Structural investigation of the Li+ ion insertion/extraction mechanism in Sn-based composite oxide glasses

Gejke, Cecilia, 1973 (author): Chalmers tekniska högskola,Chalmers University of Technology

Zanghellini, Ezio, 1962 (author): Chalmers tekniska högskola,Chalmers University of Technology

Börjesson, Lars, 1957 (author): Chalmers tekniska högskola,Chalmers University of Technology

Fransson, L. (author)

Edström, K. (author)

(creator_code:org_t)

2001
2001
English.
In: Journal of Physics and Chemistry of Solids. - 0022-3697. ; 62, s. 1213-1218.

Abstract Subject headings

The effect of lithium insertion for two Sn-based composite oxide glasses, Sn2BPO6 and Sn2P2O7, was examined during the first electrochemical discharge/charge cycle. Electrodes based on these glasses were analysed with micro-Raman spectroscopy at different steps during the cycle. In-situ X-ray diffraction has been used to confirm the amorphous state during the lithium insertion and extraction process. No alloy formation between Li and Sn could be discerned throughout the first cycle. It was found that when lithium enters the electrode, a reaction at the surface of the glass particles takes place resulting in Li3PO4, Li2O and SnO2 formation. The charge compensation mechanism is thought to be the reduction of Sn2+ to Sn. The formation of Li3PO4 is found to be irreversible and is as such partly responsible for the large observed capacity loss during the first cycle.

NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

By the author/editor: Gejke, Cecilia, ...; Zanghellini, Ezi ...; Börjesson, Lars, ...; Fransson, L.; Edström, K.

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Inorganic Chemis ...

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Analytical Chemi ...

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Materials Chemis ...

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Condensed Matter ...

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