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Park, Wongyoung
in Cooperation with on an Cooperation-Score of 37%
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article
Mechanically Robust Self‐Organized Crack‐Free Nanocellular Graphene with Outstanding Electrochemical Properties in Sodium Ion Battery
Abstract
<jats:title>Abstract</jats:title><jats:p>Crack‐free nanocellular graphenes are attractive materials with extraordinary mechanical and electrochemical properties, but their homogeneous synthesis on the centimeter scale is challenging. Here, a strong nanocellular graphene film achieved by the self‐organization of carbon atoms using liquid metal dealloying and employing a defect‐free amorphous precursor is reported. This study demonstrates that a Bi melt strongly catalyzes the self‐structuring of graphene layers at low processing temperatures. The robust nanoarchitectured graphene displays a high‐genus seamless framework and exhibits remarkable tensile strength (34.8 MPa) and high electrical conductivity (1.6 × 10<jats:sup>4</jats:sup> S m<jats:sup>−1</jats:sup>). This unique material has excellent potential for flexible and high‐rate sodium‐ion battery applications.</jats:p>