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Table 1 Physicochemical parameters of CNFs and AC

From: A Study of Carbon Nanofibers and Active Carbon as Symmetric Supercapacitor in Aqueous Electrolyte: A Comparative Study

Pore size distribution

P%

  

Sample

BETa, m2/g

V t b, cm3/g

V 0.5-2 c, cm3/g ,t-plot

V0.2–0.5 d, cm3/g, MP

V 2-50 e, cm3/g, BJH

V > 50 f

0.5–2g

0.2–0.5g

2–50g

> 50g

APS, nm

Ext, m2/g

CNFs

83

0.39

0.07

0.23

0.09

17.9

59

23

4–7.5

157.4

AC

1042

0.582

0.19

0.32

0.072

33

55

12

0.47

21

  1. aBET surface area
  2. bSingle-point volume adsorption total volume of pores at P/P 0 = 0.9932
  3. cSupermicro volume from 0.5 and 2 nm t-plot, y-intercept
  4. dUltramicro volume from MP method
  5. eMeso volume from BJH method
  6. fVolume greater than 50 nm by BJH method
  7. gThe micro and meso percentage calculated by V MICR/V TOTAL × 100%, V MESO/V TOTAL × 100%, APS (average pore size), EXT (external area) from the slope of t-plot

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