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, Suk Woo
AU - Oh, In Hwan
N1 - Funding Information:
“This Research was supported by the Global Research Laboratory Program funded by the Ministry of Education, Science and Technology of Korea and Doosan Heavy Industry ”.
Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/5
Y1 - 2011/5
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-LiAlO2 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 (Li2CO3) 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 (LiAlO2) 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-LiAlO2 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-LiAlO2 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 (Li2CO3) 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 (LiAlO2) 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-LiAlO2 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
AN - SCOPUS:79955482388
VL - 36
SP - 6237
EP - 6247
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 10
ER -