Facile preparation of nitrogen-doped hierarchical porous carbon with high performance in supercapacitors

Yan, Kang; Kong, Ling‐Bin; Shen, Kuiwen; Dai, Yu‐Tzu; Shi, Ming; Hu, Bing; Luo, Yan‐Ling; Kang, Long

doi:10.1016/j.apsusc.2015.12.193

Cited by 51 publications

(15 citation statements)

References 45 publications

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“…On the other hand, with increasing content of the AA monomer in the copolymerization, the number of AA segments in the copolymer also increases. The AA segments form defects in the materials after carbonization and produce different nitrogen dopants such as pyridine N and pyrrolic N. The introduction of AA into the copolymer chain may, to some extent, prevent nitrogen removal during calcination, which is beneficial for nitrogen retention in the CNFs . Therefore, the nitrogen content in the finally obtained CNFs is determined by the two above‐mentioned factors, and the nitrogen content first increases and then decreases with increasing weight ratio between AA and AN.…”

Section: Resultsmentioning

confidence: 99%

Microporous Carbon Nanofibers Derived from Poly(acrylonitrile‐co‐acrylic acid) for High‐Performance Supercapacitors

Song

Zhang

et al. 2020

Chemistry A European J

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Carbon nanofiber (CNF)‐based supercapacitors have promising applications in the field of energy storage. It is desirable, but remains challenging, to develop CNF electrode materials with large specific surface area (SSA), high specific capacitance (SC), and high power density, as well as excellent cycling stability and high reliability. Herein, acrylonitrile–acrylic acid copolymer P(AN‐co‐AA) was synthesized for the preparation of nitrogen‐doped microporous CNFs. Thermal degradation of the AA segment leads to the formation of micropores that are distributed not only on the CNF surface, but also inside the material. The microporous structure and nitrogen content can be manipulated at the molecular level by adjusting the weight ratio between AN and AA, and the SSA and SC could reach as high as 1099 m2 g−1 and 156 F g−1, respectively. After KOH activation, the activated CNFs have an extremely high SSA of 2117 m2 g−1 and SC of 320 F g−1, which are among the highest values ever reported for electric double‐layer supercapacitors with an alkaline electrolyte. Furthermore, the capacitance retention, which can be maintained at 99 % even after 16 000 cyclic tests, reveals outstanding durability and repeatability.

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Section: Resultsmentioning

confidence: 99%

Microporous Carbon Nanofibers Derived from Poly(acrylonitrile‐co‐acrylic acid) for High‐Performance Supercapacitors

Song

Zhang

et al. 2020

Chemistry A European J

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“…In addition, the intensity ratio of G band and D band (I G /I D ) can be used to state the average width of graphitic domains (L a ). [41] It is clearly noted that the L a value of HPC-1 is 3.68 nm, which is the lowest than that of C-PF (4.78 nm), C-PP (4.83 nm), HPC-0.5 (4.88 nm), HPC-1.5 (4.83 nm) and HPC-2 (4.62 nm), demonstrating that HPC-1 shows a lower crystallinity and higher degree of disordered domains and defects.…”

Section: Resultsmentioning

confidence: 99%

“…In our case, the calculated I D /I G value of HPC‐1 is determined to be approximately 1.18, which is larger than that of C‐PF (0.91), C‐PP (0.90), HPC‐0.5 (0.89), HPC‐1.5 (0.90) and HPC‐2 (0.94). In addition, the intensity ratio of G band and D band (I G /I D ) can be used to state the average width of graphitic domains ( L a ) . It is clearly noted that the L a value of HPC‐1 is 3.68 nm, which is the lowest than that of C‐PF (4.78 nm), C‐PP (4.83 nm), HPC‐0.5 (4.88 nm), HPC‐1.5 (4.83 nm) and HPC‐2 (4.62 nm), demonstrating that HPC‐1 shows a lower crystallinity and higher degree of disordered domains and defects.…”

Section: Resultsmentioning

confidence: 99%

Template‐Induced Self‐Activation Route for Hierarchical Porous Carbon Derived from Interpenetrating Polymer Networks as Electrode Material for Supercapacitors

Chen

Gao

et al. 2019

ChemElectroChem

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Hierarchical porous textures of carbon‐based electrode materials are advantageous for applications in supercapacitors, owing to their reasonable pore size distribution and large surface area. In this work, a facile yet effective one‐step carbonization method for the preparation of hierarchical porous carbons (HPCs) derived from interpenetrating polymer networks (IPNs) of phenol‐formaldehyde resin (PF) and sodium polyacrylate (PAAS) is proposed. Phenol‐formaldehyde prepolymer can be introduced into the inter network space of PAAS to form IPNs in which only hydrogen‐bonding interactions exist between them. During the carbonization process of IPNs, the PF networks tend to form a carbon matrix, which generates large amounts of micropores. While the PAAS evaporates into gaseous products, serving as a template for micro‐, meso‐, and macropores. Due to such synergistic effects, a carbon material with a large surface area of 1764 m2 g−1 and a large pore volume of 1.111 cm3 g−1 is constructed with an interconnected hierarchical porous carbon network structure. With such unique carbon structure characteristics, the electrode material of HPC delivers a high specific capacitance of 201 F g−1 at 0.5 A g−1 and excellent cyclability of approximately 100 % of capacitance retention after 10000 cycles. The ideal capacitive behavior from IPNs provides new insights for the production of carbonaceous materials for high‐performance supercapacitors applications.

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“…Pore size distributions were obtained using nonlocal density functional theory (NLDFT), similar to a previous report. [ 77 ] Ultraviolet–visible (UV–vis) spectra were acquired using an Agilent Cary 5000 UV–vis–NIR spectrophotometer. All electrochemical tests were carried out using an electrochemical workstation (PARSTATS 4000+, Princeton Applied Research, Ametek Inc).…”

Section: Methodsmentioning

confidence: 99%

Capacitive Organic Dye Removal by Block Copolymer Based Porous Carbon Fibers

Serrano

Khan

et al. 2020

Adv Materials Inter

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Block copolymer based porous carbon fibers (PCFs) have hierarchical pores, high surface areas, and excellent electrical/ion conductivities. Herein, PCF is synthesized from poly(methyl methacrylate)‐block‐poly(acrylonitrile) and utilized for organic dye removal. The PCF contains hierarchical macro‐, meso‐, and micropores with a surface area of 780 m2 g−1. The electrosorptive behavior of PCF is well described by the Langmuir isotherm and the Weber–Morris model. Based on the model, the interconnected hierarchical pores contribute to easy accessibility of dye ions to the inner surface sites within PCF, resulting in a high electrosorption capacity of 1360 mg g−1, reaching ≈87% of the theoretical maximum. The PCF shows a capacity loss of <0.5% over ten cycles during a 240 h operation period. Thanks to the hierarchical pores that allow for rapid ion desorption, the PCF can easily be regenerated. Lastly, depending on the electrode configuration, the PCF can selectively remove anionic dye, cationic dye, or both. The findings herein provide a fundamental understanding of electrosorptive behavior of block copolymer based porous carbon fibers, enabling future development in filtration applications.

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Facile preparation of nitrogen-doped hierarchical porous carbon with high performance in supercapacitors

Cited by 51 publications

References 45 publications

Microporous Carbon Nanofibers Derived from Poly(acrylonitrile‐co‐acrylic acid) for High‐Performance Supercapacitors

Microporous Carbon Nanofibers Derived from Poly(acrylonitrile‐co‐acrylic acid) for High‐Performance Supercapacitors

Template‐Induced Self‐Activation Route for Hierarchical Porous Carbon Derived from Interpenetrating Polymer Networks as Electrode Material for Supercapacitors

Capacitive Organic Dye Removal by Block Copolymer Based Porous Carbon Fibers

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