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Laser‐Induced Molybdenum Carbide–Graphene Composites for 3D Foldable Paper Electronics
Author(s) -
Zang Xining,
Shen Caiwei,
Chu Yao,
Li Buxuan,
Wei Minsong,
Zhong Junwen,
Sanghadasa Mohan,
Lin Liwei
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201800062
Subject(s) - materials science , graphene , supercapacitor , composite material , electronics , laser , molybdenum , flexible electronics , electrical conductor , composite number , nanotechnology , electrode , electrochemistry , metallurgy , optics , chemistry , physics
Versatile and low‐cost manufacturing processes/materials are essential for the development of paper electronics. Here, a direct‐write laser patterning process is developed to make conductive molybdenum carbide–graphene (MCG) composites directly on paper substrates. The hierarchically porous MCG structures are converted from fibrous paper soaked with the gelatin‐mediated inks containing molybdenum ions. The resulting Mo 3 C 2 and graphene composites are mechanically stable and electrochemically active for various potential applications, such as electrochemical ion detectors and gas sensors, energy harvesters, and supercapacitors. Experimentally, the electrical conductivity of the composite is resilient to mechanical deformation with less than 5% degradation after 750 cycles of 180° repeated folding tests. As such, the direct laser conversion of MCGs on papers can be applicable for paper‐based electronics, including the 3D origami folding structures.