Electrochemical properties of Cu6Sn5 alloy powders directly prepared by spray pyrolysis

Seo Hee Ju, Hee Chan Jang, Yun Chan Kang

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33 Citations (Scopus)

Abstract

Spherical shape Cu-Sn alloy powders with fine size for lithium secondary battery were directly prepared by spray pyrolysis. The mean size and geometric standard deviation of the Cu-Sn alloy powders prepared at a temperature of 1100 °C were 0.8 μm and 1.2, respectively. The powders prepared at a temperature of 1100 °C with low flow rate of carrier gas as 5 l min-1 had main XRD peaks of Cu6Sn5 alloy and copper-rich Cu3Sn alloy phases. Cu and Sn components were well dispersed inside the submicron-sized alloy powders. The discharge capacities of the Cu6Sn5 alloy powders prepared at a flow rate of 5 l min-1 dropped from 485 to 313 mAh g-1 by the 20th cycle at a current density of 0.1 C. On the other hand, the discharge capacities of the Cu-Sn alloy powder prepared at a flow rate of 20 l min-1 dropped from 498 to 169 mAh g-1 by the 20th cycle at a current density of 0.1 C.

Original languageEnglish
Pages (from-to)163-168
Number of pages6
JournalJournal of Power Sources
Volume189
Issue number1
DOIs
Publication statusPublished - 2009 Apr 1

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Keywords

  • Alloy powder
  • Anode materials
  • Lithium secondary battery
  • Spray pyrolysis

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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