Ordered Mesoporous Carbon (CMK-8) with 3D Cubic Structure for Supercapacitor, 1 g/bottle, CSOMCCMK8
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CMK-8 is a three-dimensional (3D) cubic ordered mesoporous carbon that offers significant advantages over the more common 2D hexagonal CMK-3. While CMK-3 consists of parallel rods, CMK-8 features a bicontinuous, interconnected network of pores, which is a game-changer for high-power supercapacitor performance.
CMK-8 is synthesized via the nanocasting method using KIT-6 silica as a hard template. (1) 3D Interconnectivity: Unlike CMK-3’s independent channels, CMK-8 has a cubic Ia3d symmetry. This means its pores are interconnected in all three dimensions, creating a "gyroid" structure that prevents the "bottleneck" effect. (2) Pore Characteristics: It typically has a pore diameter ranging from 3.2 to 6.6 nm and a specific surface area exceeding 500–1,000 m}^2/g (depending on the carbonization temperature). (3) Mass Transfer: The 3D cubic structure provides superior mass transfer characteristics because electrolyte ions have multiple paths to travel, reducing the risk of a single channel getting blocked.
The reasons for CMK-8 widely used in supercapacitor: (1) Lower ESR: The 3D interconnected framework ensures a continuous electronic pathway, resulting in very low Equivalent Series Resistance (ESR). (2) Volumetric Efficiency: Because the structure is highly ordered and dense, it often yields a higher volumetric capacitance (F/cm^3) than "fluffy" amorphous carbons. (3) Bulky Ion Compatibility: The large mesopores (>3 nm) make it ideal for Ionic Liquids and large organic electrolytes, which would otherwise get stuck in standard microporous activated carbon (like YP-50F).
| Part Number |
CSOMCCMK8 (C-S-OMCCMK8) |
| Specific Surface Area |
~1500 m2/g
|
| Pore Connectivity |
Bicontinuous (3D), 1-2 um long |
| Pore Volume |
0.8-1.3 cm3/g |
| Mesopore Diameter |
~3.5-6.5 nm |
| Specific Capacitance |
~180 F/g (aqueous electrolyte, eg: 2M KOH) ~50 F/g (organic electrolyte, eg: TEABF4) |
| Package Size | 1 g/bottle |
Notes: Please try to store the CMK-8 powder in a dry place (glovebox is the best option).
References:
- J. W. Lang, et al. Study on the electrochemical properties of cubic ordered mesoporous carbon for supercapacitors, J. Power Sources, 2011, 196, 10472-10478.
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T. N. Phan, et al. Enhanced electrochemical performance for EDLC using ordered mesoporous carbons (CMK-3 and CMK-8): Role of mesopores and mesopore structures, Journal of Alloys and Compounds, 2019, 780, 90-97.