TY - JOUR
T1 - Microwave-assisted synthesis of tin sulfide nanoflakes and their electrochemical performance as Li-inserting materials
AU - Patra, Chitta R.
AU - Odani, Ayelet
AU - Pol, Vilas G.
AU - Aurbach, Doron
AU - Gedanken, Aharon
PY - 2007/2
Y1 - 2007/2
N2 - A novel and quick method has been developed for the preparation of tin sulfide (SnS and SnS 2) nanoflakes in high yield (≈93%) by a microwave irradiation technique for 10 40 min. The sulfides were synthesized in a simple domestic microwave oven (DMO) using stannic chloride and stanous chloride as the precursors of tin and thiourea as the precursor of sulfur in ethylene glycol under argon atmosphere. Elemental sulfur and sodium thiosulfate were also tried as precursors of sulfur. The structures, morphologies, compositions, and physical properties of the products were characterized by powder X-ray diffraction (XRD), differential scanning calorimetry, energy dispersive X-ray analysis, transmission electron microscopy, selected area electron diffraction, Raman spectroscopy, and standard electrochemical techniques. The XRD patterns indicate that the as-synthesized product, obtained after microwave irradiation, is crystalline orthorhombic in the case of the SnS phase and amorphous in the case of SnS 2. Heat treatment of this SnS 2 produced a crystalline hexagonal phase. A possible mechanism for the formation of the tin sulfide nanoflakes is proposed herein. The electrochemical performance of these materials as Li-insertion materials was investigated in a number of electrolyte solutions and was found to be highly sensitive to the solution composition. A stable reversible capacity higher than 600 mAh/g could be obtained with SnS electrodes.
AB - A novel and quick method has been developed for the preparation of tin sulfide (SnS and SnS 2) nanoflakes in high yield (≈93%) by a microwave irradiation technique for 10 40 min. The sulfides were synthesized in a simple domestic microwave oven (DMO) using stannic chloride and stanous chloride as the precursors of tin and thiourea as the precursor of sulfur in ethylene glycol under argon atmosphere. Elemental sulfur and sodium thiosulfate were also tried as precursors of sulfur. The structures, morphologies, compositions, and physical properties of the products were characterized by powder X-ray diffraction (XRD), differential scanning calorimetry, energy dispersive X-ray analysis, transmission electron microscopy, selected area electron diffraction, Raman spectroscopy, and standard electrochemical techniques. The XRD patterns indicate that the as-synthesized product, obtained after microwave irradiation, is crystalline orthorhombic in the case of the SnS phase and amorphous in the case of SnS 2. Heat treatment of this SnS 2 produced a crystalline hexagonal phase. A possible mechanism for the formation of the tin sulfide nanoflakes is proposed herein. The electrochemical performance of these materials as Li-insertion materials was investigated in a number of electrolyte solutions and was found to be highly sensitive to the solution composition. A stable reversible capacity higher than 600 mAh/g could be obtained with SnS electrodes.
KW - Electrochemistry
KW - Synthesis
KW - Tin sulfide nanoflakes
UR - http://www.scopus.com/inward/record.url?scp=57349167965&partnerID=8YFLogxK
U2 - 10.1007/s10008-005-0086-7
DO - 10.1007/s10008-005-0086-7
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AN - SCOPUS:57349167965
SN - 1432-8488
VL - 11
SP - 186
EP - 194
JO - Journal of Solid State Electrochemistry
JF - Journal of Solid State Electrochemistry
IS - 2
ER -