The effect of lithium addition on aluminum-reinforced α-LiAlO2 matrices for molten carbonate fuel cells

Title
The effect of lithium addition on aluminum-reinforced α-LiAlO2 matrices for molten carbonate fuel cells
Authors
카일라쉬윤성필한종희임태훈남석우오인환
Keywords
Molten carbonate fuel cell; Al-particles reinforced matrix; Lithium shortage; Reinforced α-lithium; aluminate matrix
Issue Date
2011-05
Publisher
International journal of hydrogen energy
Citation
VOL 36, NO 10, 6237-6247
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-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-lithiumcontent mixtures is attributed to the presence of reactive aluminum particles, which promote the formation of lithium aluminate (LiAlO2) phases at 650 ℃. 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.
URI
http://pubs.kist.re.kr/handle/201004/39708
ISSN
0360-3199
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE