SnS₂ Urchins as Anode Material for Lithium-ion Battery

Abstract

SnS₂ urchins self-assembled by one dimensional nanorods, being different from the two dimensional flakes, were synthesized by a facile method to work as an anode material in lithium-ion battery. The SnS₂ urchins displayed a stable capacity of 600 mAh g⁻¹ at the current density of 100 mA g⁻¹ after 50 cycles. The SnS₂ urchins showed better cyclic performance and rate capacity compared with SnS₂ flakes. The improved performance was ascribed to the three dimensional structures which can decrease the volume expansion/contraction of SnS₂ during cycling; the fatal drawbacks of SnS₂ were thus mitigated. The facile and economic preparation route may find suitable application to industrial mass production.