Abstract
The lifetime of a Molten Carbonate Fuel Cell (MCFC) is reduced by the slow dissolution of the state-of-the-art lithiated nickel oxide cathode material. LiCoO{sub 2} is considered to be an alternative cathode material by its good performance in MCFC tests. However, its dissolution rate was not known. In this letter the dissolution properties of LiCoO{sub 2} in 62:38 (Li:K){sub 2}CO{sub 3} at 923K are reported. The concentration of the dissolved Co{sup 2+} ions in the molten carbonate was determined electrochemically and by the spectrometrical method ICP-AES. The solubility depends on [pCO{sub 2}]{sup 0.5} and on [pO{sub 2}]{sup 0.25}. Under cathode-gas conditions the solubilities ranged from 2 to 13 wt ppm, whereas the corresponding values for lithiated nickel oxide ranged from 7 to 20 wt ppm. The dissolution rate was determined from post-test analyses of small scale MCFC tests to be less than 0.5 {mu}g Co/cm{sup 2}h, which is an order of magnitude lower than that for nickel oxide. 3 figs., 11 refs.
Citation Formats
Veldhuis, J B.J., Eckes, F C, and Plomp, L.
The dissolution properties of LiCoO{sub 2} in molten 62:38 mole% Li:K carbonate.
Netherlands: N. p.,
1991.
Web.
Veldhuis, J B.J., Eckes, F C, & Plomp, L.
The dissolution properties of LiCoO{sub 2} in molten 62:38 mole% Li:K carbonate.
Netherlands.
Veldhuis, J B.J., Eckes, F C, and Plomp, L.
1991.
"The dissolution properties of LiCoO{sub 2} in molten 62:38 mole% Li:K carbonate."
Netherlands.
@misc{etde_10132278,
title = {The dissolution properties of LiCoO{sub 2} in molten 62:38 mole% Li:K carbonate}
author = {Veldhuis, J B.J., Eckes, F C, and Plomp, L}
abstractNote = {The lifetime of a Molten Carbonate Fuel Cell (MCFC) is reduced by the slow dissolution of the state-of-the-art lithiated nickel oxide cathode material. LiCoO{sub 2} is considered to be an alternative cathode material by its good performance in MCFC tests. However, its dissolution rate was not known. In this letter the dissolution properties of LiCoO{sub 2} in 62:38 (Li:K){sub 2}CO{sub 3} at 923K are reported. The concentration of the dissolved Co{sup 2+} ions in the molten carbonate was determined electrochemically and by the spectrometrical method ICP-AES. The solubility depends on [pCO{sub 2}]{sup 0.5} and on [pO{sub 2}]{sup 0.25}. Under cathode-gas conditions the solubilities ranged from 2 to 13 wt ppm, whereas the corresponding values for lithiated nickel oxide ranged from 7 to 20 wt ppm. The dissolution rate was determined from post-test analyses of small scale MCFC tests to be less than 0.5 {mu}g Co/cm{sup 2}h, which is an order of magnitude lower than that for nickel oxide. 3 figs., 11 refs.}
place = {Netherlands}
year = {1991}
month = {Jul}
}
title = {The dissolution properties of LiCoO{sub 2} in molten 62:38 mole% Li:K carbonate}
author = {Veldhuis, J B.J., Eckes, F C, and Plomp, L}
abstractNote = {The lifetime of a Molten Carbonate Fuel Cell (MCFC) is reduced by the slow dissolution of the state-of-the-art lithiated nickel oxide cathode material. LiCoO{sub 2} is considered to be an alternative cathode material by its good performance in MCFC tests. However, its dissolution rate was not known. In this letter the dissolution properties of LiCoO{sub 2} in 62:38 (Li:K){sub 2}CO{sub 3} at 923K are reported. The concentration of the dissolved Co{sup 2+} ions in the molten carbonate was determined electrochemically and by the spectrometrical method ICP-AES. The solubility depends on [pCO{sub 2}]{sup 0.5} and on [pO{sub 2}]{sup 0.25}. Under cathode-gas conditions the solubilities ranged from 2 to 13 wt ppm, whereas the corresponding values for lithiated nickel oxide ranged from 7 to 20 wt ppm. The dissolution rate was determined from post-test analyses of small scale MCFC tests to be less than 0.5 {mu}g Co/cm{sup 2}h, which is an order of magnitude lower than that for nickel oxide. 3 figs., 11 refs.}
place = {Netherlands}
year = {1991}
month = {Jul}
}