Superior Na-ion storage properties of high aspect ratio SnSe nanoplates prepared by a spray pyrolysis process

• DOI: 10.1039/c6nr02983c
• Publication Date: 2016-05-12T09:34:46Z
• Authors: Gi Dae Park; Jong-Heun Lee; Yun Chan Kang
• Keywords: Stoichiometry; Metalloid; Spray pyrolysis

SnSe nanoplates with thin and uniform morphology are prepared by one-pot spray pyrolysis, examined as anode materials for Na-ion batteries. During the pyrolysis process, metallic Se Sn from SeO2 SnO2, respectively, under a reducing atmosphere. Metallic metalloid Se, melting points of 232 221 °C, form melted Sn–Se mixture, which reacts exothermally to nanocrystals. Several these nanocrystals grown simultaneously forming micron-sized powder. Complete elimination excess amount H2Se gas, results in aggregation-free nanoplates. The aspect ratio is high 11.3. discharge capacities nanoplates, solutions containing 100, 400, 800% stoichiometric content needed SnSe, 407, 558, 211 mA h g−1, after 50 cycles at constant current density 0.3 A g−1; their capacity retentions calculated second cycle onwards 77, 60%, respectively. phase pure show good cycling rate performances storage.