Fructose 1,6-bisphosphate trisodium salt as a new organic phosphorus source for synthesis of nanoporous amorphous nickel phosphate microspheres electrode materials in supercapacitors

摘要

Nanoporous amorphous nickel phosphate (Ni-3(PO4)(2)) with microsphere structures have been investigated for applications as electrode material owing to their excellent electrochemical performance. However, Ni-3(PO4)(2) are usually prepared traditionally from inorganic phosphorus. Herein, we report a new synthetic strategy by using fructose 1,6-bisphosphate trisodium salt (FBP) as an organic phosphorus source and a porogen. The formation of nanoporous amorphous Ni-3(PO4)(2 )microspheres structures, as well as the effect of applied calcination temperatures on the morphology and crystallinity of the final phosphate materials, is systematically researched. According to data, our amorphous Ni-3(PO4)(2)material possess a superior specific capacitance of 1040 Fg(-1) at the current density of 0.5 Ag-1 and a favourable rate performance, as compared to various phosphate nanomaterials reported previously. Furthermore, the Ni-3(PO4)(2) electrodes fabricated in this work are low-cost, efficient, and composed of naturally abundant materials, becoming a potential energy storage material. (C) 2019 Elsevier B.V. All rights reserved.