TY - JOUR
T1 - High-efficiency self-charging smart bracelet for portable electronics
AU - Song, Yu
AU - Wang, Haobin
AU - Cheng, Xiaoliang
AU - Li, Guoke
AU - Chen, Xuexian
AU - Chen, Haotian
AU - Miao, Liming
AU - Zhang, Xiaosheng
AU - Zhang, Haixia
PY - 2019/1
Y1 - 2019/1
N2 - The rapid advancements of lightweight, customized electronics have imposed a significant challenge on sustainable and maintenance-free micro-energy systems. For the sake of solving the limited power supply and low integration, it seems urgent to develop the flexible energy devices through structure design and performance optimization. Here, a high-efficiency self-charging smart bracelet is proposed by seamlessly combining flexible freestanding triboelectric nanogenerator, power management module with stretchable double-sided micro-supercapacitors. For energy-generating component, the FPCB-based freestanding triboelectric nanogenerator and power management module are adopted with excellent output performance, which obtains peak voltage of 305 V, and maximum power efficiency of 69.3%. Additionally, the double-sided micro-supercapacitors based on CNT-PDMS elastomer are designed to work stably and reliably as the stretchable energy-storing component, the capacitance of which maintains more than 96.87% even under 20% stretching strain. During human normal motions, this smart bracelet could be utilized for scavenging random motion movements and then simultaneously storing in the energy storage device through the high-efficiency power management module to develop a self-powered system for portable devices. As an effective and efficient power supply solution, this proposed self-charging smart bracelet demonstrates admirable potential to power a temperature-humidity meter or pedometer, which owns huge potentials in micro-energy wearable electronics and lays the solid foundation on the smart appliance. © 2018 Elsevier Ltd. All rights reserved.
AB - The rapid advancements of lightweight, customized electronics have imposed a significant challenge on sustainable and maintenance-free micro-energy systems. For the sake of solving the limited power supply and low integration, it seems urgent to develop the flexible energy devices through structure design and performance optimization. Here, a high-efficiency self-charging smart bracelet is proposed by seamlessly combining flexible freestanding triboelectric nanogenerator, power management module with stretchable double-sided micro-supercapacitors. For energy-generating component, the FPCB-based freestanding triboelectric nanogenerator and power management module are adopted with excellent output performance, which obtains peak voltage of 305 V, and maximum power efficiency of 69.3%. Additionally, the double-sided micro-supercapacitors based on CNT-PDMS elastomer are designed to work stably and reliably as the stretchable energy-storing component, the capacitance of which maintains more than 96.87% even under 20% stretching strain. During human normal motions, this smart bracelet could be utilized for scavenging random motion movements and then simultaneously storing in the energy storage device through the high-efficiency power management module to develop a self-powered system for portable devices. As an effective and efficient power supply solution, this proposed self-charging smart bracelet demonstrates admirable potential to power a temperature-humidity meter or pedometer, which owns huge potentials in micro-energy wearable electronics and lays the solid foundation on the smart appliance. © 2018 Elsevier Ltd. All rights reserved.
KW - Micro-supercapacitor
KW - Triboelectric nanogenerator
KW - Power management
KW - Self-charging
KW - Portable electronics
UR - http://www.scopus.com/inward/record.url?scp=85055742430&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85055742430&origin=recordpage
U2 - 10.1016/j.nanoen.2018.10.045
DO - 10.1016/j.nanoen.2018.10.045
M3 - RGC 21 - Publication in refereed journal
SN - 2211-2855
VL - 55
SP - 29
EP - 36
JO - Nano Energy
JF - Nano Energy
ER -