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Cho, Jaephil
Nano Energy Storage Material Lab.
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Effect of pore size and pore wall thickness of mesoporous phase in tin phosphate composite on electrochemical cycling

Author(s)
Kim, EunjinKim, Min GyuKim, YoojinCho, Jaephil
Issued Date
2005
DOI
10.1149/1.1979454
URI
https://scholarworks.unist.ac.kr/handle/201301/4727
Fulltext
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=25144440027
Citation
ELECTROCHEMICAL AND SOLID STATE LETTERS, v.8, no.9, pp.A452 - A455
Abstract
We synthesized mesoporous/crystalline composite with a mass ratio of 1:2 (mesoporous: crystalline), and the resulting mesoporous tin phosphate has different pore size depending on the alkyl chain length (n = 11, 13, 15, and 17) of the surfactant CH3(CH2)nN(CH 3)3Br. Because the crystalline phase (Sn2P 2O7) to mesoporous phase mass ratio is fixed, a decrease in the capacity retention is mainly attributed to the deterioration of the mesophase. The mesoporous phase with smaller pore size causes higher capacity retention, with n = 11 showing the highest capacity retention corresponding to 82%. This decreased to 67, 63, and 59% with increasing pore size, n = 13, 15, and 17, respectively.
Publisher
ELECTROCHEMICAL SOC INC
ISSN
1099-0062

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