关键字：NANOCAGES

摘要：Co/Ni-based hydroxide phosphate (CNHP) hollow polyhedrons with multiple-shell are synthesized by a cobalt-nickle layered double hydroxide (Co/Ni-LDH) coating and step-by-step phosphate etching strategy with ZIF-67 dodecahedron as templates. Through rational controlling the LDH coating and Na3PO4 etching time, double shells Co/Ni-(PO4)(x)(OH)(y) hollow polyhedron (DS-CNHP) and triple shells Co/Ni-(PO4)(x)(OH)(y) hollow polyhedron (TS-CNHP) are successfully constructed. The as-obtained TS-CNHP presents a high specific capacitance of 1506 F g(-1) at the current density of 1 A g(-1), and excellent ratio performance of maintaining 68% initial capacitance from 1 to 10 A g(-1). Furthermore, a hybrid TS-CNHP//AC supercapacitor device is fabricated, and a high energy density of 34.4 Wh-kg(-1) is achieved at the power density of 0.375 kW kg(-1). Therefore, the step-by-step strategy in this work can provide valuable guidance to construct MOFs derived multiple-shell hollow structures with wide applications.

卷号：304

期号：

是否译文：否