TY - JOUR
T1 - Carbon material with high specific surface area and high pseudocapacitance
T2 - Possible application in supercapacitors
AU - Volfkovich, Yury M.
AU - Sosenkin, Valentin E.
AU - Rychagov, Alexei Y.
AU - Melezhik, Alexandr V.
AU - Tkachev, Alexei G.
AU - Kabachkov, Eugene N.
AU - Korepanov, Vitaly I.
AU - Khodos, Igor I.
AU - Michtchenko, Alexandre
AU - Shulga, Yury M.
N1 - Publisher Copyright:
© 2021
PY - 2021/5
Y1 - 2021/5
N2 - A new carbon material (NCM-R) was studied, which has a number of unique properties: a high specific surface area according to the BET (SBET = 3270 m2/g), a high micropore volume (~1.7 cm3/g), and a very high specific capacity of 870 F/g. The NCM-R is obtained by carbonizing a mixture of dextrin and graphene oxide and activating the carbonizate with potassium hydroxide. Based on the charging and discharge characteristics, it was established that the NCM-R is a promising material for supercapacitor electrodes with very small (diapason of a few seconds) discharge times and anodes of asymmetric supercapacitors with high specific energy. It is assumed that a large specific capacity is due to the reversible chemical attachment of hydrogen atoms to the carbon skeleton when the NCM-R charge is in the cathode region of the potentials.
AB - A new carbon material (NCM-R) was studied, which has a number of unique properties: a high specific surface area according to the BET (SBET = 3270 m2/g), a high micropore volume (~1.7 cm3/g), and a very high specific capacity of 870 F/g. The NCM-R is obtained by carbonizing a mixture of dextrin and graphene oxide and activating the carbonizate with potassium hydroxide. Based on the charging and discharge characteristics, it was established that the NCM-R is a promising material for supercapacitor electrodes with very small (diapason of a few seconds) discharge times and anodes of asymmetric supercapacitors with high specific energy. It is assumed that a large specific capacity is due to the reversible chemical attachment of hydrogen atoms to the carbon skeleton when the NCM-R charge is in the cathode region of the potentials.
KW - Carbon material
KW - Cyclic volt-farad measurements
KW - Hydrogen intercalation
KW - Impedance
KW - Pseudocapacitance
KW - Raman spectra
KW - Specific surface area
KW - Standard contact porosimetry
UR - http://www.scopus.com/inward/record.url?scp=85103612918&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2021.111063
DO - 10.1016/j.micromeso.2021.111063
M3 - Artículo
AN - SCOPUS:85103612918
SN - 1387-1811
VL - 319
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
M1 - 111063
ER -