Supplementary Materials

Facile synthesis of nitrogen-doped porous carbon for CO2 capture and supercapacitors

Huanming Wei, Wei Qian, Ning Fu, HaiJun Chen, Jinbao Liu, Xinze Jiang, Guoxian lan, Hualin Lin* and Sheng Han*

School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Haiquan Road 100, 201418, Shanghai, P. R. China.

(*Corresponding author. E-mail address: (H.-L.L.) Tel.: +86 17701878558; fax: +86 21 60873228; E-mail address: (S. Han.) Tel.: +86 21 60873560; fax: +86 21 60873560)

Fig. S1. HR-TEM image of the NPCs-2-500.

Fig. S2. Nitrogen sorption isotherms of nitrogen-doped porous carbons (PVP/ZnCl2=1).

Fig. S3. Nitrogen sorption isotherms of nitrogen-doped porous carbons (PVP/ZnCl2=3).

Fig. S4. Pore size distributions (PSDs) of nitrogen-doped porous carbons (PVP/ZnCl2=1) by DFT methods.

Fig. S5. Pore size distributions (PSDs) of nitrogen-doped porous carbons (PVP/ZnCl2=3) by DFT methods.

Fig. S6. Cycling stability and the columbic efficiency of NPCs-2-500 on the charge–discharge number at current density of 2 A g-1.

Table S1. Comparison of the CO2 uptake at 1 bar among various adsorbents.

Sample / CO2 capture capacities / mmol·g-1 / Reference
0 ℃ / 25 ℃
HCM / 4.9 / 3.3 / J. Am. Chem. Soc, 2011, 133, 11378
CRHC / unknown / 3.3 / Energ Environ. Sci, 2011, 4, 3535.
H-NMC / unknown / 3.2 / Adv. Funct. Mater, 2013, 23, 2322
NCs / 2.7 / 1.9 / Acs Appl. Mater. Interfaces, 2013, 5, 3160
CPOP / 3.0 / unknown / Small, 2014, 10, 308-315.
CMP / 3.5 / unknown / Adv. Mater, 2014, 26, 8053
COFs / 3.9 / 1.7 / Angew. Chem. Int. Ed, 2015, 54, 3029
STC / 2.3 / 1.3 / J. Mater. Chem. A, 2015, 3, 16213
AC / 2.6 / 1.7 / J. Am. Chem. Soc, 2015, 137, 7210
NPCs / 4.0 / 2.5 / This work

Table S2. CO2 capture capacities of the nitrogen-doped porous carbons at different adsorption temperatures and 1 bar.

CO2 uptake, mmol·g-1 [mg·g-1]
Sample / 0 ℃ / 25 ℃
NPCs-1-400 / 2.1 (92) / -
NPCs-1-500 / 2.3 (101) / -
NPCs-1-600 / 2.0 (88) / -
NPCs-1-700 / 1.8 (92) / -
NPCs-2-400 / 3.0 (133) / 1.9 (83)
NPCs-2-500 / 4.0 (176) / 2.5 (95)
NPCs-2-600 / 2.3 (101) / 1.4 (62)
NPCs-2-700 / 2.1 (93) / 1.2 (53)
NPCs-3-400 / 3.2 (141) / 2.0 (88)
NPCs-3-500 / 2.6 (114) / 1.7 (75)
NPCs-3-600 / 2.2 (97) / 1.3 (57)
NPCs-3-700 / 2.0 (89) / 1.1 (48)

Table S3. Summary of reported capacitive performance of the carbon materials.

Sample / Specific capacitance / F g-1 / Electrolyte / Reference
CA-GA / 300 (at 0.1A g-1) / 1 M H2SO4 / Adv. Mater, 2010, 22, 5202
A-p-BC-N / 195 (at 1 A g-1) / 2 M H2SO4 / Energy Environ. Sci., 2013, 6, 3331
NMC / 262 (at 0.2 A g-1) / 1 M H2SO4 / Adv. Funct. Mater, 2013, 23, 2322
CA-C / 363 (at 0.1 A g-1) / 1 M H2SO4 / Carbon, 2014, 68, 185
PCNS-G / 300 (at 0.5 A g-1) / 6 M KOH / Adv. Energy. Mater, 2015, 5, 1401761.
NHPC / 271 (at 0.2 A g-1) / 6 M KOH / Electrochim. Acta, 2015, 153, 68
B/N-CS / 358 (at 0.1 A g-1) / 1 M H2SO4 / Adv. Funct. Mater, 2015, 26, 111
C/KOH / 300 (at 0.5 A g-1) / 2M KOH / J. Mater. Chem. A, 2016, 4, 7445
NACs / 185 (at 0.4 A g-1) / Uknown / Energy Environ. Sci., 2016, 9, 102
PC / 245 (at 0.5 A g-1) / 6 M KOH / Langmuir, 2016
NPCs / 292 (at 0.5 A g-1) / 2M KOH / This work