Sb_2S_3纳米棒的制备及其储锂性能测试

Synthesis and Li- storage Performance Test of Sb_2S_3 Nanorods

采用L-半胱氨酸盐酸盐(L-Cys·HCl)辅助乙醇热成功制备Sb_2S_3纳米棒,并采用XRD、SEM、循环伏安法和恒电流充放电技术对其进行了物理及电化学性能表征。结果表明:所制备得到的Sb_2S_3材料表现出良好的电化学储锂性能,在100 m A·g^(-1)电流密度下,首次可逆比容量为823 m Ah·g^(-1),30次循环后,保持在622 m Ah·g^(-1),容量保持率为76%;当电流密度提高到500 m A·g^(-1)时,可逆比容量也在400 m Ah·g^(-1)以上。

Sb_2S_3 nanorods were synthesized successfully by L- cysteine hydrochloride- assisted solvothermal treatment,and were then characterized by X- ray diffraction,scanning electron microscopy,cyclic voltammetry and galvanostatic charge-discharge technique. The results showed that prepared Sb_2S_3 materials exhibited good electrochemical Li- storage performance：a high initial reversible specific capacity of 803 m Ah·g^（-1）at a rate of 100 m A·g^（-1）,a good cyclability of above 614 m Ah·g^（-1）at a rate of 100 m A·g^（-1）after 30 cycles,and a good rate capability of 400 m Ah·g- 1at a rate of 500 m A·g^（-1）.