Tin phosphide as a promising anode material for Na-ion batteries.

Kim, Youngjin; Kim, Yongil; Choi, Aram; Woo, Sangwon; Mok, Duckgyun; Choi, Nam-Soon; Jung, Yoon Seok; Ryu, Ji Heon et al. · Adv Mater · 2014

basic_science · Level V

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Abstract

Sn4 P3 is introduced for the first time as an anode material for Na-ion batteries. Sn4 P3 delivers a high reversible capacity of 718 mA h g(-1), and shows very stable cycle performance with negligible capa-city fading over 100 cycles, which is attributed to the confinement effect of Sn nanocrystallites in the amorphous phosphorus matrix during cycling.