Effect of mesoporosity on specific capacitance of carbons

被引：78

作者：

Fernandez, J. A. ^{[1
]}

Tennison, S. ^{[2
]}

Kozynchenko, O. ^{[2
]}

Rubiera, F. ^{[1
]}

Stoeckli, F. ^{[3
]}

Centeno, T. A. ^{[1
]}

机构：

[1] CSIC, Inst Nacl Carbon, E-33080 Oviedo, Spain

[2] MAST Carbon Int Ltd, Surrey GU3 2AF, England

[3] Univ Neuchatel, Dept Phys, CH-2009 Neuchatel, Switzerland

来源：

CARBON | 2009年 / 47卷 / 06期

关键词：

DOUBLE-LAYER CAPACITANCE; SUPERCAPACITOR ELECTRODE MATERIALS; ACTIVATED CARBONS; PORE-SIZE; NANOPOROUS CARBON; POROUS CARBONS; ADSORPTION;

D O I：

10.1016/j.carbon.2009.02.012

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The study compares the structural and electrochemical properties of 12 porous carbons based on phenolic resins, using both aqueous (H2SO4) and aprotic ((C2H5)(4)NBF4 in acetonitrile) electrolytes. It appears that they fit into the general pattern observed for other carbons. The present carbons have micropore volumes varying between 0.29 and 0.66 cm(3) g (1) and average pore widths L-o between 0.62 and 1.23 nm. Five samples are exclusively microporous, whereas seven also display a relatively important mesoporosity. This allows a direct comparison between pairs of carbons with similar micropore systems, with and without mesopores, in order to assess the role of mesoporosity in the electrochemical properties. It appears that mesopores have only a limited influence on the decrease in capacitance at high current density as opposed to earlier assumptions. (C) 2009 Elsevier Ltd. All fights reserved.

引用

页码：1598 / 1604

页数：7

共 30 条

[1] Role of surface chemistry on electric double layer capacitance of carbon materials
Bleda-Martínez, MJ
Maciá-Agulló, JA
Lozano-Castelló, D
Morallón, E
Cazorla-Amorós, D
Linares-Solano, A
[J]. CARBON, 2005, 43 (13) : 2677 - 2684
[2] Correlation between heats of immersion and limiting capacitances in porous carbons
Centeno, T. A.
Fernandez, J. A.
Stoeckli, F.
[J]. CARBON, 2008, 46 (07) : 1025 - 1030
[3] The role of textural characteristics and oxygen-containing surface groups in the supercapacitor performances of activated carbons
Centeno, T. A.
Stoeckli, F.
[J]. ELECTROCHIMICA ACTA, 2006, 52 (02) : 560 - 566
[4] Centeno T.A., 2006, RECENT ADV SUPERCAPA, P57
[5] Effect of pore size and surface area of carbide derived carbons on specific capacitance
Chmiola, J.
Yushin, G.
Dash, R.
Gogotsi, Y.
[J]. JOURNAL OF POWER SOURCES, 2006, 158 (01) : 765 - 772
[6] Chmiola J, 2006, SCIENCE, V313, P1760, DOI [10.1126/science.1132195, 10.1126/science/1132195]
[7] Desolvation of ions in subnanometer pores and its effect on capacitance and double-layer theory
Chmiola, John
Largeot, Celine
Taberna, Pierre-Louis
Simon, Patrice
Gogotsi, Yury
[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (18) : 3392 - 3395
[8] Performance of mesoporous carbons derived from poly(vinyl alcohol) in electrochemical capacitors
Fernandez, J. A.
Morishita, T.
Toyoda, M.
Inagaki, M.
Stoeckli, F.
Centeno, T. A.
[J]. JOURNAL OF POWER SOURCES, 2008, 175 (01) : 675 - 679
[9] Optimisation of supercapacitors using carbons with controlled nanotexture and nitrogen content
Frackowiak, E
Lota, G
Machnikowski, J
Vix-Guterl, C
Béguin, F
[J]. ELECTROCHIMICA ACTA, 2006, 51 (11) : 2209 - 2214
[10] Influence of pore structure on electric double-layer capacitance of template mesoporous carbons
Fuertes, AB
Pico, F
Rojo, JM
[J]. JOURNAL OF POWER SOURCES, 2004, 133 (02) : 329 - 336

← 1 2 3 →