Abstract
The effect of lithium hydroxide (LiOH) addition as a lithium source is discussed as a way to prevent Li-ion shortages in aluminum-based α-LiAlO 2 matrices of molten carbonate fuel cells. Our results show that the use of LiOH as a lithium source to prevent a Li-ion shortage caused by a lithiated Al-reaction during the operation of the cell allows for more stable performance and greater durability than when lithium carbonate (Li 2CO 3) is used as the lithium source. The behavior of high-lithium content mixtures is attributed to the presence of reactive aluminum particles, which promote the formation of lithium aluminate (LiAlO 2) phases at 650 °C. The incorporation of low-melting-point lithium and an efficient pathway to the aluminum in a reinforced matrix has improved the in-situ mechanical strength via the lithiated Al-reaction, and they do not lead to any noticeable loss in cell performance, even after 4000 h of operation. From the post-test results, the cell with LiOH stored in the cathode channel shows effective formation of the stable crystalline phase of α-LiAlO 2 and enhancement of the mechanical strength during cell operation.
| Original language | English |
|---|---|
| Pages (from-to) | 6237-6247 |
| Number of pages | 11 |
| Journal | International Journal of Hydrogen Energy |
| Volume | 36 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2011 May 1 |
| Externally published | Yes |
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Keywords
- Al-particles reinforced matrix
- Lithium shortage
- Molten carbonate fuel cell
- Reinforced α-lithium aluminate matrix
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology
Cite this
The effect of lithium addition on aluminum-reinforced α-LiAlO 2 matrices for molten carbonate fuel cells. / Patil, Kailash Yashvant; Yoon, Sung Pil; Han, Jonghee; Lim, Tae Hoon; Nam, SukWoo; Oh, In Hwan.
In: International Journal of Hydrogen Energy, Vol. 36, No. 10, 01.05.2011, p. 6237-6247.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The effect of lithium addition on aluminum-reinforced α-LiAlO 2 matrices for molten carbonate fuel cells
AU - Patil, Kailash Yashvant
AU - Yoon, Sung Pil
AU - Han, Jonghee
AU - Lim, Tae Hoon
AU - Nam, SukWoo
AU - Oh, In Hwan
PY - 2011/5/1
Y1 - 2011/5/1
N2 - The effect of lithium hydroxide (LiOH) addition as a lithium source is discussed as a way to prevent Li-ion shortages in aluminum-based α-LiAlO 2 matrices of molten carbonate fuel cells. Our results show that the use of LiOH as a lithium source to prevent a Li-ion shortage caused by a lithiated Al-reaction during the operation of the cell allows for more stable performance and greater durability than when lithium carbonate (Li 2CO 3) is used as the lithium source. The behavior of high-lithium content mixtures is attributed to the presence of reactive aluminum particles, which promote the formation of lithium aluminate (LiAlO 2) phases at 650 °C. The incorporation of low-melting-point lithium and an efficient pathway to the aluminum in a reinforced matrix has improved the in-situ mechanical strength via the lithiated Al-reaction, and they do not lead to any noticeable loss in cell performance, even after 4000 h of operation. From the post-test results, the cell with LiOH stored in the cathode channel shows effective formation of the stable crystalline phase of α-LiAlO 2 and enhancement of the mechanical strength during cell operation.
AB - The effect of lithium hydroxide (LiOH) addition as a lithium source is discussed as a way to prevent Li-ion shortages in aluminum-based α-LiAlO 2 matrices of molten carbonate fuel cells. Our results show that the use of LiOH as a lithium source to prevent a Li-ion shortage caused by a lithiated Al-reaction during the operation of the cell allows for more stable performance and greater durability than when lithium carbonate (Li 2CO 3) is used as the lithium source. The behavior of high-lithium content mixtures is attributed to the presence of reactive aluminum particles, which promote the formation of lithium aluminate (LiAlO 2) phases at 650 °C. The incorporation of low-melting-point lithium and an efficient pathway to the aluminum in a reinforced matrix has improved the in-situ mechanical strength via the lithiated Al-reaction, and they do not lead to any noticeable loss in cell performance, even after 4000 h of operation. From the post-test results, the cell with LiOH stored in the cathode channel shows effective formation of the stable crystalline phase of α-LiAlO 2 and enhancement of the mechanical strength during cell operation.
KW - Al-particles reinforced matrix
KW - Lithium shortage
KW - Molten carbonate fuel cell
KW - Reinforced α-lithium aluminate matrix
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U2 - 10.1016/j.ijhydene.2011.01.161
DO - 10.1016/j.ijhydene.2011.01.161
M3 - Article
VL - 36
SP - 6237
EP - 6247
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 10
ER -