Lignin Laser Lithography: A Direct-Write Method for Fabricating 3D Graphene Electrodes for Microsupercapacitors
Type
ArticleAuthors
Zhang, Wenli
Lei, Yongjiu

Ming, Fangwang

Jiang, Qiu

Da Costa, Pedro M. F. J.

Alshareef, Husam N.

KAUST Department
Functional Nanomaterials and Devices Research GroupMaterial Science and Engineering Program
Physical Science and Engineering (PSE) Division
Date
2018-08-09Online Publication Date
2018-08-09Print Publication Date
2018-09Permanent link to this record
http://hdl.handle.net/10754/630473
Metadata
Show full item recordAbstract
In this work, a simple lignin-based laser lithography technique is developed and used to fabricate on-chip microsupercapacitors (MSCs) using 3D graphene electrodes. Specifically, lignin films are transformed directly into 3D laser-scribed graphene (LSG) electrodes by a simple one-step CO2 laser irradiation. This step is followed by a water lift-off process to remove unexposed lignin, resulting in 3D graphene with the designed electrode patterns. The resulting LSG electrodes are hierarchically porous, electrically conductive (conductivity is up to 66.2 S cm−1), and have a high specific surface area (338.3 m2 g−1). These characteristics mean that such electrodes can be used directly as MSC electrodes without the need for binders and current collectors. The MSCs fabricated using lignin laser lithography exhibit good electrochemical performances, namely, high areal capacitance (25.1 mF cm−2), high volumetric energy density (≈1 mWh cm−3), and high volumetric power density (≈2 W cm−3). The versatility of lignin laser lithography opens up the opportunity in applications such as on-chip microsupercapacitors, sensors, and flexible electronics at large-scale production.Citation
Zhang W, Lei Y, Ming F, Jiang Q, Costa PMFJ, et al. (2018) Lignin Laser Lithography: A Direct-Write Method for Fabricating 3D Graphene Electrodes for Microsupercapacitors. Advanced Energy Materials 8: 1801840. Available: http://dx.doi.org/10.1002/aenm.201801840.Sponsors
W.L.Z. and Y.J.L. contributed equally to this work. Research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST). Authors thank the Advanced Nanofabrication, Imaging and Characterization Laboratory at KAUST for their excellent support. W.L.Z. thanks Fan Zhang and Dr. Chuan Xia at KAUST for their help.Publisher
WileyJournal
Advanced Energy Materialsae974a485f413a2113503eed53cd6c53
10.1002/aenm.201801840