Co(II)-Based 2D Coordination Polymer Featuring Energy Storage and Detection of Aqueous Inorganic Anions

Herein, we have synthesized a Co(II)-based 2D coordination polymer [Co(5-AIA)(Imidazole)] _n (CP1) (AIA = 5-aminoisophthalic acid) via a solvothermal approach. SCXRD (single-crystal X-ray diffraction) was utilized to analyze the crystal structure of fabricated CP1. Moreover, PXRD, TGA, FTIR, and SEM analyses were done to identify the structural features of fabricated CP1. The standard rod depiction of CP1 exhibits hxl underlying net topology, and the hydrogen-bonded network depicts hcb underlying net topology. The fluorescence detection of inorganic anions using CP1 showed a promising result of 90.3% for MnO₄ ^-. The electrochemical analysis of CP1 was done under a basic medium utilizing a 3 M KOH electrolyte through CV (cyclic voltammetry) and GCD (galvanic charge-discharge) techniques which show a 134.75 F g^-1 specific capacity at a current density of 1 A g^-1. Furthermore, CP1 shows a 94% retention capacity after 2500 cycles at a 20 A g^-1 current density.