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Author

Cho, Jaephil
Nano Energy Storage Materials Lab (NESM)
Research Interests
  • Li-ion battery, metal-air battery, redox-flow battery, flexible battery .

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Observation of reversible pore change in mesoporous tin phosphate anode material during Li alloying/dealloying

Cited 10 times inthomson ciCited 10 times inthomson ci
Title
Observation of reversible pore change in mesoporous tin phosphate anode material during Li alloying/dealloying
Author
Kim, HansuPark, Gyeong-SuKim, EunjinKim, JinyoungDoo, Seok-GwangCho, Jaephil
Keywords
Lithium alloying; Nanocrystals; Pore expansion; Porewall size
Issue Date
2006
Publisher
ELECTROCHEMICAL SOC INC
Citation
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.153, no.9, pp.A1633 - A1636
Abstract
We observed the pore expansion and contraction of mesoporous tin phosphate during Li alloying/dealloying using small-angle X-ray scattering and transmission electron microscopy. As-prepared mesoporous tin phosphate showed pore and porewall sizes of 3 and 2 nm, respectively. During lithium alloying (discharging), pore size was slightly contracted, but porewall size was slightly expanded within the range of 1 nm. However, during lithium dealloying (charging), pore and porewall sizes recovered to their original sizes before cycling. The charged sample had a nanoscale pore (∼3 nm) array with a more or less uniformly sized open-porewall structure of amorphous lithium phosphates with metallic α-Sn face-centered-cubic nanocrystals ∼2 nm in diameter.
URI
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DOI
http://dx.doi.org/10.1149/1.2212061
ISSN
0013-4651
Appears in Collections:
ECHE_Journal Papers

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