In Situ Synthesis of Nitrogen- and Sulfur-Enriched Hierarchical Porous Carbon for High-Performance Supercapacitor

Abstract

In this work, we present a simple and facile method for the nitrogen (N)- and sulfur (S)- doped porous three-dimensional (3D) spongelike carbon materials via direct pyrolysis of N and S containing polymer N,N′-methylene-bis-acrylamide cross-linked poly­(acrylamide-co-2-acrylamido-2-methyl-1-propanesulfonic acid) at varying temperatures under inert atmosphere. The obtained nitrogen- and sulfur-doped porous carbons (NSPCs) possess 3D hierarchical porous structure and contain a significantly high amount of N and S species. The concurrent incorporation of N and S successfully modified the surface properties of carbon materials and lead to enhanced capacitive performance. The presented NSPC exhibits specific capacitance of 230 F g–1 at a current density of 1 A g–1 and showed excellent cycling stability, depicting a promising material for energy storage devices.

Bifunctional biomass-derived N, S dual-doped ladder-like porous carbon for supercapacitor and oxygen reduction reaction

“…3f. Overall, the [33,47,48]. The incorporated sulfur species into the carbon framework could influence the surface charge and offer up pseudocapacitive effect [49].…”

Tailoring Hierarchically Porous Nitrogen‐, Sulfur‐Codoped Carbon for High‐Performance Supercapacitors and Oxygen Reduction

“…Few groups sparked enthusiasm in the direct synthesis of hierarchically porous carbon materials with prominent activity derived from heteroatom doping, such as hydrothermal reaction, [ 21,22 ] carbonization of polymer, [ 23,24 ] and chemical modification. [ 25,26 ] Mehare et al [ 27 ] reported the N‐ and S‐codoped porous 3D sponge‐like carbon materials via synthesizing the poly(acrylamide‐ co ‐2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid‐ co ‐ N , N ′‐methylene‐ bis ‐acrylamide) (poly(AM‐ co ‐AMPS‐ co ‐MBAM)) (acrylamide (AM), cross‐linked (co), 2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid (AMPS), N,N′‐methylene‐bis‐acrylamide (MBAM)) and the subsequent carbonization. It exhibits high mass capacitance (230 F g −1 at 1 A g −1 ) and >10 000 cycle stability at 10 A g −1 , which is attributed to high N and S contents with hierarchical porous structures.…”

Integrating Effect of Surface Modification of Microporous Carbon by Phosphorus/Oxygen as well as the Redox Additive of p‐Aminophenol for High‐Performance Supercapacitors

“…The semicircular radius of PC‐10‐10 in the high‐frequency region is smaller than that of Blank‐C. It indicates that the charge transfer resistance of the electrode material is smaller, [ 63 ] primarily due to the effective change of wettability after P/O‐doping. The specific capacitance/rate performance also shows the same trend, and compared with the reported redox additive for SCs, PC‐10‐10 provides higher energy density even at high discharge rate (Figure 6d).…”