Large‐scale production of nitrogen‐ and oxygen‐containing activated carbon microspheres for supercapacitors

Abstract

A main issue in the production of robust supercapacitors is the creation of efficient and cost‐effective electrodes. We present here the realization of a kind of nitrogen‐ and oxygen‐containing activated carbon microspheres made from divinylbenzene, diallyl phthalate, and acrylonitrile monomers, which can be produced on a large scale for use in supercapacitors. The supercapacitor's performance is optimized by adjusting the carbonization temperature of the microspheres. Our preliminary result shows that the supercapacitor displays a maximum capacitance of 300 F/g at the current density of 1.0 A/g and retains ~82% of the capacitance after 10,000 charge–discharge cycles.

Electrochemical properties depending on heteroatom and surface property of various carbon sources/NiO composites as supercapacitor electrode

“…According to the first findings, the supercapacitor had a maximum capacitance of 300 F/g at 1.0 A/g of current density and retained 82% of its capacitance after 10,000 charge–discharge cycles. [ 14 ]…”

“…According to the first findings, the supercapacitor had a maximum capacitance of 300 F/g at 1.0 A/g of current density and retained 82% of its capacitance after 10,000 chargedischarge cycles. [14] At various calcination temperatures, starch-stabilized nickel oxide/carbon nanocomposites were created by Vijayakumar et al An ideal calcination temperature of 500 C was discovered. The sample had 644 F/g as its specific capacitance at a 2 mV/s scan rate.…”

Electrochemical codeposited polypyrrole–tungsten oxide composite materials with wide potential windows

“…[5] Meanwhile, the supercapacitor of the same electrical energy storage equipment can compensate for this problem. [1,4,[6][7][8] However, the loading mass of the supercapacitor electrode makes it difficult to commercialize. [5,9,10] Therefore, the development of large loading mass electrode materials with ideal specific capacitance and energy density becomes highly desirable.…”