Template-induced self-activation route for nitrogen-doped hierarchically porous carbon spheres for electric double layer capacitors

Guo, Hongshuai; Ding, Bing; Wang, Jie; Zhang, Xiaogang; Hao, Xiaodong; Wu, Lei; An, Yufeng; Dou, Hui

doi:10.1016/j.carbon.2018.04.079

Cited by 60 publications

(27 citation statements)

References 40 publications

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“…Recently, the introduction of heteroatoms (O/N/S) in carbon skeleton has effectively increased the specic capacitance of carbon electrode materials in water electrolyte. [14][15][16][17] The mechanism of capacitance increase may be the Faraday reaction with heteroatom functional groups and the increase of wettability of channels. 17 Considering the above factors, if a material has both homogeneous ultrapore and heteroatom, it should have good capacitance performance.…”

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confidence: 99%

“…[14][15][16][17] The mechanism of capacitance increase may be the Faraday reaction with heteroatom functional groups and the increase of wettability of channels. 17 Considering the above factors, if a material has both homogeneous ultrapore and heteroatom, it should have good capacitance performance. The preparation methods of carbon materials with adjustable pore size and large specic surface area include chemical activation, physical activation, template method, polymer carbonization method and dealloying method.…”

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confidence: 99%

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Fabrication of resorcinol-based porous resin carbon material and its application in aqueous symmetric supercapacitors

et al. 2020

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confidence: 99%

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confidence: 99%

Fabrication of resorcinol-based porous resin carbon material and its application in aqueous symmetric supercapacitors

et al. 2020

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“…Nitrogen‐doped hierarchical porous carbon spheres were prepared by a self‐sacrificial CaCO 3 template method based on a previous report . In detail, CaCl 2 ⋅ 2 H 2 O (0.588 g) was added into soluble starch (2 g, 800 mL) solution.…”

Section: Methodsmentioning

confidence: 90%

“…Nitrogen-doped hierarchical porous carbon spheres were prepared by as elf-sacrificial CaCO 3 template method based on ap revious report. [40] In detail, CaCl 2 ·2H 2 O( 0.588 g) was added into soluble starch (2 g, 800 mL) solution. After completely dissolving, Na 2 CO 3 (0.05 m,1 200 mL) aqueous solution was slowly dropped into the above aqueous solution under continuous stirring.…”

Section: Synthesis Of Nitrogen-doped Hierarchical Porous Carbon Spheresmentioning

confidence: 99%

Dual Dopamine Derived Polydopamine Coated N‐Doped Porous Carbon Spheres as a Sulfur Host for High‐Performance Lithium–Sulfur Batteries

Fan

Ding

Guo

et al. 2019

Chemistry A European J

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Lithium–sulfur (Li–S) batteries are considered to be one of the most promising energy storage systems owing to their high energy density and low cost. However, their wide application is still limited by the rapid capacity fading. Herein, polydopamine (PDA)‐coated N‐doped hierarchical porous carbon spheres (NPC@PDA) are reported as sulfur hosts for high‐performance Li‐S batteries. The NPC core with abundant and interconnected pores provides fast electron/ion transport pathways and strong trapping ability towards lithium polysulfide intermediates. The PDA shell could further suppress the loss of lithium polysulfide intermediates through polar–polar interactions. Benefiting from the dual function design, the NPC/S@PDA composite cathode exhibits an initial capacity of 1331 mAh g−1 and remains at 720 mAh g−1 after 200 cycles at 0.5 C. At the pouch cell level with a high sulfur mass loading, the NPC/S@PDA composite cathode still exhibits a high capacity of 1062 mAh g−1 at a current density of 0.4 mA cm−2.

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“…Ariga's group adopted a soft templating method through coassembly of diblock polymer micelles with dopamine source, constructing a series of porous carbon spheres. Nitrogen‐doped hierarchically porous carbon spheres (Zhang's group) were synthesized by taking CaCO3 spheres as a hard template to induce the self‐activation of dopamine. In the above‐mentioned synthesis methods, macroscopic spherical structures, even interconnected 3D architectures, were successfully constructed.…”

Section: Introductionmentioning

confidence: 99%

Porous carbon nanospheres with moderately oriented domains for EDLC electrode

Xiao

Chang

Zhang

et al. 2019

J Chinese Chemical Soc

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Porous carbon nanospheres with moderately oriented microcrystalline structures were prepared via a relatively simple synthetic route in this article. CTAB acted as a structure‐directing agent to induce small sulfonated pitch (SP) pieces to assemble orderly. By this means, the formation of carbon nanospheres was simultaneous with the moderate orientation of carbon microcrystalline without additional process. Owing to the moderately oriented microcrystalline structures, the resultant sample CNS3 possessed a high e‐conductivity of 62.5 S/m. When used as an electrode material for EDLCs, it showed excellent electrochemical properties even without any conductive agent. In an organic electrolyte, the resultant sample CNS3 possessed a high specific capacitance of 155 F/g at 20 A/g and outstanding cycle life with 94.2% capacity retention after 10,000 cycles. This work puts forward a novel design for carbon nanospheres with moderately oriented domains by a simple and energy‐efficient means.

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Template-induced self-activation route for nitrogen-doped hierarchically porous carbon spheres for electric double layer capacitors

Cited by 60 publications

References 40 publications

Fabrication of resorcinol-based porous resin carbon material and its application in aqueous symmetric supercapacitors

Fabrication of resorcinol-based porous resin carbon material and its application in aqueous symmetric supercapacitors

Dual Dopamine Derived Polydopamine Coated N‐Doped Porous Carbon Spheres as a Sulfur Host for High‐Performance Lithium–Sulfur Batteries

Porous carbon nanospheres with moderately oriented domains for EDLC electrode

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