A novel and fast method to prepare a Cu-supported α-Sb(2)S(3)@CuSbS(2) binder-free electrode for sodium-ion batteries.
A novel and fast method to prepare a Cu-supported α-Sb(2)S(3)@CuSbS(2) binder-free electrode for sodium-ion batteries.
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一种新型快速制备钠离子电池负载铜α-Sb2S3@CuSbS(2)无粘结剂电极的方法
作者：
硫化锑（Sb2S3）因其低成本和高理论比容量而成为一种很有前景的钠离子电池负极材料。但稳定性差、制备工艺复杂限制了其大规模应用。在此，我们通过简单的闭空间升华（CSS）方法制备了由非晶（α-）Sb2S3和铜锑硫化物（CuSbS2）组成的无粘合剂复合电极。当用作钠离子电池负极时，α-Sb2S3@CuSbS2电极表现出优异的性能，在50 mA g−1的电流密度下，经过50次循环后，放电容量为506.7 mA h g−1。令人满意的电化学性能归因于α-Sb2S3-CuSbS2复合结构和无粘合剂电极结构，它不仅保留了电极的结构稳定性，而且提高了电导率。因此，CSS作为一种可扩展且环保的方法，可以在短短几分钟内生产出无粘合剂电极，展示了其在钠离子电池工业生产中的巨大潜力。这项研究可能为制备无粘合剂商业电极开辟一条途径。硫化锑（Sb2S3）因其低成本和高理论比容量而成为一种很有前景的钠离子电池负极材料。
Antimony sulfide (Sb2S3) is a promising anode material for sodium-ion batteries due to its low cost and high theoretical specific capacity. However, poor stability and a complex preparation process limit its large-scale application. Herein, we prepare a binder-free composite electrode composed of amorphous (α-) Sb2S3 and copper antimony sulfide (CuSbS2) through a simple closed-space sublimation (CSS) method. When applied as the anode in sodium-ion batteries, the α-Sb2S3@CuSbS2 electrode exhibits excellent performance with a high discharge capacity of 506.7 mA h g−1 at a current density of 50 mA g−1 after 50 cycles. The satisfactory electrochemical performance could be ascribed to the α-Sb2S3–CuSbS2 composite structure and binder-free electrode architecture, which not only retain the structural stability of the electrode but also improve the electrical conductivity. Consequently, CSS, as a scalable and environmentally friendly method, can produce a binder-free electrode in just a few minutes, demonstrating its great potential in the industrial production of sodium-ion batteries. This study may open an avenue to preparing binder-free commercial electrodes. Antimony sulfide (Sb2S3) is a promising anode material for sodium-ion batteries due to its low cost and high theoretical specific capacity.
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