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Updated: May 11, 2026
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Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices
Published on: March 27, 2019
Morphology-dependent Li storage performance of ordered mesoporous carbon as anode material
Min-Sik Kim1, Dhrubajyoti Bhattacharjya, Baizeng Fang
1Department of Advanced Materials Chemistry, Korea University, 2511 Sejong-ro, Sejong, Republic of Korea.
Langmuir : the ACS Journal of Surfaces and Colloids
|May 22, 2013
Summary
Short ordered mesoporous carbons (OMCs) show superior lithium-ion battery anode performance. The shortest OMC material demonstrated the highest capacity and excellent cyclability compared to graphite.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Developing advanced anode materials is crucial for enhancing lithium-ion battery performance.
- Ordered mesoporous carbons (OMCs) offer unique structural advantages for energy storage applications.
Purpose of the Study:
- To investigate rod-shaped OMCs of varying lengths as potential anode materials for lithium-ion batteries.
- To correlate OMC structural characteristics, specifically length, with electrochemical performance.
Main Methods:
- Replication method using size-tunable SBA-15 silica templates to synthesize rod-shaped OMCs.
- Electrochemical testing, including capacity, cyclability, rate capability, and electrochemical impedance spectroscopy.
Main Results:
- All synthesized OMCs outperformed commercial graphite in Li storage capacity and cyclability.
- The shortest OMC (OMC-3) exhibited the highest reversible discharge capacity (1012 mAh g⁻¹ at 100 mA g⁻¹) and 86.6% capacity retention after 100 cycles.
- OMC-3 demonstrated superior performance due to higher surface area, larger mesopore volume, and shorter channels facilitating ion diffusion.
Conclusions:
- Rod-shaped OMCs are promising anode materials for high-performance lithium-ion batteries.
- Optimizing OMC length is critical for enhancing Li storage capacity, cyclability, and rate capability.
- Shorter OMC structures facilitate faster ion transport and reduce interfacial resistances, leading to improved battery performance.
