ion Storage Capability.

Haoyuan Zhu¹, Zaoyan Yu¹, Yushuai Song¹

¹Department of Materials, Dalian Maritime University, Dalian, 116026, PR China.

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry

|February 3, 2025

Summary

This summary is machine-generated.

Researchers developed a novel silicon-manganese metal-organic framework (Si@Mn-MOF) composite for lithium-ion batteries. This material overcomes silicon

Keywords:

Lithium-ion battery Metal organic framework Phase segregation Silicon anode material

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Area of Science:

Materials Science
Electrochemistry
Nanotechnology

Background:

Silicon anodes offer high capacity for lithium-ion batteries (LIBs) but suffer from volume expansion and capacity fading.
Instability of the solid-electrolyte interface exacerbates performance degradation in silicon anodes.

Purpose of the Study:

To investigate a synergistic effect from Mn-based metal-organic framework (Mn-MOF) phase segregation to modify silicon anodes.
To enhance the electrochemical performance and cycling stability of silicon anodes in LIBs.

Main Methods:

A facile self-assembly method was employed to create a Si@Mn-MOF composite.
Electrochemical performance was evaluated as an anode material in LIBs.
Cycling stability and capacity retention were assessed over 400 cycles.

Main Results:

The Si@Mn-MOF composite demonstrated improved reversibility and lithium-ion storage capability.
A high reversible capacity retention of 1234.4 mAh g^-1 was achieved after 400 cycles.
The unique composite structure effectively mitigated issues associated with silicon volume expansion.

Conclusions:

The synergistic effect of Mn-MOF phase segregation offers a promising strategy for stabilizing silicon anodes.
Si@Mn-MOF composites show potential for commercial application in high-performance LIBs.
This approach enhances the durability and energy storage capacity of next-generation batteries.