TY - JOUR
T1 - Highly Efficient Moisture-Triggered Nanogenerator Based on Graphene Quantum Dots
AU - Huang, Yaxin
AU - Cheng, Huhu
AU - Shi, Gaoquan
AU - Qu, Liangti
N1 - Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/11/8
Y1 - 2017/11/8
N2 - A high-performance moisture triggered nanogenerator is fabricated by using graphene quantum dots (GQDs) as the active material. GQDs are prepared by direct oxidation and etching of natural graphite powder, which have small sizes of 2-5 nm and abundant oxygen-containing functional groups. After the treatment by electrochemical polarization, the GQDs-based moisture triggered nanogenerator can deliver a high voltage up to 0.27 V under 70% relative humidity variation, and a power density of 1.86 mW cm-2 with an optimized load resistor. The latter value is much higher than the moisture-electric power generators reported previously. The GQD moisture triggered nanogenerator is promising for self-power electronics and miniature sensors.
AB - A high-performance moisture triggered nanogenerator is fabricated by using graphene quantum dots (GQDs) as the active material. GQDs are prepared by direct oxidation and etching of natural graphite powder, which have small sizes of 2-5 nm and abundant oxygen-containing functional groups. After the treatment by electrochemical polarization, the GQDs-based moisture triggered nanogenerator can deliver a high voltage up to 0.27 V under 70% relative humidity variation, and a power density of 1.86 mW cm-2 with an optimized load resistor. The latter value is much higher than the moisture-electric power generators reported previously. The GQD moisture triggered nanogenerator is promising for self-power electronics and miniature sensors.
KW - electrochemical treatment
KW - graphene quantum dots
KW - ion concentration gradient
KW - moisture-electric energy transformation
KW - moisture-triggered nanogenerator
UR - https://www.scopus.com/pages/publications/85033471610
U2 - 10.1021/acsami.7b12542
DO - 10.1021/acsami.7b12542
M3 - Article
C2 - 29063762
AN - SCOPUS:85033471610
SN - 1944-8244
VL - 9
SP - 38170
EP - 38175
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 44
ER -