N, S co-doped porous carbon with high capacitive performance derived from heteroatom doped phenolic resin

Feng, Liping; Chang, Yunzhen; Song, Hua; Hou, Wenjing; Li, Yanping; Zhao, Yun; Xiao, Yaoming; Han, Gaoyi

doi:10.1016/j.jelechem.2022.116069

Cited by 13 publications

(3 citation statements)

References 63 publications

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“…Figure 2 f clearly shows the bonding configurations of different nitrogen-containing functional groups. The N 1s can be divided into pyridinic nitrogen (N-6), pyrrolic nitrogen (N-5), graphitic nitrogen (N-Q), and oxidized nitrogen by mathematical fitting, with corresponding binding energies of 398.3, 400, 401.5, and 405.6 eV, respectively ( Figure 2 f) [ 32 ]. N-6 and N-5 can enhance the wettability and specific capacitance of porous carbon, while graphitic nitrogen can improve the conductivity [ 33 ].…”

Section: Resultsmentioning

confidence: 99%

Hierarchically Porous Carbon Nanosheets from One-Step Carbonization of Zinc Gluconate for High-Performance Supercapacitors

Tian,

Weng,

Xiao

et al. 2023

IJMS

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Supercapacitors, with high energy density, rapid charge–discharge capabilities, and long cycling ability, have gained favor among many researchers. However, the universality of high-performance carbon-based electrodes is often constrained by their complex fabrication methods. In this study, the common industrial materials, zinc gluconate and ammonium chloride, are uniformly mixed and subjected to a one-step carbonization strategy to prepare three-dimensional hierarchical porous carbon materials with high specific surface area and suitable nitrogen doping. The results show that a specific capacitance of 221 F g−1 is achieved at a current density of 1 A g−1. The assembled symmetrical supercapacitor achieves a high energy density of 17 Wh kg−1, and after 50,000 cycles at a current density of 50 A g−1, it retains 82% of its initial capacitance. Moreover, the operating voltage window of the symmetrical device can be easily expanded to 2.5 V when using Et4NBF4 as the electrolyte, resulting in a maximum energy density of up to 153 Wh kg−1, and retaining 85.03% of the initial specific capacitance after 10,000 cycles. This method, using common industrial materials as raw materials, provides ideas for the simple preparation of high-performance carbon materials and also provides a promising method for the large-scale production of highly porous carbons.

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Section: Resultsmentioning

confidence: 99%

Hierarchically Porous Carbon Nanosheets from One-Step Carbonization of Zinc Gluconate for High-Performance Supercapacitors

Tian,

Weng,

Xiao

et al. 2023

IJMS

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“…7a, N/S-DDPC8 has a larger encircling area than N/S-DDPC6, N/S-DDPC7 and N/S-DDPC9, indicating that N/S-DDPC8 has a higher speci c capacitance. The slight bulge of N/S-DDPC6, N/S-DDPC7, N/S-DDPC8 and N/S-DDPC9 near − 0.2 V results from the Faraday reaction caused by doped N and S elements, thus further proving a double layer electric capacitor and a slight pseudocapacitor [44].…”

Section: Electrochemical Measurementsmentioning

confidence: 92%

High-performance supercapacitors enabled by N/S dual-doped porous carbon and DMO-regulated electrolyte

Zhao,

Wang,

Jiang

et al. 2023

Diamond and Related Materials

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“…For instance, Feng et al prepared phenolic resins from thiourea and tetraethyl orthosilicate, then used the phenolic resins to prepare multi-heteroatom-doped carbon materials with a specific surface area (SSA) of 3,599.0 m 2 g −1 . The specific capacitance was 461.7 F g −1 at 0.1 A g −1 current density ( Feng et al, 2022 ). Li et al developed a cage-like lignin-based phenolic resin using a direct spray drying method.…”

Section: Introductionmentioning

confidence: 99%

Self-doped N, S porous carbon from semi-coking wastewater-based phenolic resin for supercapacitor electrodes

Yan

Wang²,

Wang³

et al. 2022

Front. Chem.

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Contamination of phenolic compounds has devastating effects on the environment. Therefore, its harmless treatment and recycling have received extensive attention. Herein, a novel method for preparing N-S doped phenolic resin (NSPR) from phenols, N and S groups in semi-coking wastewater, and formaldehyde are developed. The KOH is consequently incorporated into the NSPR through simultaneous carbonization and activation in a single step to produce porous carbon material (NSPC). The as-obtained NSPC exhibits a high specific capacitance of 182 F g−1 at 0.5 A g−1, a high energy density of 9.1 Wh kg−1 at a power density of 0.15 kW kg−1, and remarkable cycling stability in aqueous KOH electrolyte. This outstanding electrochemical performance is attributed to its ultrahigh specific surface area (SSA, 2,523 m2 g−1), enormous total pore volume (Vt, 1.30 cm3 g−1), rational pore structure, and N-S heteroatom self-doping (0.76 at% N and 0.914 at% S), which ensures adequate charge storage, rapid electrolyte ion diffusion, and contributed pseudo-capacitance. This work not only provides a facile method for transforming phenolic wastewater into high-value products but also offers a cost-effective and high-performance porous carbon material for supercapacitors.

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N, S co-doped porous carbon with high capacitive performance derived from heteroatom doped phenolic resin

Cited by 13 publications

References 63 publications

Hierarchically Porous Carbon Nanosheets from One-Step Carbonization of Zinc Gluconate for High-Performance Supercapacitors

Hierarchically Porous Carbon Nanosheets from One-Step Carbonization of Zinc Gluconate for High-Performance Supercapacitors

High-performance supercapacitors enabled by N/S dual-doped porous carbon and DMO-regulated electrolyte

Self-doped N, S porous carbon from semi-coking wastewater-based phenolic resin for supercapacitor electrodes

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