Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5148702 | Journal of Power Sources | 2017 | 6 Pages |
Abstract
Experimental results from electrochemical characterizations and ex-situ X-ray diffraction (XRD) of the Sn4P3 anode upon cycling reveal that Sn agglomeration from the Sn4P3 particles plays a major role in the fast capacity fading of the Sn4P3 anode for sodium-ion batteries. TiC is demonstrated to be an effective additive to enhance the cycle stability of Sn4P3 by suppressing Sn agglomeration during cycling. Sn4P3/30-wt%TiC composite delivers a stable capacity of 300 mAh gâ1 or 700 Ah Lâ1 over 100 cycles at current density of 100  mA gâ1. The high density TiC (4.93 g cmâ3), as compared to conventional carbon based additives, makes it attractive for achieving higher volumetric capacity of the anode.
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Authors
Wenhui Wang, Jiaolong Zhang, Denis Y.W. Yu, Quan Li,