Mixed-metal hydroxide Coated on Ni Foam For High Performance Supercapcitor

Abstract

In this work we have studied a novel supercapacitor electrode made out of a mixed transition metal hydroxide grown on Ni foam to combat this problem The mixed transition metal hydroxide Ni-Mn-Co(OH)2 was synthesized using a one-pot synthesis involving hydrothermal treatment We show that simply varying the precursor concentration would lead to the formation of Ni-Mn-Co(OH)2 nanostructures having different morphologies The resulting Ni-Mn-Co(OH)2 provides more oxidation states that can participate in the electron transfer than monoxide Several material characterizations and electrochemical tests were performed Moreover we demonstrate that the novel electrode gives very excellent specific capacitance of 2 286 F/g and stability after 2 000 cycles in three electrode system

Date of Award	2019
Original language	English
Supervisor	Jyh-Ming Ting (Supervisor)