In-situ synthesis of highly nitrogen, sulfur co-doped carbon nanosheets from melamine-formaldehyde-thiourea resin with improved cycling stability and energy density for supercapacitors

Wang, Min; Líu, Hao; Zhai, Duo Duo; Chen, Xiang Ying; Zhang, Zhong Jie

doi:10.1016/j.jpowsour.2019.01.092

Cited by 88 publications

(25 citation statements)

References 69 publications

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“…It was found that NS‐a‐PCM‐1000 had pronounced improvement in energy and power densities compared to the nitrogen‐ and sulfur‐doped metal‐free carbon materials reported in literatures. [ 16,29,31–37 ] When the P T is 250 W kg −1 , the E T can reach as high as 17.3 Wh kg −1 . In addition, it maintains 6.8 Wh kg −1 even at a high P T of 25 kW kg −1 .…”

Section: Resultsmentioning

confidence: 99%

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

Yang

Chen

et al. 2020

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Heteroatom‐doped carbon materials are intensively studied in supercapacitors and fuel cells, because of their great potential for sustainably bearing on the energy crisis and environmental pollution. Although enormous efforts are put in material perfection with a hierarchically porous microstructure, the simultaneous optimization of both porous structures and surface functionalities is hard to achieve due to inevitable concurrent dopant leaching effect and structural collapse under required high pyrolysis temperature. In this study, an in situ dehalogenation polymerization and activation protocol is introduced to synthesize nitrogen‐ and sulfur‐codoped carbon materials (NS‐PCMs) with hierarchical pore distribution and abundant surface doping, which endows them with good conductivity, abundant accessible active sites, and efficient mass transport. As a result, the as‐prepared carbon materials (NS‐a‐PCM‐1000) show an excellent mass specific capacitance of 461.5 F g−1 at a current density of 0.1 A g−1, long cycle life (>23 k, 10 A g−1), and high device energy and power density (17.3 Wh kg−1, 250 W kg−1). Significantly, NS‐a‐PCM‐1000 also exhibits one of the highest oxygen reduction reaction activities (onset potential of 1.0 V vs reversible hydrogen electrode) in alkaline media among all reported metal‐free catalysts.

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Section: Resultsmentioning

confidence: 99%

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

Yang

Chen

et al. 2020

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“…5a-c, the XPS survey spectra indicates that there are three primary peaks at around 284, 400, 532 eV, and two weak peaks at around 168 and 230 eV, which were assigned to C 1s, N 1s, O 1s, S 2p and S 2s, respectively. [33][34][35] These results further indicate that the S and N atoms have been incorporated into CF. Fig.…”

Section: Resultsmentioning

confidence: 86%

“…The peaks located at 166.7, 167.9 and 168.9 eV correspond to sulfur oxide C-SO x -C (x ¼ 1-4). 33,34,42 Thiophene-S provides additional delocalized electrons on the conjugated backbones of carbon, making for enhanced conductivity. Sulfur oxide (C-SO x -C) can take part in the faradaic reactions and create plenty of reversible pseudo-sites, which is in favor of the improvement of the capacitance.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical performance of activated carbon fiber with hydrogen bond-induced high sulfur/nitrogen doping

Ruan

Xie

2020

RSC Adv.

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“…In contrast to most of the previously developed carbon‐based symmetrical SCs in aqueous solution electrolytes, our MTPC‐0.2‐based symmetrical SCs also exhibit remarkable E M (Figure 4(d)). 24,31,42–53 …”

Section: Resultsmentioning

confidence: 99%

Poly(vinyl alcohol)‐assisted preparation of melamine resin‐derived thick plate‐like porous carbon for high‐performance all‐solid‐state supercapacitors

Liu

Niu

et al. 2021

J of Applied Polymer Sci

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A simple and efficient approach derived from melamine formaldehyde (MF) resin was explored to synthesize porous thick plate‐like carbon (TPC) using poly(vinyl alcohol) (PVA) as reagent and dispersant. Ultra‐large lateral dimension of over 100–150 μm is achieved with high nitrogen (12.4 at%)/oxygen (10.8 at%) content after MF prolysis at 700°C. The introduction of PVA provides abundant micro and mesopores inside TPC and the folded layered structure increases the specific surface area both of which are beneficial to improve the electrochemical properties of the electrode. The optimized TPC (MTPC‐0.2) shows remarkable rate capability as the current densities increased from 0.5 A/g (409.3 F/g) to 20 A/g (330.0 F/g). Further, the all‐solid‐state supercapacitors built from two identical MTPC‐0.2 electrodes delivers dramatically improved volumetric specific capacitance (8.6 F/cm3 at 1.2 mA/cm2) and volumetric energy density (1.20 at 21.42 mW/cm3) based on the total volume of device.

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In-situ synthesis of highly nitrogen, sulfur co-doped carbon nanosheets from melamine-formaldehyde-thiourea resin with improved cycling stability and energy density for supercapacitors

Cited by 88 publications

References 69 publications

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

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

Electrochemical performance of activated carbon fiber with hydrogen bond-induced high sulfur/nitrogen doping

Poly(vinyl alcohol)‐assisted preparation of melamine resin‐derived thick plate‐like porous carbon for high‐performance all‐solid‐state supercapacitors

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