Skip to main content

Advertisement

Log in

2D nitrogen-doped porous carbon nanosheets derived from cellulose nanofiber/silk fibroin nanohybrid cellular monoliths with promising capacitive performance

  • Original Research
  • Published:
Cellulose Aims and scope Submit manuscript

Abstract

2D nitrogen-doped porous carbon nanosheets are prepared from cellulose nanofiber/silk fibroin nanohybrid cellular monoliths via unidirectional freeze-shaping technique, carbonization, and CO2 activation processes. The micromorphology of the cellulose nanofiber/silk fibroin nanohybrid cellular monoliths can be effectively controlled by simply changing the content of silk fibroin. The 2D nitrogen-doped porous carbon nanosheets (NPCN-X, X represents the content of silk fibroin), inherited from different cellular monolith, show a distinct micromorphology. The NPCN-50 exhibits the best electrochemical performance due to its 2D nanostructure, abundant multi-scale through pores, high specific surface area (about 1882 m2 g−1), and appropriate surface N/O-doping. The largest gravimetric capacitance value is about 329.9 F g−1 at a current density of 0.25 A g−1. The energy density reaches as high as 37.5 Wh kg−1 at a power density of 186.3 W kg−1. The NPCN-50 also exhibits excellent electrochemical cycling stability.

Graphic abstract

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8

Similar content being viewed by others

References

Download references

Acknowledgments

Financial support was kindly supplied by grants from National Natural Science Foundation of China (Nos. 21601162, 21501154, 21471135).

Author information

Authors and Affiliations

Authors

Corresponding authors

Correspondence to Qingyuan Niu or Lizhen Wang.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Supplementary material 1 (DOCX 14039 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Gao, K., Zhao, S., Niu, Q. et al. 2D nitrogen-doped porous carbon nanosheets derived from cellulose nanofiber/silk fibroin nanohybrid cellular monoliths with promising capacitive performance. Cellulose 26, 9241–9254 (2019). https://doi.org/10.1007/s10570-019-02723-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10570-019-02723-3

Keywords

Navigation