Journal Home > Volume 14 , Issue 5

Various redox-active organic molecules can serve as ideal electrode materials to realize sustainable energy storage systems. Yet, to be more appropriate for practical use, considerable architectural engineering of an ultrathick, high-loaded organic electrode with reliable electrochemical performance is of crucial importance. Here, by utilizing the synergetic effect of the non-covalent functionalization of highly conductive non-oxidized graphene flakes (NOGFs) and introduction of mechanically robust cellulose nanofiber (CNF)-intermingled structure, a very thick (≈ 1 mm), freestanding organic nanohybrid electrode which ensures the superiority in cycle stability and areal capacity is reported. The well-developed ion/electron pathways throughout the entire thickness and the enhanced kinetics of electrochemical reactions in the ultrathick 5,10-dihydro-5,10-dimethylphenazine/NOGF/CNF (DMPZ-NC) cathodes lead to the high areal energy of 9.4 mWh·cm-2 (= 864 Wh·kg-1 at 158 W·kg-1). This novel ultrathick electrode architecture provides a general platform for the development of the high-performance organic battery electrodes.

File
12274_2020_3187_MOESM1_ESM.pdf (2.6 MB)
Publication history
Copyright
Acknowledgements

Publication history

Received: 24 August 2020
Revised: 11 October 2020
Accepted: 16 October 2020
Published: 09 November 2020
Issue date: May 2021

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature

Acknowledgements

This research was supported by Creative Materials Discovery Program (2017M3D1A1039558) and Nano-Material Technology Development Program (NRF-2016M3A7B4900119) through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT and Future Planning (MSIP). This work was also supported by the NRF of the Korea Government (MSIP) under Grant 2016R1E1A1A01943131.

Return