am6b14624_si_001.pdf (1.18 MB)
Simple and Large-Scale Strategy to Prepare Flexible Graphene Tape Electrode
journal contribution
posted on 2017-02-21, 00:00 authored by Li Wang, Jie Yu, Yayun Zhang, Han Yang, Longfei Miao, Yonghai SongA simple and large-scale
strategy to prepare flexible graphene tape electrode (GTE) was proposed.
The flexible GTE was prepared by a facile peeling method in which
a piece of commercial graphite foil was first covered by a commercial
acrylic transparent tape and then the transparent adhesive tape was
quickly torn off from the graphite foil. Scanning electron microscopy
results showed that some folded and wrinkled graphene layers stood
up on the GTE surface to form three-dimensional (3D) porous graphene
foam. The 3D porous flexible GTE was proposed as a novel supporting
matrix to load Ni–Co nanoparticles (Ni-CoNPs) and glucose oxidase
(GOD) as examples to test its applications for electrochemical glucose
sensing. The Ni-CoNPs/GTE showed the linear range of 0.6 μM–0.26
mM and 1.360–5.464 mM with a detection limit of 0.16 μM.
The GOD/AuNPs-CHIT/GTE had a linear range of 0.616–14.0 mM
and a detection limit of 0.202 mM. These results were similar or superior
to the printable electrodes by nanocarbon and electrodes modified
with graphene, carbon nanotubes, or porous carbon materials, but the
flexible GTE was more easier to prepare in large-scale and the 3D
porous graphene foam were not easy to drop off from the tape because
they were glued on acrylic transparent tape firmly. Therefore, the
3D porous flexible GTE should be promising candidates for electrochemical
sensors and other electrochemical applications.