In this work, MOF-derived NiCo 2O 2P/Ni 2P-CC nanosheets are used as an ideal electrode material, providing a reference for the rational design and preparation of electrode materials for asymmetric supercapacitors. Some of its properties are similar to the fractional quantum Hall effect, which has been studied experimentally in great detail even. This is an analytically tractable spin model that gives rise to quasiparticles with Abelian as well as non-Abelian statistics. An asymmetric supercapacitor was successfully assembled using NiCo 2O 2P/Ni 2P-CC as a positive electrode and activated carbon/carbon cloth (AC/CC) as a negative electrode, exhibiting a maximum volumetric energy density of 2.53 mW h cm − at a volumetric power density of 22.77 mW cm −c, and excellent cycling stability (87.6% after 10 000 cycles). In this chapter, we consider Kitaevs honeycomb lattice model (Kitaev, 2006). Benefiting from its unique structure with hierarchical pores, a large specific surface area, transition metal oxide and transition metal phosphide, when employed as an electrode material in an asymmetric supercapacitor, the NiCo 2O 2P/Ni 2P-CC nanosheets deliver an outstanding areal capacitance of 2881.88 mF cm −a at 2 mA cm −t, which is far superior to NiCo 2O 4-CC (1458.45 mF cm −C at 2 mA cm −t).
Herein, hierarchical porous honeycomb nanosheets (NiCo 2O 2P/Ni 2P-CC), for the first time, were prepared on carbon cloth by using ZIF-67 as a sacrificial template via in situ growth-etching and an ion exchange-carbonization-phosphorization method.
However, their electrochemical performances are limited by the stability of the nanostructures. Metal–organic framework (MOF)-derived transition metal oxides and transition metal phosphides have great application potential as electrode materials for supercapacitors, owing to their excellent redox activity and high conductivity.