Ultrahigh Specific Surface Area Activated Carbon (SSA01, 3550 m2/g) for Supercapacitor and Catalyst Support, 5 g/bottle, CSCSACUHSSA01

In the field of advanced energy storage, Ultrahigh Specific Surface Area (SSA) Activated Carbon refers to carbonaceous materials with surface areas significantly exceeding the traditional limits of commercial activated carbon (1,000–2,000 m2/g). Recent breakthroughs have pushed these materials toward as high as 3,000 to 4,800 m2/g.

In supercapacitors, capacitance (C) is theoretically proportional to the surface area (S). However, with ultrahigh SSA materials, the relationship is more complex: (1) Capacitance Gains: These materials can achieve specific capacitances of 300–420 F/g in aqueous electrolytes (like 6M KOH). (2) The "Pore Size" Caveat: If the surface area consists mostly of "dead" micropores (<0.5 nm), large electrolyte ions cannot enter. For organic or ionic liquid electrolytes, a hierarchical structure (micropores for storage + mesopores for transport) is required to actually utilize the ultrahigh SSA. (3) Energy Density: High SSA carbons enable gravimetric energy densities of 50–120 Wh/kg in advanced ionic liquid systems, bridging the gap between traditional capacitors and batteries.

The primary goal of a support is to maximize the Electrochemical Active Surface Area (ECSA) of the expensive catalyst. (1) Atomic Dispersion: High SSA allows for "Single Atom Catalysis" (SAC), where individual metal atoms are anchored to defects or nitrogen-doped sites in the carbon lattice, achieving nearly 100% atom utilization. (2) Nanoparticle Stabilization: The complex pore structure acts as a physical barrier. Even at high metal loadings (e.g., 40 wt% Pt), the nanoparticles remain isolated in separate pores rather than merging into larger, less active chunks. (3) Surface Functionality: Ultrahigh SSA carbons are often "functionalized" with oxygen or nitrogen groups. These act as "anchors" that chemically bond to the metal, strengthening the Metal-Support Interaction (MSI) and preventing the catalyst from washing away during liquid-phase reactions.

Notes: Please try to store the ultrahigh specific surface area carbon powder in a dry place (glovebox is the best option). 

References: 

1. Y. Zhang, et al. Ultra-high surface area and nitrogen-rich porous carbons prepared by a low-temperature activation method with superior gas selective adsorption and outstanding supercapacitance performance, Chem. Engineering J., 2019, 355, 309-319.
2. S. Liu, et al. Sulfur-doped nanoporous carbon spheres with ultrahigh specific surface area and high electrochemical activity for supercapacitor, J. Power Sources, 2017, 360, 373-382.