Skip to main content

Advertisement

Log in

Self-chargeable zinc-ion hybrid supercapacitor driven by salt-concentrated cellulose hydrogel

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

Abstract

The energy storage devices working without electrical grid are attractive for expanding the range of human activities. By using ZnCl2-concentrated cellulose hydrogel as electrolyte, a carbon-based zinc-ion hybrid supercapacitor (ZHS) gains a self-charging ability. The exhausted ZHS will spontaneously recover the discharge capacity by being exposed to air. After repeated “air charging”, the self-charging ability can be reactivated by charging the ZHS to 2.1 V with an external power supply. The ZHS is reliable at a high operating voltage of 2.1 V with a capacity retention of 70.9% after 2000 charge/discharge cycles. The self-chargeable ZHS is convenient for practical application because the cellulose hydrogel is stable in air as well as flexible and sustainable. This work provides new insights into the off-grid charging technologies.

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

Similar content being viewed by others

References

Download references

Acknowledgements

The authors thank Forestry Science and Technology Innovation and Extension Project of Jiangsu Province (LYKJ[2021]04), and the Advanced Analysis & Testing Center, Nanjing Forestry University for sample tests.

Funding

The authors are grateful for the financial support of the National Natural Science Foundation of China (21808112).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Jianfeng Yao.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Publisher's Note

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

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 4883 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Yang, L., Li, J., Zhang, P. et al. Self-chargeable zinc-ion hybrid supercapacitor driven by salt-concentrated cellulose hydrogel. Cellulose 28, 11483–11492 (2021). https://doi.org/10.1007/s10570-021-04278-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10570-021-04278-8

Keywords

Navigation