Pb₃O₄ type antimony oxides MSb₂O₄ (M = Co, Ni) as anode for Li-ion batteries

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• 作者：A.K. Jibin^a ; M.V. Reddy^b ; G.V. Subba Rao^b ; U.V. Varadaraju^a ; ^{varada@iitm.ac.in} ; B.V.R. Chowdari^b
• 关键词：Lithium storage ; Antimony ; Anode ; Alloying
• 刊名：Electrochimica Acta
• 出版年：2012
• 期刊代码：30_00134686
• 类别：ch
• 出版时间：1 June, 2012
• 卷：71
• 期：Complete
• 页码：227-232
• 文件大小：1084 K

摘要

Polycrystalline samples of isostructural MSb₂O₄ (M = Co, Ni) have been prepared by solid state synthesis and lithium-storage is investigated as possible anode materials for lithium-ion batteries. The reaction mechanism of lithium with MSb₂O₄ (M = Co, Ni) is explored by galvanostatic cycling, cyclic voltammogram and ex situ studies. Both CoSb₂O₄ and NiSb₂O₄ exhibit similar electrochemical behavior and show reversible capacity of 490 and 412 mAh g^鈭? respectively in the first cycle. Reversible alloying de-alloying of Li_xSb takes place in an amorphous matrix of M (Co, Ni) and Li₂O during electrochemical cycling.