Laser-Induced Graphene Derived from Kraft Lignin for Flexible Supercapacitors | Zendy

Faisal Mahmood | Zendy; Hanwen Zhang | Zendy; Jian Lin | Zendy; Caixia Wan | Zendy

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Laser-Induced Graphene Derived from Kraft Lignin for Flexible Supercapacitors

Author(s) -

Faisal Mahmood,

Hanwen Zhang,

Jian Lin,

Caixia Wan

Publication year - 2020

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.0c01293

Subject(s) - materials science , supercapacitor , polydimethylsiloxane , graphene , capacitance , composite number , fabrication , lignin , composite material , nanotechnology , chemistry , electrode , organic chemistry , medicine , alternative medicine , pathology

Porous graphene was photothermally induced from kraft lignin via direct laser writing. This laser-induced graphene (LIG) possessed a hierarchical structure with a three-dimensional (3D) interconnected network ideal for its transfer from the kraft lignin/poly(ethylene oxide) (KL/PEO) film onto polydimethylsiloxane (PDMS). The resultant LIG/PDMS composite was shown to keep the intrinsic porous structure and electrically active sites of LIG. The supercapacitors (SCs) fabricated using the LIG/PDMS composite exhibited good electrochemical performance and excellent cyclic stability. More than 90% capacitance was retained after 10 000 cycles. Moreover, due to their high flexibility, the SCs were able to endure bending deformation without significantly sacrificing their capacitance. The proposed technology for the fabrication of flexible SCs based on lignin-derived LIG demonstrated great potential to use a low-cost, renewable material for the manufacture of portable and wearable electronics.

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