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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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Li reaction behavior of GaP nanoparticles prepared by a sodium naphthalenide reduction method

Cited 21 times inthomson ciCited 19 times inthomson ci
Title
Li reaction behavior of GaP nanoparticles prepared by a sodium naphthalenide reduction method
Author
Hwang, HaesukKim, Min GyuCho, Jaephil
Keywords
Electrochemistry; Gallium compounds; Intercalation compounds; Phase transitions; Reduction; X ray diffraction
Issue Date
200701
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY C, v.111, no.3, pp.1186 - 1193
Abstract
Li reaction phenomena of GaP nanoparticles (<30 nm) prepared by a sodium naphthalenide reduction method at 390°C in an autoclave were investigated using electrochemical, in (ex) situ X-ray diffraction (XRD), and X-ray absorption spectra (XAS) measurements between 1.5 and 0 V. During the first discharge reactions, lithium intercalated Li 2GaP and irreversible Li nP 7 phases were formed. Li 2GaP was only stable above 0.36 V after which it decomposed to Li xGa and electrochemically inactive Li nP phases. Overall, the reversible capacity contribution (∼800 mAh/g) was from the reversible phase transformation between the Li xGa and Ga phases.
URI
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DOI
http://dx.doi.org/10.1021/jp065560k
ISSN
1932-7447
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ECHE_Journal Papers

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