Enhanced Electrochemical Performances of Hollow-Structured N-Doped Carbon Derived from a Zeolitic Imidazole Framework (ZIF-8) Coated by Polydopamine as an Anode for Lithium-Ion Batteries

Doping heteroatoms such as nitrogen (N) and boron (B) into the framework of carbon materials is one most efficient methods to improve electrical performance carbon-based electrodes. In this study, N-doped has been facilely synthesized using a ZIF-8/polydopamine precursor. The polyhedral structure ZIF-8 effective surface-coating capability dopamine enabled formation with hollow structure. polyhedron served sacrificial template for structures, participated donor element. When compared ZIF-8-derived carbon, HSNC electrode showed an improved reversible capacity approximately 1398 mAh·g?1 after 100 cycles, excellent cycling retention at voltage range 0.01 3.0 V current density 0.1 A·g?1.