Yu Xianbo, Zhou Jiaojiao, Li Qin, Zhao Wen-Na, Zhao Shihang, Chen Hongmei, Tao Kai, Han Lei
State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo 315211, China.
Dalton Trans. 2019 Jun 25;48(25):9057-9061. doi: 10.1039/c9dt01466g.
Bismuth sulfide (Bi2S3) with a lamellar structure has emerged as a promising negative electrode material for supercapacitors (SCs) due to its high theoretical specific capacity. Meanwhile, the improvement of electrochemical properties strongly depends on the size, shape and morphologies of Bi2S3 nanomaterials. Herein, the hierarchical Bi2S3 nanorod-stacked hollow microtubes are self-assembled through a facile self-sacrificing template strategy from bismuth-based metal-organic framework microprisms. Benefiting from the unique structures with a large specific surface area (54.3 m2 g-1), the as-prepared Bi2S3 exhibits an ultrahigh specific capacity (532 C g-1 at 1 A g-1) as a negative electrode for SCs, outperforming other reported Bi2S3 materials.
具有层状结构的硫化铋（Bi2S3）因其高理论比容量而成为一种很有前景的超级电容器（SCs）负极材料。同时，电化学性能的改善很大程度上取决于Bi2S3纳米材料的尺寸、形状和形貌。在此，通过一种简便的自牺牲模板策略，从铋基金属有机框架微棱镜自组装出分层的Bi2S3纳米棒堆叠空心微管。得益于具有大比表面积（54.3 m2 g-1）的独特结构，所制备的Bi2S3作为SCs负极表现出超高的比容量（在1 A g-1时为532 C g-1），优于其他已报道的Bi2S3材料。
