TY - JOUR
T1 - Flexible planar concentric circular micro-supercapacitor arrays for wearable gas sensing application
AU - Li, La
AU - Fu, Chengwei
AU - Lou, Zheng
AU - Chen, Shuai
AU - Han, Wei
AU - Jiang, Kai
AU - Chen, Di
AU - Shen, Guozhen
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017/11
Y1 - 2017/11
N2 - Micro-supercapacitor (MSC) are considered to be a promising candidate for wearable energy storage due to their scale down in dimensions to fit on-chip geometries of integrated nanosystem, high charge/discharge efficiency, long lifetimes and strong security compared to Li-ion batteries. In this work, we present a polypyrrole (Ppy) film based MSC arrays by combining photolithograph and electrodepositon method. The designed MSC with concentric circles structure exhibited a large areal capacitance of 47.42 mF/cm2 and provided a power density of 0.185 mW/cm2 at an area energy density of 0.004 mWh/cm2. MSC arrays connected in series were utilized as power source to drive a wearable gas sensor on the same flexible substrate. As-designed wearable self-driven room temperature ethanol gas sensor showed a quick response time (13 s) and recovery time (4.5 s), good selectivity to ethanol and a high detection capability of less than 1 ppm at room temperature, proving the feasibility of the wearable MSC arrays integrated gas sensing system and offering a quick, easy and comfortable way for personalized monitoring drunken driving.
AB - Micro-supercapacitor (MSC) are considered to be a promising candidate for wearable energy storage due to their scale down in dimensions to fit on-chip geometries of integrated nanosystem, high charge/discharge efficiency, long lifetimes and strong security compared to Li-ion batteries. In this work, we present a polypyrrole (Ppy) film based MSC arrays by combining photolithograph and electrodepositon method. The designed MSC with concentric circles structure exhibited a large areal capacitance of 47.42 mF/cm2 and provided a power density of 0.185 mW/cm2 at an area energy density of 0.004 mWh/cm2. MSC arrays connected in series were utilized as power source to drive a wearable gas sensor on the same flexible substrate. As-designed wearable self-driven room temperature ethanol gas sensor showed a quick response time (13 s) and recovery time (4.5 s), good selectivity to ethanol and a high detection capability of less than 1 ppm at room temperature, proving the feasibility of the wearable MSC arrays integrated gas sensing system and offering a quick, easy and comfortable way for personalized monitoring drunken driving.
KW - Energy storage
KW - Flexible electronics
KW - Micro-supercapacitors
KW - Wearable electronics
UR - http://www.scopus.com/inward/record.url?scp=85029921409&partnerID=8YFLogxK
U2 - 10.1016/j.nanoen.2017.08.060
DO - 10.1016/j.nanoen.2017.08.060
M3 - Article
AN - SCOPUS:85029921409
SN - 2211-2855
VL - 41
SP - 261
EP - 268
JO - Nano Energy
JF - Nano Energy
ER -
