Preparation of controlled porosity carbon aerogels for energy storage in rechargeable lithium oxygen batteries

Mojtaba Mirzaeian, Peter J. Hall, EPSRC (Funder)

Research output: Contribution to journalArticle

167 Citations (Scopus)

Abstract

Porous carbon aerogels are prepared by polycondensation of resorcinol and formaldehyde catalyzed by sodium carbonate followed by carbonization of the resultant aerogels in an inert atmosphere. Pore structure of carbon aerogels is adjusted by changing the molar ratio of resorcinol to catalyst during gel preparation and also pyrolysis under Ar and activation under CO2 atmosphere at different temperatures. The prepared carbons are used as active materials in fabrication of composite carbon electrodes. The electrochemical performance of the electrodes has been tested in a Li/O2 cell. Through the galvanostatic charge/discharge measurements, it is found that the cell performance (i.e. discharge capacity and discharge voltage) depends on the morphology of carbon and a combined effect of pore volume, pore size and surface area of carbon affects the storage capacity. A Li/O2 cell using the carbon with the largest pore volume (2.195 cm3/g) and a wide pore size (14.23 nm) showed a specific capacity of 1290 mA h g−1.
LanguageEnglish
Pages7444-7451
Number of pages8
JournalElectrochimica Acta
Volume54
Issue number28
DOIs
Publication statusPublished - 1 Dec 2009

Fingerprint

Aerogels
Lithium
Energy storage
Carbon
Porosity
Oxygen
Pore size
Electrodes
Carbonization
Polycondensation
Pore structure
Formaldehyde
Carbonates
Pyrolysis
Gels
Chemical activation
Sodium
Fabrication
Catalysts
Composite materials

Keywords

  • rechargeable battery
  • lithium
  • oxygen
  • carbon
  • activation
  • porosity
  • storage capacity
  • chemical engineering

Cite this

Mirzaeian, Mojtaba ; Hall, Peter J. ; EPSRC (Funder). / Preparation of controlled porosity carbon aerogels for energy storage in rechargeable lithium oxygen batteries. In: Electrochimica Acta. 2009 ; Vol. 54, No. 28. pp. 7444-7451.
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abstract = "Porous carbon aerogels are prepared by polycondensation of resorcinol and formaldehyde catalyzed by sodium carbonate followed by carbonization of the resultant aerogels in an inert atmosphere. Pore structure of carbon aerogels is adjusted by changing the molar ratio of resorcinol to catalyst during gel preparation and also pyrolysis under Ar and activation under CO2 atmosphere at different temperatures. The prepared carbons are used as active materials in fabrication of composite carbon electrodes. The electrochemical performance of the electrodes has been tested in a Li/O2 cell. Through the galvanostatic charge/discharge measurements, it is found that the cell performance (i.e. discharge capacity and discharge voltage) depends on the morphology of carbon and a combined effect of pore volume, pore size and surface area of carbon affects the storage capacity. A Li/O2 cell using the carbon with the largest pore volume (2.195 cm3/g) and a wide pore size (14.23 nm) showed a specific capacity of 1290 mA h g−1.",
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Preparation of controlled porosity carbon aerogels for energy storage in rechargeable lithium oxygen batteries. / Mirzaeian, Mojtaba; Hall, Peter J.; EPSRC (Funder).

In: Electrochimica Acta, Vol. 54, No. 28, 01.12.2009, p. 7444-7451.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Preparation of controlled porosity carbon aerogels for energy storage in rechargeable lithium oxygen batteries

AU - Mirzaeian, Mojtaba

AU - Hall, Peter J.

AU - EPSRC (Funder)

PY - 2009/12/1

Y1 - 2009/12/1

N2 - Porous carbon aerogels are prepared by polycondensation of resorcinol and formaldehyde catalyzed by sodium carbonate followed by carbonization of the resultant aerogels in an inert atmosphere. Pore structure of carbon aerogels is adjusted by changing the molar ratio of resorcinol to catalyst during gel preparation and also pyrolysis under Ar and activation under CO2 atmosphere at different temperatures. The prepared carbons are used as active materials in fabrication of composite carbon electrodes. The electrochemical performance of the electrodes has been tested in a Li/O2 cell. Through the galvanostatic charge/discharge measurements, it is found that the cell performance (i.e. discharge capacity and discharge voltage) depends on the morphology of carbon and a combined effect of pore volume, pore size and surface area of carbon affects the storage capacity. A Li/O2 cell using the carbon with the largest pore volume (2.195 cm3/g) and a wide pore size (14.23 nm) showed a specific capacity of 1290 mA h g−1.

AB - Porous carbon aerogels are prepared by polycondensation of resorcinol and formaldehyde catalyzed by sodium carbonate followed by carbonization of the resultant aerogels in an inert atmosphere. Pore structure of carbon aerogels is adjusted by changing the molar ratio of resorcinol to catalyst during gel preparation and also pyrolysis under Ar and activation under CO2 atmosphere at different temperatures. The prepared carbons are used as active materials in fabrication of composite carbon electrodes. The electrochemical performance of the electrodes has been tested in a Li/O2 cell. Through the galvanostatic charge/discharge measurements, it is found that the cell performance (i.e. discharge capacity and discharge voltage) depends on the morphology of carbon and a combined effect of pore volume, pore size and surface area of carbon affects the storage capacity. A Li/O2 cell using the carbon with the largest pore volume (2.195 cm3/g) and a wide pore size (14.23 nm) showed a specific capacity of 1290 mA h g−1.

KW - rechargeable battery

KW - lithium

KW - oxygen

KW - carbon

KW - activation

KW - porosity

KW - storage capacity

KW - chemical engineering

U2 - 10.1016/j.electacta.2009.07.079

DO - 10.1016/j.electacta.2009.07.079

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SP - 7444

EP - 7451

JO - Electrochimica Acta

T2 - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

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ER -