Transition metal oxides for high performance sodium ion battery anodes

Jiang, Yinzhu, Hu, Meijuan, Zhang, Dan, Yuan, Tianzhi, Sun, Wenping, Xu, Ben and Yan, Mi (2014) Transition metal oxides for high performance sodium ion battery anodes. Nano Energy, 5. pp. 60-66. ISSN 2211-2855

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Abstract

Sodium-ion batteries (SIBs) are attracting considerable attention with expectation of replacing lithium-ion batteries (LIBs) in large-scale energy storage systems (ESSs). To explore high performance anode materials for SIBs is highly desired subject to the current anode research mainly limited to carbonaceous materials. In this study, a series of transition metal oxides (TMOs) is successfully demonstrated as anodes for SIBs for the first time. The sodium uptake/extract is confirmed in the way of reversible conversion reaction. The pseudocapacitance-type behavior is also observed in the contribution of sodium capacity. For Fe2O3anode, a reversible capacity of 386 mAh g-1at 100 mA g-1 is achieved over 200 cycles; as high as 233 mAhg-1is sustained even cycling at a large current-density of 5 A g-1.

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