High Performance Hydroxide Zinc Carbonate Composite for Supercapacitors

Abstract

Energy density and production cost for high-performance electrode materials are the main challenge for the capacitive storage technology. In this paper, novel Hydroxide Zinc Carbonate (Zn 4 CO 3 (OH) 6 ·H 2 O, HZC) catalyst layers, which are composed of irregular stagger arrangement nanosheets, have been synthesized successfully on foam Ni from inorganic precursors by a feasible in situ hydrothermal method. Measured by electrochemical tests as electrode materials for supercapacitors, the HZC@Ni foam show high specific capacitance (1329.2 F•g −1 at 1 A•g −1 and 882.8 F•g −1 at 10 A•g −1 , respectively). These results show that the HZC@Ni foam could be a potential electrode material for supercapacitors. These encouraging results make these low-cost and eco-friendly materials promising for energy storage application.

Exploring Impact of Various Operating Parameters on the Specific Capacitance at the Glassy Carbon/H2SO4 Interface: A Comparative Analysis Using Electrochemical Characterization

“…[1] Among these devices, the supercapacitor has attracted more attention due to its wide range of applications, notably in the fields of electric vehicles, space equipment, mobile electronic devices, and many other common electronic devices. [2][3][4] In supercapacitors, the specific capacitance is primarily associated with the formation of an electric double layer (EDL) at the electrode/electrolyte interface. Additionally, for certain materials, pseudo-capacitance resulting from faradic processes can contribute significantly to the overall specific capacitance.…”

“…That is why intensive research efforts have been undertaken in recent years to advance electricity storage technologies [1] . Among these devices, the supercapacitor has attracted more attention due to its wide range of applications, notably in the fields of electric vehicles, space equipment, mobile electronic devices, and many other common electronic devices [2–4] . In supercapacitors, the specific capacitance is primarily associated with the formation of an electric double layer (EDL) at the electrode/electrolyte interface.…”

Fabrication of tunable band gap carbon based zinc nanocomposites for enhanced capacitive behaviour

“…Zinc (Zn) is a transition metal which forms oxides and hydroxides with various elements. Zn-based nanocomposites can be used as an electrode material for supercapacitors because they have excellent electrochemical properties and are inexpensive [28,29]. To remove toxic gases, zinc carbonate compounds are used in respirators [30].…”

Study on Capacitance of Zn-Based Electrode in Redox Electrolyte System

“…Hydroxide zinc carbonate composite electrode (HZC) has been synthesized in our previous studies, which showed novel electrochemical activity in high concentration KOH electrolyte [9]. However, higher concentration of KOH will undoubtedly increase the corrosion of electrodes and equipment, which is unfa- Active carbon (AC, BP2000), acetylene black and PTFE mixed together with mass proportion of 8:1:1, using ethanol as dispersant.…”