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Paper-Derived Flexible 3D Interconnected Carbon Microfiber Networks with Controllable Pore Sizes for Supercapacitors

Journal Article


Abstract


  • Heteroatom-doped three-dimensional (3D) carbon fiber networks have attracted immense interest because of their extensive applications in energy-storage devices. However, their practical production and usage remain a great challenge because of the costly and complex synthetic procedures. In this work, flexible B, N, and O heteroatom-doped 3D interconnected carbon microfiber networks (BNOCs) with controllable pore sizes and elemental contents were successfully synthesized via a facile one-step "chemical vapor etching and doping" method using cellulose-made paper, the most abundant and cost-effective biomass, as an original network-frame precursor. Under a rational design, the BNOCs exhibited interconnected microfiber-network structure as expressways for electron transport, spacious accessible surface area for charge accumulation, abundant mesopores and macropores for rapid inner-pore ion diffusion, and lots of functional groups for additional pseudocapacitance. Being applied as binder-free electrodes for supercapacitors, BNOC-based supercapacitors not only revealed a high specific capacitance of 357 F g-1, a high capacitance retention of 150 F g-1 at 200 A g-1, a high energy density of 12.4 W h kg-1, and a maximum power density of 300.6 kW kg-1 with an aqueous electrolyte in two-electrode configuration but also exhibited a high specific capacitance of up to 242.4 F g-1 in an all-solid-state supercapacitor.

Publication Date


  • 2018

Citation


  • Dai, P., Xue, Y., Zhang, S., Cao, L., Tang, D., Gu, X., . . . Zhao, X. (2018). Paper-Derived Flexible 3D Interconnected Carbon Microfiber Networks with Controllable Pore Sizes for Supercapacitors. ACS Applied Materials and Interfaces, 10(43), 37046-37056. doi:10.1021/acsami.8b13281

Scopus Eid


  • 2-s2.0-85055663816

Start Page


  • 37046

End Page


  • 37056

Volume


  • 10

Issue


  • 43

Place Of Publication


Abstract


  • Heteroatom-doped three-dimensional (3D) carbon fiber networks have attracted immense interest because of their extensive applications in energy-storage devices. However, their practical production and usage remain a great challenge because of the costly and complex synthetic procedures. In this work, flexible B, N, and O heteroatom-doped 3D interconnected carbon microfiber networks (BNOCs) with controllable pore sizes and elemental contents were successfully synthesized via a facile one-step "chemical vapor etching and doping" method using cellulose-made paper, the most abundant and cost-effective biomass, as an original network-frame precursor. Under a rational design, the BNOCs exhibited interconnected microfiber-network structure as expressways for electron transport, spacious accessible surface area for charge accumulation, abundant mesopores and macropores for rapid inner-pore ion diffusion, and lots of functional groups for additional pseudocapacitance. Being applied as binder-free electrodes for supercapacitors, BNOC-based supercapacitors not only revealed a high specific capacitance of 357 F g-1, a high capacitance retention of 150 F g-1 at 200 A g-1, a high energy density of 12.4 W h kg-1, and a maximum power density of 300.6 kW kg-1 with an aqueous electrolyte in two-electrode configuration but also exhibited a high specific capacitance of up to 242.4 F g-1 in an all-solid-state supercapacitor.

Publication Date


  • 2018

Citation


  • Dai, P., Xue, Y., Zhang, S., Cao, L., Tang, D., Gu, X., . . . Zhao, X. (2018). Paper-Derived Flexible 3D Interconnected Carbon Microfiber Networks with Controllable Pore Sizes for Supercapacitors. ACS Applied Materials and Interfaces, 10(43), 37046-37056. doi:10.1021/acsami.8b13281

Scopus Eid


  • 2-s2.0-85055663816

Start Page


  • 37046

End Page


  • 37056

Volume


  • 10

Issue


  • 43

Place Of Publication