A simple self-assembly strategy for ultrahigh surface area nitrogen-doped porous carbon nanospheres with enhanced adsorption and energy storage performances

Tang, Zhiwei; Liu, Shaohong; Lu, Zheng; Lin, Xidong; Zheng, Bingna; Liu, Ruliang; Wu, Dehai; Fu, Ruowen

doi:10.1039/c7cc03212a

Cited by 28 publications

(10 citation statements)

References 14 publications

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“…Inspired by the Nazar's previous research that the classic mesoporous carbon (CMK-3) was employed to encapsulate the element sulfur into its highly ordered pore, [355] various nanostructured carbon materials, e.g., carbon nanotubes, [356][357][358] carbon nanowires/fibers [359][360][361] and solid/hollow carbon spheres [362][363][364][365] have emerged as promising sulfur scaffolds. However, the nonpolar carbon surface offers unsatisfactory chemical affinity toward polar LiPSs species, leading to the inferior accommodation of LiPSs and passive Li 2 S layers, and thus render fast capacity degrading over moderate-term cycling.…”

Section: Porous Carbonaceous Scaffoldmentioning

confidence: 99%

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Zheng

Lin

Zhang

et al. 2019

Adv Funct Materials

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196

118

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The demand for practical and cost-effective environmental treatment and energy storage materials is exploding. Porous polymeric and carbonaceous materials have attracted tremendous interest on account of their welldeveloped porosity and tunable surface chemistry. Functionalization of pore structures further enhances their properties for environmental treatment and energy storage. Herein, the procedures for functionalization of porous structures are introduced, including predesign and postsynthetic strategies. Subsequently, the important advancements of emerging porous polymers for environmental treatment in sorption (e.g., organic micropollutant adsorption, heavy metal ion removal, radionuclide extraction, and oil absorption) and membrane separation (e.g., aqueous micropollutant separation, organic solvent nanofiltration, desalination and pervaporation), as well as for energy storage ranging from the electrodes and separators of batteries to supercapacitor electrodes are highlighted. Moreover, given the combined merits of high intrinsic conductivity, porosity, and physicochemical stability, novel polymer-based porous carbons for energy storage are also highlighted. Key functionalization chemistry for each application is discussed and an in-depth understanding of the structure-property relationships of these functional porous materials is provided. Finally, the challenges and perspectives of emerging functional porous polymeric and carbonaceous materials for environmental treatment and energy storage are proposed.

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Section: Porous Carbonaceous Scaffoldmentioning

confidence: 99%

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Zheng

Lin

Zhang

et al. 2019

Adv Funct Materials

Self Cite

196

118

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“…Because a large number of hydroxyl groups and protonated amino groups exist in the molecular structure of [Megl][HSO 4 ], the hydrogen-bonding, charge attraction and van der Waals force, etc. can act as driving forces for the polymerization to form micelles. − The combined action of [Megl][HSO 4 ], F127 and SDS makes the block structure and microsphere micelles form. During pyrolysis, F127 and SDS were gradually removed to form the combined structure of loose folding, and the microsphere micelles on the surface of the block form a hollow carbon sphere due to the decomposition of F127 located inside the micelle .…”

Section: Resultsmentioning

confidence: 99%

Solvent-Free Synthesis of N/S-Codoped Hierarchically Porous Carbon Materials from Protic Ionic Liquids for Temperature-Resistant, Flexible Supercapacitors

Sun

Yao

Zhou

et al. 2018

ACS Sustainable Chem. Eng.

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A versatile precursor of protic ionic liquids ([Megl][HSO4]) was used to prepare N/S-codoped hierarchically porous carbon materials (N/S-HPC) by a double soft-template solvent-free self-assembly method. [Megl][HSO4] as carbon source, heteroatoms source and microporous forming agent, F127 as mesoporous soft-template and sodium dodecyl sulfate as macroporous soft-template have self-assembly in the curing process, and then are direct pyrolyzed to acquire N/S-HPC. The optimal sample shows large specific surface area of 1210 m2 g–1, high heteroatom doping (N: 5.31 at. %, S: 3.02 at. %, O: 5.56 at. %) and hierarchically porous structure with micropores (0.8–1.8 nm), mesopores (2.1–7.3 nm) and macropores (54–147 nm). The incorporation of N, S and O atoms into the carbon skeleton structure improves electrical conductivity and surface wettability, and provides additional pseudocapacitance. The results make N/S-HPC not only display high specific capacitance of 347 F g–1 at 0.5 A g–1 and still 174 F g–1 even at 20 A g–1 but also excellent cyclic stability of almost 100% capacitance retention for 5000 cycles in 6 M KOH electrolyte. Furthermore, the N/S-HPC still maintains excellent electrochemical property and stability under extreme temperatures (−20–+100 °C) and bending (0°–180°). Meanwhile, the as-assembled symmetric supercapacitor displays a superior energy density of 15.8 Wh kg–1 at the power density of 212.4 W kg–1, outstanding capacitive performance of 157 F g–1 at 0.5 A g–1 with a large electrochemical window of 1.7 V in 1 M Na2SO4 electrolyte.

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“…At the same time, the volume expansion of sulfur and the shuttle effect caused by the dissolution of polysulfide in the electrolyte lead to attenuation of battery capacity. 8 For that reason, sulfur is normally encapsulated in a porous conductor matrix, such as graphene, 9 carbon nanotubes, 10 or porous carbon, 11 that can facilitate electron transport, buffer the volume expansion, and trap the polysulfide.…”

Section: Introductionmentioning

confidence: 99%

Facile Dissolution–Crystallization Strategy to Achieve Rapid and Uniform Distribution of Sulfur on Porous Carbon for Lithium–Sulfur Batteries

Zhang

Gao

et al. 2022

ACS Omega

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In this work, we proposed a facile dissolution–crystallization strategy based on density functional theory calculations to achieve rapid as well as uniform distribution of sulfur on porous carbon. Sulfur-containing solution can completely penetrate porous material and in preference remove into the pores under the influence of capillary force, and sulfur tends to crystallize on the defective even non-defective carbon matrix rather than agglomerate. The S/PC composites prepared by this method can still achieve uniform distribution of sulfur when the sulfur content is as high as 85%. All operations can be completed within a few minutes without any heating. Compared with common melt-diffusion and vapor-phase infusion, this approach has lower energy consumption and is simple, safe, continuous, and rapid.

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A simple self-assembly strategy for ultrahigh surface area nitrogen-doped porous carbon nanospheres with enhanced adsorption and energy storage performances

Cited by 28 publications

References 14 publications

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Solvent-Free Synthesis of N/S-Codoped Hierarchically Porous Carbon Materials from Protic Ionic Liquids for Temperature-Resistant, Flexible Supercapacitors

Facile Dissolution–Crystallization Strategy to Achieve Rapid and Uniform Distribution of Sulfur on Porous Carbon for Lithium–Sulfur Batteries

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