Technical information

1. Shape-controlled porous carbon materials that combine a high porosity of over 90% with a high Brunauer-Emmett-Teller surface area of 700 m2/g (Fig. 1). The products consisted of cross-linked carbon beams as shown in Fig. 2. The macro-pores (5 μm < pore size < 50 μm) were found between the cross-linked carbon beams. Moreover, it was found that the carbon beams containing surface micro-pores (pore size < 2 nm) and meso-pores (5 nm < pore size < 50 nm) as shown in Fig. 3.
   

Fig. 1 Activated mold carbon  (d=20 mm, t= 1 mm) (left)

          Various shaped activated mold carbons (right)                      

Fig. 2 Cross-linked carbon beams in activated mold carbon (left)

          Micro-sized pores constructed with carbon beams in activated mold carbon (right)

Fig. 3  Nano-sized pores on a carbon beam in activated mold carbon (left)

           Meso-sized pore meaning diameter distributed on carbon beams (right)

1. Features of multi-porous activated mold carbon
   

1. Volume of meso-pores: 0.21 cm3／g
   

2. Surface area of meso-pores: 140  m2／g
   

3. Total BET surface area: 400〜 670 m２／g
   

4. Total porosity: 95 %
   

1. Amorphous structure
   

2. Electrical conductivity: 5.4〜20 Ωm ( 2.9 × 10-3  Ωm after heating under N2 gas)      *graphite: 10 -5  Ωm
   

3. Various metal-plating is possible
   

1. Density: 0.11〜0.32 g ／ cm3
   

2. Bending strength: 0.13〜4.89 MPa
   

REFERENCES

6. F.Kurosaki, H. Koyanaka, M. Tsujimoto, Y. Imamura, Shape-controlled multi-porous carbon with hierarchical micro-meso-macro pores synthesized by flash heating of wood biomass, Carbon, Vol. 46, pp.850-857, (2008)
   

6. F.Kurosaki, H. Koyanaka, T. Hata and Y. Imamura, Macro porous carbon prepared by flash heating of sawdust, Carbon, Vol. 45, pp. 671-673, (2007)
   

Patent: WO2007126118, PCT/JP2007/59395) ・2006. May 2nd