Laser-Assisted
Multiscale Fabrication of Configuration-Editable Supercapacitors with
High Energy Density
Jian Gao
Changxiang Shao
Shengxian Shao
Congcong Bai
Ur Rehman Khalil
Yang Zhao
Lan Jiang
Liangti Qu
10.1021/acsnano.9b02176.s002
https://acs.figshare.com/articles/media/Laser-Assisted_Multiscale_Fabrication_of_Configuration-Editable_Supercapacitors_with_High_Energy_Density/8204138
The
construction of multidimensional, diversified microsupercapacitors
(MSC) is urgently needed for fast-changing flexible and wearable microelectronics,
which still meets the challenges of tedious construction and difficult
integration. Herein, a laser direct writing strategy has been developed
for the one-step preparation of multiscale MSCs from editable macro-supercapacitors.
The microstructured supercapacitors with predefined multiscale shapes
not only maintain the high capacitance performance and stability but
also display the tensile properties in arbitrary direction. The heat-treated
ion liquid-modified reduced graphene oxide guarantees the thermal
stability of an electrode material during laser cutting, and its high
ion-accessible surface area improves the capacitance performance of
the supercapacitor. The as-fabricated MSC demonstrates a wide voltage
window (0–3 V), high areal specific capacitance (27.4 mF cm<sup>–2</sup>), and high energy density (32.1 μW h cm<sup>–2</sup>), which are far higher than those of most reported
articles. Notably, the editable supercapacitors can imitate the stereo
paper cutting to achieve an arbitrary one-dimensional to three-dimensional
configuration, promising for various portable, stretchable, and wearable
devices.
2019-05-28 00:00:00
stability
wearable
graphene oxide guarantees
Laser-Assisted Multiscale Fabrication
supercapacitor
cm
capacitance performance
heat-treated ion liquid-modified
editable
construction
laser
ion-accessible surface area
MSC
High Energy Density
predefined multiscale shapes