Wind energy harvesting and self-powered flow rate sensor enabled by contact electrification

We have developed a free-standing-mode based triboelectric nanogenerator (F-TENG) that consists of indium tin oxide (ITO) foils and a polytetrafluoroethylene (PTFE) thin film. By utilizing the wind-induced resonance vibration of a PTFE film between two ITO electrodes, the F-TENG delivers an open-circuit voltage up to 37 V and a short-circuit current of 6.2 μA, which can be used as a sustainable power source to simultaneously and continuously light up tens of light emitting diodes (LEDs) and charge capacitors. Moreover, uniform division of the electrode into several parallel units efficiently suppresses the inner counteracting effect of undulating film and leads to an enhancement of output current by 95%. The F-TENG holds prominent durability and an excellent linear relationship between output current and flow rate, revealing its feasibility as a self-powered sensor for detecting wind speed. This work demonstrates potential applications of the triboelectric generator in gas flow harvesters, self-powered air navigation, self-powered gas sensors and wind vector sensors.

[1]  Chenguo Hu,et al.  Single-electrode-based rotating triboelectric nanogenerator for harvesting energy from tires. , 2014, ACS nano.

[2]  Sihong Wang,et al.  Self‐Powered Trajectory, Velocity, and Acceleration Tracking of a Moving Object/Body using a Triboelectric Sensor , 2014 .

[3]  Jun Chen,et al.  A self-powered triboelectric nanosensor for mercury ion detection. , 2013, Angewandte Chemie.

[4]  Junjie Bai,et al.  A Self‐Powered Angle Measurement Sensor Based on Triboelectric Nanogenerator , 2015 .

[5]  Zhong Lin Wang,et al.  Triboelectric nanogenerator as self-powered active sensors for detecting liquid/gaseous water/ethanol , 2013 .

[6]  Chengkuo Lee,et al.  An intelligent skin based self-powered finger motion sensor integrated with triboelectric nanogenerator , 2016 .

[7]  Long Lin,et al.  Motion-driven electrochromic reactions for self-powered smart window system. , 2015, ACS nano.

[8]  M. Chinchilla,et al.  Control of permanent-magnet generators applied to variable-speed wind-energy systems connected to the grid , 2006, IEEE Transactions on Energy Conversion.

[9]  Zhong Lin Wang,et al.  Segmentally structured disk triboelectric nanogenerator for harvesting rotational mechanical energy. , 2013, Nano letters.

[10]  S. Priya Modeling of electric energy harvesting using piezoelectric windmill , 2005 .

[11]  Zhong Lin Wang,et al.  Piezoelectric Nanogenerators Based on Zinc Oxide Nanowire Arrays , 2006, Science.

[12]  Yong Qin,et al.  An electrospun nanowire-based triboelectric nanogenerator and its application in a fully self-powered UV detector. , 2014, Nanoscale.

[13]  Hyeoungwoo Kim,et al.  Small scale windmill , 2007 .

[14]  D. Wollmann,et al.  Force microscopy of ion-containing polymer surfaces: morphology and charge structure , 1992 .

[15]  Jun Chen,et al.  Triboelectrification-based organic film nanogenerator for acoustic energy harvesting and self-powered active acoustic sensing. , 2014, ACS nano.

[16]  Xiaojing Mu,et al.  Elasto-Aerodynamics-Driven Triboelectric Nanogenerator for Scavenging Air-Flow Energy. , 2015, ACS nano.

[17]  C. Randall,et al.  Nonlinear contributions to the dielectric permittivity and converse piezoelectric coefficient in piezoelectric ceramics , 2006 .

[18]  Zhong Lin Wang,et al.  Flutter-driven triboelectrification for harvesting wind energy , 2014, Nature Communications.

[19]  Long Lin,et al.  Quantitative measurements of vibration amplitude using a contact-mode freestanding triboelectric nanogenerator. , 2014, ACS nano.

[20]  Zhong-Lin Wang,et al.  Vertically integrated nanogenerator based on ZnO nanowire arrays , 2011 .

[21]  Zhong Lin Wang,et al.  Hybrid triboelectric nanogenerator for harvesting water wave energy and as a self-powered distress signal emitter , 2014 .

[22]  Zhong Lin Wang,et al.  Harvesting water wave energy by asymmetric screening of electrostatic charges on a nanostructured hydrophobic thin-film surface. , 2014, ACS nano.

[23]  Jun Zhou,et al.  Fiber-based generator for wearable electronics and mobile medication. , 2014, ACS nano.

[24]  Zhong Lin Wang,et al.  Single-electrode-based sliding triboelectric nanogenerator for self-powered displacement vector sensor system. , 2013, ACS nano.

[25]  S. Iniyan,et al.  A review of wind energy technologies , 2007 .

[26]  Hengyu Guo,et al.  Flexible interdigital-electrodes-based triboelectric generators for harvesting sliding and rotating mechanical energy , 2014 .

[27]  Giuseppe Pezzotti,et al.  Raman spectroscopy of piezoelectrics , 2013 .

[28]  Zhong Lin Wang,et al.  Single-electrode-based rotationary triboelectric nanogenerator and its applications as self-powered contact area and eccentric angle sensors , 2015 .

[29]  Jun Chen,et al.  Harmonic‐Resonator‐Based Triboelectric Nanogenerator as a Sustainable Power Source and a Self‐Powered Active Vibration Sensor , 2013, Advanced materials.

[30]  P. Sharma,et al.  Piezoelectric thin-film superlattices without using piezoelectric materials , 2010 .

[31]  Yadong Jiang,et al.  Fully enclosed cylindrical single-electrode-based triboelectric nanogenerator. , 2014, ACS applied materials & interfaces.

[32]  Zhong Lin Wang,et al.  Rotary triboelectric nanogenerator based on a hybridized mechanism for harvesting wind energy. , 2013, ACS nano.

[33]  Jun Chen,et al.  Cylindrical rotating triboelectric nanogenerator. , 2013, ACS nano.

[34]  Shiyou Zhu,et al.  High-throughput screening of a CRISPR/Cas9 library for functional genomics in human cells , 2014, Nature.

[35]  Long Lin,et al.  A Hybridized Power Panel to Simultaneously Generate Electricity from Sunlight, Raindrops, and Wind around the Clock , 2015 .

[36]  Zhe Chen,et al.  A Review of the State of the Art of Power Electronics for Wind Turbines , 2009, IEEE Transactions on Power Electronics.

[37]  Zhong Lin Wang,et al.  Triboelectric nanogenerator for harvesting wind energy and as self-powered wind vector sensor system. , 2013, ACS nano.

[38]  Jie Chen,et al.  A nanogenerator for harvesting airflow energy and light energy , 2014 .

[39]  Zhong Lin Wang,et al.  Hybridized electromagnetic-triboelectric nanogenerator for scavenging biomechanical energy for sustainably powering wearable electronics. , 2015, ACS nano.