Table 1 Structure properties and surface chemistry of the NCNFs

From: Highly nitrogen doped carbon nanofibers with superior rate capability and cyclability for potassium ion batteries

 

R

I G /I D

SBET (m2 g–1)

Vt (cm3 g–1)a

Element content (at%)

% of total N 1s

C (mAh g–1)b

   

C

N

O

N-6

N-5

N-Q

NCNF-650

2.5

0.94

99

0.42

80.6

13.8

5.6

33.3

22.7

44.0

368

NCNF-950

3.6

0.96

107

0.71

87.8

8.1

4.1

23.8

-

76.2

297

NCNF-1100

4.3

0.98

110

0.72

92.1

4.9

3.0

15.2

-

84.8

281

  1. a The total pore volume was determined at a relative pressure of 0.98
  2. b The values are the first charge capacity at current density of 25 mA g–1
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