Functionalization of Petroleum Coke-Derived Carbon for Synergistically Enhanced Capacitive Performance

Table 1 Textural properties of the carbon materials

Samples	S _BET ^a [m²/g]	S _Micro ^b [m²/g]	S _Meso ^c [m²/g]	V _Total ^d [cm³/g]	V _Micro ^b [cm³/g]	V _Meso ^c [cm³/g]	D ^e [nm]
PCAC	1441	1192	190	0.77	0.62	0.12	2.1
PCHO	1129	836	211	0.61	0.43	0.13	2.2
PCNC	978	705	196	0.53	0.37	0.12	2.2

^aBET (Brunauer-Emmett-Teller) surface area
^bThe micropore surface area S _Micro and micropore volume V _Micro were calculated from the t plot method
^cThe mesopore surface area (S _Meso) and mesopore volume (V _meso) were calculated from the BJH (Barrett-Joyner-Halenda) method
^dTotal pore volume, measured at P/P ₀ = 0.99
^eAverage pore size, calculated by 4 V _Total/S _BET