Table 1 BET Specific surface area and porous structure of HPCAs-0.2-800, HPCAs-0.4-800 and HPCAs-0.8-800.

From: Coal-based 3D hierarchical porous carbon aerogels for high performance and super-long life supercapacitors

Sample

SBETa (m2 g−1)

Vtotalb (cm−3 g−1)

Vmesoc (cm−3 g−1)

Smicrod (m2 g−1)

Dape (nm)

HPCAs-0.2-800

1018

1.65

0.78

450

6.4

HPCAs-0.4-800

1303

1.45

0.61

856

4.4

HPCAs-0.8-800

847

1.30

0.80

427

6.1

  1. aBET surface area. bThe total pore volume at P/Po = 0.99, cThe mesopore volume calculated using the BJH method based on the Kelvin equation. dMicropore surface area calculated using the V-t plot method. eAverage pore size (4Vt/SBET).
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