An environmentally friendly process to derive N/O/S-codoped porous carbon from biomass waste with high yield for high performance supercapacitor

A comparative study on porous activated carbon derived from waste biomass with varying oxygen functionalities as supercapacitor electrodes

“…For example, lignin‐rich biomasses are rich in oxygen functionalities and may act as natural oxygen dopants in the corresponding AC and might improve electronic conductivity, surface wettability, and electrochemical reactivity at the carbon electrode/electrolyte interface for accessing electrolyte ion and favor the charge accumulation capacity 24 . This is consistent with higher specific capacitances exhibited by carbonaceous materials doped with heteroatoms, owing to higher charge densities in dopants of higher electronegativity than carbon 25 . These studies are mostly based on nitrogen‐doped carbon materials.…”

“…24 This is consistent with higher specific capacitances exhibited by carbonaceous materials doped with heteroatoms, owing to higher charge densities in dopants of higher electronegativity than carbon. 25 These studies are mostly based on nitrogen-doped carbon materials. While supercapacitor electrodes made with oxygen-functionalized carbonaceous materials are less studied.…”

K-birnessite-MnO2/hollow mulberry-like carbon complexes with stabilized and superior rate performance for aqueous magnesium ion storage

“…To demonstrate the practical application potential of K-MnO 2 /HMC//AC, we calculated the energy density and power density of MHS (ESI†). 68 The maximum energy density obtained is 111.1 W h kg −1 at a power density of 505 W kg −1 , surpassing the energy density of 84.7 W h kg −1 at a power density of 502.4 W kg −1 for K-MnO 2 (Fig. 5g).…”

MnO2 Nanoparticle‐Loaded Self‐Doped (N/O) Porous Carbon Derived from Orychophragmus Violaceus for Application as a High‐Performance Supercapacitor

“…C 1s of OPC can be deconvolved into three peaks located at 284.01 eV, 285.78 eV, 288.27 eV, which are related to the sp 2 C=C bond of graphitic carbon, CÀ N and C=O bands, where C=C bond is 56.68 % (Table S1). [22,23] C1s of OPC@MnO 2 32 can be divided into three peaks: C=C (283.75 eV), CÀ N (285.42 eV), and C=O (287.48 eV), with the C=C bond accounting for 68.83 % (Table S2). This reflects the dominance of C=C bond in the carbon matrix of OPC and OPC@MnO 2 32, reflecting the high degree of carbonization of the skeleton and is advantageous for the rapid transfer of electrons in the carbon skeleton.…”