All-Carbon Hybrid Mobile Ion Capacitors Enabled by 3D Laser Scribed Graphene
Type
ArticleAuthors
Zhang, Fan
Zhang, Wenli

Guo, Jing
Lei, Yongjiu

Dar, Mushtaq A.
Almutairi, Zeyad
Alshareef, Husam N.

KAUST Department
Functional Nanomaterials and Devices Research GroupMaterial Science and Engineering
Material Science and Engineering Program
Materials Science and EngineeringPhysical Science & Engineering DivisionKing Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
Physical Science and Engineering (PSE) Division
Date
2020-03-24Online Publication Date
2020-03-24Print Publication Date
2020-06Submitted Date
2020-02-27Permanent link to this record
http://hdl.handle.net/10754/662200
Metadata
Show full item recordAbstract
Hybrid mobile ion capacitors (HMIC) have been proposed as a way to incorporate the advantages of both batteries and supercapacitors into one system. Unfortunately, considering the much slower Li+ intercalation/deintercalation process, finding a suitable battery anode material with high rate performance is still a major challenge. Here, we report the fabrication of laser scribed nitrogen-doped graphene (NLSG) with 3D structure as binder-free, and conductive additive-free anode. This NLSG anode has high nitrogen and oxygen doping (8.6 at% and 6.3 at%) leading to the formation of conductive electrodes with expanded lattice spacing, providing more convenient pathways and reaction sites for Li+ ions. Hybrid Li-ion capacitors (HLIC) were assembled by combining the NLSG anodes with hierarchical porous carbon (PC) cathodes obtained by pyrolysis of Ethylenediaminetetraacetic (EDTA) tetrasodium salt. The NLSG//PC hybrid Li-ion capacitors show an energy density (including the total weight of two electrodes) of 186 Wh kg−1 at 200 W kg−1. Even when power density increased to the level of conventional supercapacitors (20 kW kg−1), an energy density of 76 Wh kg−1 can still be obtained. Further, the devices exhibit excellent cycle life, retaining 87.5% of the initial value after 5000 cycles. This study demonstrates that laser scribed graphene is a very promising electrode for mobile ion capacitors.Citation
Zhang, F., Zhang, W., Guo, J., Lei, Y., Dar, M. A., Almutairi, Z., & Alshareef, H. N. (2020). All-Carbon Hybrid Mobile Ion Capacitors Enabled by 3D Laser Scribed Graphene. Energy Technology. doi:10.1002/ente.202000193Sponsors
The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST) under the KAUST-King Saud University Battery Initiative (KAUST Grant # REP/1/3804-01). The authors thank the Core Laboratory Staff at KAUST for their support. M.A.D. and Z.A. greatly acknowledge Deanship of Scientific Research at King Saud University for funding research grant no RG#1440-115Publisher
WileyJournal
Energy TechnologyAdditional Links
https://onlinelibrary.wiley.com/doi/abs/10.1002/ente.202000193ae974a485f413a2113503eed53cd6c53
10.1002/ente.202000193