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Potassium reduced graphite functionalization: Architectural aesthetics and electrical excellence

Rational functionalization plays an important role to push forward graphene applications in multifarious cutting-edge technologies. A key topic that how to program the regular distribution of functional groups, however, remains a big challenge. Herein, we developed a very simple, high-throughput gra...

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Bibliographic Details
Published in:Carbon (New York) 2022-01, Vol.186, p.75-82
Main Authors: Bai, Li, Xu, Yongqi, Hu, Cheng-Min, Dong, Lei, Wang, Xinping, Li, Wei-Shi, Zhao, Fu-Gang
Format: Article
Language:English
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Summary:Rational functionalization plays an important role to push forward graphene applications in multifarious cutting-edge technologies. A key topic that how to program the regular distribution of functional groups, however, remains a big challenge. Herein, we developed a very simple, high-throughput graphite reduction methodology to attain the negatively-charged graphene which carried ultrahigh-density and evenly-distributed negative charges. Guided by these negative charges, electrophiles were regularly attached to graphene sheets. On the other hand, potassium reduction will not break the carbon-carbon σ-bonds, hence graphene hexagonal lattice was kept as perfect as the pristine pattern. Structural advantages of the negatively-charged graphene derivatives allowed a far more excellent conductivity and electron mobility than the counterparts derived from the prevalent graphene oxide precursor. [Display omitted]
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2021.10.019