2015
DOI: 10.1016/j.jallcom.2015.01.223
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A generalized ZnCl2 activation method to produce nitrogen-containing nanoporous carbon materials for supercapacitor applications

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Cited by 39 publications
(12 citation statements)
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References 20 publications
(24 reference statements)
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“…In general, high surface areas and large pore volumes are highly required for heterogeneous catalysts. Chemical activation followed by carbonization process has been extensively employed to achieve such materials using different chemical activating reagents, typically KOH, H 3 PO 4 , or ZnCl 2 , etc 61 , 62 . The ZnCl 2 activation approach can enjoy many advantages of low cost, and minor erosion.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…In general, high surface areas and large pore volumes are highly required for heterogeneous catalysts. Chemical activation followed by carbonization process has been extensively employed to achieve such materials using different chemical activating reagents, typically KOH, H 3 PO 4 , or ZnCl 2 , etc 61 , 62 . The ZnCl 2 activation approach can enjoy many advantages of low cost, and minor erosion.…”
Section: Resultsmentioning
confidence: 99%
“…During carbonization process, the ZnCl 2 salt shows strong interaction or coordination with the carbon π-electron organism. At elevated temperature beyond the boiling point of ZnCl 2 (756 °C) 62 , it can be evaporated away completely, where etching effect toward C−C bonds takes place, leaving numerous carbon atom vacancy and further evolving into abundant nanopores. So it can be concluded that the quantity of ZnCl 2 salt used in synthesis has crucial impacts upon the as-synthesized carbon texture.…”
Section: Resultsmentioning
confidence: 99%
“…4d), the CBC-1 looks composed of small carbon fragments and also more loose and less agglomeration than CBC (Fig. 4b), which might result from the thermal decomposition of carbon precursors and the volatilization of ZnCl 2 above 600 o C during activation process [36].…”
Section: Positive Electrodementioning
confidence: 98%
“…La estructura final de los geles de carbono se obtiene luego del secado (subcrítico, supercrítico o criogénico), y posterior carbonización y/o activación (física o química) con el fin de aumentar el área superficial, y también se pueden incorporar heteroátomos tales como oxígeno, nitrógeno y/o fósforo, que puedan promover efectos pseudocapacitivos originados por propiedades de electrón aceptor/donador [24]. La activación química es la más utilizada debido a que se alcanzan áreas superficiales específicas mayores a 1000m 2 /g donde los agentes activantes más comunes son KOH [25][26][27][28][29], K 2 CO 3 [30][31][32][33], ZnCl 2 [30,34,35] y H 3 PO 4 [30,[36][37][38][39][40][41][42]. El KOH como agente activante tiende a producir una estructura más microporosa con poros anchos, el K 2 CO 3 ha sido utilizado recientemente por ser ambientalmente amigable y seguro, el ZnCl 2 es un agente que tiende un mayor desarrollo mesoporoso y el H 3 PO 4 proporciona una distribución de poros más heterogénea con posibilidad de inclusión de heteroátomos de fósforo y es de fácil recuperación [40,43].…”
Section: Introductionunclassified