期刊
NANO RESEARCH
卷 14, 期 5, 页码 1382-1389出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-020-3187-9
关键词
energy storage; organic electrodes; batteries; graphene; cellulose nanofibers
类别
资金
- Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning (MSIP) [2017M3D1A1039558]
- Nano-Material Technology Development Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning (MSIP) [NRF-2016M3A7B4900119]
- NRF of the Korea Government (MSIP) [2016R1E1A1A01943131]
- National Research Foundation of Korea [2016M3A7B4900119] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Utilizing non-covalent functionalization of highly conductive non-oxidized graphene flakes and the introduction of cellulose nanofibers, a thick organic nanohybrid electrode with superior cycle stability and areal capacity is reported. This novel electrode architecture serves as a general platform for the development of high-performance organic battery electrodes.
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 (approximate to 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 center dot cm(-2) (= 864 Wh center dot kg(-1) at 158 W center dot kg(-1)). This novel ultrathick electrode architecture provides a general platform for the development of the high-performance organic battery electrodes.
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