Potential role of motion for enhancing maximum output energy of triboelectric nanogenerator

Although triboelectric nanogenerator (TENG) has been explored as one of the possible candidates for the auxiliary power source of portable and wearable devices, the output energy of a TENG is still insufficient to charge the devices with daily motion. Moreover, the fundamental aspects of the maximum possible energy of a TENG related with human motion are not understood systematically. Here, we confirmed the possibility of charging commercialized portable and wearable devices such as smart phones and smart watches by utilizing the mechanical energy generated by human motion. We confirmed by theoretical extraction that the maximum possible energy is related with specific form factors of a TENG. Furthermore, we experimentally demonstrated the effect of human motion in an aspect of the kinetic energy and impulse using varying velocity and elasticity, and clarified how to improve the maximum possible energy of a TENG. This study gives insight into design of a TENG to obtain a large amount of energy in a limite...

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

[2]  Long Lin,et al.  Grating‐Structured Freestanding Triboelectric‐Layer Nanogenerator for Harvesting Mechanical Energy at 85% Total Conversion Efficiency , 2014, Advanced materials.

[3]  Jae-Young Choi,et al.  Fully Rollable Transparent Nanogenerators Based on Graphene Electrodes , 2010, Advanced materials.

[4]  J. Wu,et al.  High sensitivity wrist-worn pulse active sensor made from tellurium dioxide microwires , 2015 .

[5]  Long Lin,et al.  Nanoscale triboelectric-effect-enabled energy conversion for sustainably powering portable electronics. , 2012, Nano letters.

[6]  J. Wu,et al.  High-output current density of the triboelectric nanogenerator made from recycling rice husks , 2016 .

[7]  Zhong Lin Wang,et al.  Effective energy storage from a triboelectric nanogenerator , 2016, Nature Communications.

[8]  Zhong Lin Wang,et al.  Human skin based triboelectric nanogenerators for harvesting biomechanical energy and as self-powered active tactile sensor system. , 2013, ACS nano.

[9]  Zhong Lin Wang,et al.  Pulsed nanogenerator with huge instantaneous output power density. , 2013, ACS nano.

[10]  Zhong Lin Wang,et al.  Power-generating shoe insole based on triboelectric nanogenerators for self-powered consumer electronics , 2013 .

[11]  Tao Jiang,et al.  Spring-assisted triboelectric nanogenerator for efficiently harvesting water wave energy , 2017 .

[12]  Chi Zhang,et al.  High power triboelectric nanogenerator based on printed circuit board (PCB) technology , 2015, Nano Research.

[13]  Long Lin,et al.  Pyroelectric nanogenerators for harvesting thermoelectric energy. , 2012, Nano letters.

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

[15]  B. Grzybowski,et al.  The Mosaic of Surface Charge in Contact Electrification , 2011, Science.

[16]  Zhong Lin Wang,et al.  Theoretical study of contact-mode triboelectric nanogenerators as an effective power source , 2013 .

[17]  S. Beeby,et al.  Energy harvesting vibration sources for microsystems applications , 2006 .

[18]  Jie Wang,et al.  Standards and figure-of-merits for quantifying the performance of triboelectric nanogenerators , 2015, Nature Communications.

[19]  Zhong Lin Wang,et al.  Flexible triboelectric generator , 2012 .