13 research outputs found
Single-Electrode-Based Rotating Triboelectric Nanogenerator for Harvesting Energy from Tires
Rotational energy is abundant and widely available in our living environment. Harvesting ambient rotational energy has attracted great attention. In this work, we report a single-electrode-based rotating triboelectric nanogenerator (SR-TENG) for converting rotational energy into electric energy. The unique advantage of introducing the single-electrode TENG is to overcome the difficulty in making the connection in harvesting rotational energy such as from a moving and rotating tire/wheel. The fabricated device consists of a rotary acrylic disc with polytetrafluoroethylene (PTFE) blades and an Al electrode fixed on the base. The systematical experiments and theoretical simulations indicate that the asymmetric SR-TENGs exhibit much better output performances than those of the symmetric TENGs at the same rotation rates. The asymmetric SR-TENG with seven PTFE units at the rotation rate of 800 r/min can deliver a maximal output voltage of 55 V and a corresponding output power of 30 μW on a load of 100 MΩ, which can directly light up tens of red light-emitting diodes. The SR-TENG has been utilized to harvest mechanical energy from rotational motion of a bicycle wheel. Furthermore, we demonstrated that the SR-TENG can be applied to scavenge wind energy and as a self-powered wind speed sensor with a sensitivity of about 0.83 V/(m/s). This study further expands the operation principle of a single-electrode-based TENG and many potential applications of TENGs for scavenging ambient rotational energy and as a self-powered environment monitoring sensor
Fully Enclosed Cylindrical Single-Electrode-Based Triboelectric Nanogenerator
We report a fully enclosed cylindrical
single-electrode-based triboelectric nanogenerator (S-TENG) consisting
of a perfluoroalkoxy (PFA) ball with surface-etched nanowires, a floating
latex balloon, and an Al electrode at the end of the balloon. The
mechanism of the S-TENG includes two independent processes: contact-induced
electrification between the PFA ball and the balloon and electrostatic
induction between the charged PFA ball and the Al electrode. The relationships
between the electrical outputs and the sliding distance of the PFA
ball were systematically investigated by combining experimental results
with finite-element calculations. The S-TENG delivers an output voltage
up to 236 V and a short-circuit current of 4.8 μA, which can
be used as a direct power source for driving tens of green light-emitting
diodes (LEDs). The S-TENG is a potential power source for gas-flow
harvesters, air navigation, and environmental monitoring
Electret Film-Enhanced Triboelectric Nanogenerator Matrix for Self-Powered Instantaneous Tactile Imaging
We
report the first self-powered electronic skin that consists of light-emitting
diode (LED) and triboelectric nanogenerator (TENG) arrays that can
be utilized for spatially mapping applied instantaneous-touch events
and tracking the movement location of the target object by recording
the electroluminescent signals of the LEDs without external power
sources. The electret film-based TENG can deliver an open-circuit
voltage of about −1070 V, a short-circuit current density of
10 mA/m<sup>2</sup>, and a power density of 288 mW/m<sup>2</sup> on
an external load of 100 MΩ. The LEDs can be turned on locally
when the back surface of the active matrix is touched, and the intensity
of the emitted light depends on the magnitude of the applied local
pressure on the device. A constructed active matrix of the LED-TENG
array (8 × 7 pixels) can achieve self-powered, visual, and high-resolution
tactile sensing by recording the electroluminescent signals from all
of the pixels, where the active size of each pixel can be decreased
to 10 mm<sup>2</sup>. This work is a significant step forward in self-powered
tactile-mapping visualization technology, with a wide range of potential
applications in touchpad technology, personal signatures, smart wallpapers,
robotics, and safety-monitoring devices
Triboelectric Nanogenerator for Harvesting Wind Energy and as Self-Powered Wind Vector Sensor System
We report a triboelectric nanogenerator (TENG) that plays dual roles as a sustainable power source by harvesting wind energy and as a self-powered wind vector sensor system for wind speed and direction detection. By utilizing the wind-induced resonance vibration of a fluorinated ethylene–propylene film between two aluminum foils, the integrated TENGs with dimensions of 2.5 cm × 2.5 cm × 22 cm deliver an output voltage up to 100 V, an output current of 1.6 μA, and a corresponding output power of 0.16 mW under an external load of 100 MΩ, which can be used to directly light up tens of commercial light-emitting diodes. Furthermore, a self-powered wind vector sensor system has been developed based on the rationally designed TENGs, which is capable of detecting the wind direction and speed with a sensitivity of 0.09 μA/(m/s). This work greatly expands the applicability of TENGs as power sources for self-sustained electronics and also self-powered sensor systems for ambient wind detection
Triboelectric Nanogenerator for Harvesting Wind Energy and as Self-Powered Wind Vector Sensor System
We report a triboelectric nanogenerator (TENG) that plays dual roles as a sustainable power source by harvesting wind energy and as a self-powered wind vector sensor system for wind speed and direction detection. By utilizing the wind-induced resonance vibration of a fluorinated ethylene–propylene film between two aluminum foils, the integrated TENGs with dimensions of 2.5 cm × 2.5 cm × 22 cm deliver an output voltage up to 100 V, an output current of 1.6 μA, and a corresponding output power of 0.16 mW under an external load of 100 MΩ, which can be used to directly light up tens of commercial light-emitting diodes. Furthermore, a self-powered wind vector sensor system has been developed based on the rationally designed TENGs, which is capable of detecting the wind direction and speed with a sensitivity of 0.09 μA/(m/s). This work greatly expands the applicability of TENGs as power sources for self-sustained electronics and also self-powered sensor systems for ambient wind detection
Triboelectric Nanogenerator for Harvesting Wind Energy and as Self-Powered Wind Vector Sensor System
We report a triboelectric nanogenerator (TENG) that plays dual roles as a sustainable power source by harvesting wind energy and as a self-powered wind vector sensor system for wind speed and direction detection. By utilizing the wind-induced resonance vibration of a fluorinated ethylene–propylene film between two aluminum foils, the integrated TENGs with dimensions of 2.5 cm × 2.5 cm × 22 cm deliver an output voltage up to 100 V, an output current of 1.6 μA, and a corresponding output power of 0.16 mW under an external load of 100 MΩ, which can be used to directly light up tens of commercial light-emitting diodes. Furthermore, a self-powered wind vector sensor system has been developed based on the rationally designed TENGs, which is capable of detecting the wind direction and speed with a sensitivity of 0.09 μA/(m/s). This work greatly expands the applicability of TENGs as power sources for self-sustained electronics and also self-powered sensor systems for ambient wind detection
Triboelectric Nanogenerator for Harvesting Wind Energy and as Self-Powered Wind Vector Sensor System
We report a triboelectric nanogenerator (TENG) that plays dual roles as a sustainable power source by harvesting wind energy and as a self-powered wind vector sensor system for wind speed and direction detection. By utilizing the wind-induced resonance vibration of a fluorinated ethylene–propylene film between two aluminum foils, the integrated TENGs with dimensions of 2.5 cm × 2.5 cm × 22 cm deliver an output voltage up to 100 V, an output current of 1.6 μA, and a corresponding output power of 0.16 mW under an external load of 100 MΩ, which can be used to directly light up tens of commercial light-emitting diodes. Furthermore, a self-powered wind vector sensor system has been developed based on the rationally designed TENGs, which is capable of detecting the wind direction and speed with a sensitivity of 0.09 μA/(m/s). This work greatly expands the applicability of TENGs as power sources for self-sustained electronics and also self-powered sensor systems for ambient wind detection