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All-Ceramic Flexible Piezoelectric Energy Harvester

机译：All-Ceramic Flexible Piezoelectric Energy Harvester

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摘要

With the rapid development of self-powered electronics such as wearables,implantable devices, and sensor networks, there is an increasing demand forpower sources that have a high power density and a long lifespan to keep theentire system operational. Flexible piezoelectric materials with the capabilityof mechanical-to-electrical energy conversion have attracted significantinterest because of their immense potential for harvesting human biomechanicalenergy. Herein, 3 mol.% yttrium stabilized zirconia ribbon ceramicis selected as a unique substrate to manufacture a large-scale and all-ceramicflexible Pb(Zr_(0.52)Ti_(0.48))O_3 piezoelectric energy harvester via the cost-effectiveone-step process. The flexible piezoelectric energy harvester delivers excellentperformance with an open-circuit voltage of ~105 V and short-circuitcurrent of ~0.58 μA under mechanical strain equivalent to human movement.Moreover, the output voltage of a flexible piezoelectric energy harvester varieslinearly with strain, allowing it a promising candidate as a self-powered strainsensor. Of particular importance is that a large-scale piezoelectric energy harvester(4 × 4 cm~2) can simultaneously light up eight commercial light emittingdiodes without any external power source and circuit. This research providesan innovative approach to the fabrication of high-performance and large-scaleflexible piezoelectric energy harvesters as well as self-powered micromechanicaldevices.

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