Y J Choi et al 2007 Phys. Scr. 2007 62 doi:10.1088/0031-8949/2007/T129/014
Y J Choi1, B S Jung2, D J Lee1, J H Jeong1, K W Kim1, H J Ahn1, K K Cho1 and H B Gu3
Show affiliationsTo prevent the dissolution of lithium polysulfides into liquid electrolyte and to promote the lithium/sulfur redox reaction, nano-sized Al2O3 particles having large specific surface area were added into sulfur electrode. The effects of nano-sized Al2O3 particles on the electrochemical properties of sulfur electrode for lithium/sulfur battery were investigated using CV measurements, charge/discharge tests and ionic conductivity measurements of liquid electrolyte. From the results, the sulfur electrode containing nano Al2O3 particles showed good cycle performance and higher discharge capacity of 660 mAh g−1-sulfur than that of the sulfur electrode without nano Al2O3. It is therefore concluded that the addition of nano-sized Al2O3 particles gives the beneficial effects of preventing the dissolution of lithium polysulfides into liquid electrolyte.
82.45.Yz Nanostructured materials in electrochemistry
82.47.Aa Lithium-ion batteries
Issue T129 (December 2007)
Received 1 March 2007, accepted for publication 7 July 2007
Published 23 November 2007
Y J Choi et al 2007 Phys. Scr. 2007 62
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