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    Controlling the Growth of Ni3S2 Anode with Tunable Sodium Storage

    Year: 2018

    Journal: Adv. Mater. Interfaces, Volume 5, JUN 8

    Authors: Song, Xiaosheng; Li, Xifei; Bai, Zhimin; Yan, Bo; Li, Dejun

    Organizations: National Natural Science Foundation of China [51572194, 51672189]; Fundamental Research Funds for the Central Universities [2652016114]; Tianjin Normal University [52XC1404]; Training Plan of Leader Talent of University in Tianjin

    Keywords: density functional theory; morphology evolution; nickel sulfide; sodium ion batteries; surface treatment

    The influences of acids on the surface of nickel foam and its effect on the growth of nickel sulfide are studied. Treated by sulfuric acid, oxalic acid, and phosphoric acid, three Ni foams are fabricated with different surface states containing different surface roughness and different surface layers with nickel salts. By controlling the reaction conditions, three Ni3S2 morphological structures with nanosheets, clustered nanosheets, and nanoparticles are designed on these preprocessed Ni foams. The applications of these Ni3S2/Ni electrodes for sodium ion batteries are examined in detail. The findings provide a new idea for the control of the solid-liquid reaction interface, which highly affect the morphologies of Ni3S2.
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