High-yield and nitrogen self-doped hierarchical porous carbon from polyurethane foam for high-performance supercapacitors

Zhou, Xiaoli; Zhu, Liyao; Yang, Yue; Xu, Lijie; Qian, Xiujuan; Zhou, Jie; Dong, Weiliang; Jiang, Min

doi:10.1016/j.chemosphere.2022.134552

Cited by 31 publications

(11 citation statements)

References 69 publications

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“…42 The presence of these O-containing groups can strengthen the hydrophilicity of the carbon material in the aqueous electrolyte, thus facilitating the rapid entry of electrolyte ions into the internal structure of the pores. 43 The three peaks (Figure 3d) located at 398.6, 400.2, and 401.9 eV in the high-resolution N 1s spectra correspond to pyridine-N (N-6, 17.7%), pyrrolic-N (N-5, 55.0%), and quaternary/oxidized-N (N-Q/N-X, 27.3%), respectively. 26,44 Considering that pyridine-N holds negatively charged lone electron pairs, it can be involved in the reaction with the pseudocapacitance of electrolyte ions in acidic or alkaline electrolytes, generating the pseudocapacitance.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Construction of N, O Codoped Petal-like Hierarchical Porous Carbon with an Ultrahigh Specific Surface from Waste Bamboo for High-Performance Supercapacitors

Qiu

Zhang

Zhao

et al. 2022

Ind. Eng. Chem. Res.

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Considering the problems of environmental pollution and treatment costs generated by renewable waste biomass on a global scale, the development of high-performance electrodes utilizing plentiful natural waste biomass as sustainable precursors is essential to facilitate the practical application of supercapacitors. Hence, we develop a facile and efficient method to construct waste bamboo shavings into petal-like hierarchical porous carbon electrode materials with an ultrahigh specific surface area and N, O codoped interfaces through H 3 PO 4 -catalyzed hydrothermal pretreatment combined with coactivation by KOH/melamine. The effects of optimal regulation of pore structure and surface modification (heteroatom doping) on the superior electrochemical properties of carbon materials are investigated in depth. The derived carbon materials presenting an excellent potential for practical applications of supercapacitors are mainly attributed to their large specific surface area (3392 m 2 g −1 ), prominent pore volume (2.081 m 3 g −1 ), and petal-like hierarchical porous structure with abundant N, O content, which results in rapid ion diffusion and adequate electrical charge storage as well as contributed pseudocapacitance. 5-BHPC-700-4 exhibits attractive electrochemical properties in a 6.0 M KOH electrolyte, including a delightful capacitance (501.6 F g −1 at 0.5 A g −1 in a three-electrode system) and superior cycling stability (94.2% capacitance retention after 10,000 cycles at 5.0 A g −1 ). The assembled symmetrical supercapacitor device achieves an impressive energy density of 15.3 Wh kg −1 at a power density of 290 W kg −1 . This work provides a valuable reference for the design and preparation of biomass-based hierarchical porous carbon with outstanding supercapacitor performance and low cost.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Construction of N, O Codoped Petal-like Hierarchical Porous Carbon with an Ultrahigh Specific Surface from Waste Bamboo for High-Performance Supercapacitors

Qiu

Zhang

Zhao

et al. 2022

Ind. Eng. Chem. Res.

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“…The supposition is consistent with the XPS results. The S 2p peaks at 161.7 eV and 168.9 eV can be attributed to the S 2p 3/2 and S 2p 1/2 orbitals of CoS x [34,35], respectively, in Figure 6d. In Figure 6e, C 1s uncovers four typical binding energy peaks at 284.6, 285.2, 286.3 and 288.5 eV, corresponding to graphite carbon phase (sp 2 C-C), sp 3 hybrid carbon (sp 3 C-C), sp 3 C-N and C-O, respectively [36][37][38].…”

Section: Characterization Of the Samplesmentioning

confidence: 99%

Synthesis of CNT@CoS/NiCo Layered Double Hydroxides with Hollow Nanocages to Enhance Supercapacitors Performance

et al. 2022

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One of the key factors to improve electrochemical properties is to find exceptional electrode materials. In this work, the nickel-cobalt layered double hydroxide (CNT@CoS/NiCo-LDH) with the structure of a hollow nanocage was prepared by etching CNT@CoS with zeolitic imidazolate framework-67 (ZIF-67) as a template. The results show that the addition of nickel has a great influence on the structure, morphology and chemical properties of materials. The prepared material CNT@CoS/NiCo-LDH-100 (C@CS/NCL-100) inherited the rhombic dodecahedral shape of ZIF-67 well and the CNTs were evenly interspersed among the rhombic dodecahedrons. The presence of CNTs improved the conductivity and surface area of the samples. The C@CS/NCL-100 demonstrates a high specific capacitance of 2794.6 F g−1 at 1 A g−1. Furthermore, as an assemble device, the device of C@CS/NCL-100 as a positive electrode exhibits a relatively high-energy density of 35.64 Wh kg−1 at a power density of 750 W kg−1 Further, even at the high-power density of 3750 W kg−1, the energy density can still retain 26.38 Wh kg−1. Hence, the superior performance of C@CS/NCL-100 can be ascribed to the synergy among CNTs, CoS and NiCo LDH, as well as the excellent three-dimensional structure obtained by used ZIF-67 as a template.

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“…2c). 36 Commercial polyurethane foams have been used as sacrificial templates for the preparation of porous carbon materials since as early as 2004 49 as their foam morphology disappears after carbonization. After that, a lot of researchers used polyurethane foams as templates and added other carbon sources, such as poly(amide acid), 49 resol, 50 phenolic monomer-formaldehyde, 51 Prussian blue nanotubes, 52 and MnO 2 nanotubes, to prepare porous carbon materials with different properties.…”

Section: Carbonization Upcyclingmentioning

confidence: 99%

“…After mixing the activated foam with elemental sulfur, a composite with large reversible capacity (1118 mA h g −1 ) and excellent cycling performances (460 mA h g −1 after 100 cycles at 5C (1C = 1670 mA g −1 )) was obtained. Over time, the conversion degree of polyurethane to carbon materials was gradually improved by changing the type of activator, as well as the pre-carbonization and carbonization conditions, and the obtained carbon materials have been applied in a variety of fields, such as CO 2 capture, 54–56 electrocatalysis, 57 supercapacitors, 36,58 and others. For example, in the recent report by Jiang et al , 36 N-doped hierarchical porous carbon (NHPC) was prepared from polyurethane foams by the autogenic atmosphere pyrolysis (AAP)-KOH activation method, and an ultra-high carbon yield of 55.0%, which is more than 17 times the yield from traditional polyurethane carbonization, was achieved.…”

Section: Carbonization Upcyclingmentioning

confidence: 99%

Upcycling of thermosetting polymers into high-value materials

Wang

et al. 2023

Mater. Horiz.

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High-yield and nitrogen self-doped hierarchical porous carbon from polyurethane foam for high-performance supercapacitors

Cited by 31 publications

References 69 publications

Construction of N, O Codoped Petal-like Hierarchical Porous Carbon with an Ultrahigh Specific Surface from Waste Bamboo for High-Performance Supercapacitors

Construction of N, O Codoped Petal-like Hierarchical Porous Carbon with an Ultrahigh Specific Surface from Waste Bamboo for High-Performance Supercapacitors

Synthesis of CNT@CoS/NiCo Layered Double Hydroxides with Hollow Nanocages to Enhance Supercapacitors Performance

Upcycling of thermosetting polymers into high-value materials

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