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WEB Lead-free Nanofibers for Energy Harvesting Applications

Thursday (24.09.2020)
16:25 - 16:40 Z: Special Symposia I
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Renewable energy harvesting has taken a central role in tackling climate change. On a big scale, renewable energy is mainly harvested through solar, geothermal, and wind turbines; however, on a microscale, piezoelectric materials based Micro-electromechanical systems (MEMS) have been the most widely used to harness energy from sources of vibrations. The global energy harvesting market is predicted to experience a significant growth over the coming years, coupled with this the demand for non-toxic materials for electronics has seen an increasing trend. Currently, in most vibrational energy harvesting applications, the Lead Zirconate Titanate (PZT) finds overwhelming usage owing to its high piezoelectric properties. However, the toxicity of PZT has prompted materials scientists to develop alternative lead-free materials to match the performance of PZT. Among the alternatives, the Potassium Sodium Niobate (KNN) is at the forefront intended to replace the lead-based piezoelectric materials. Having a high piezoelectric property and relatively high curie temperature, KNN promises to be a bio-compatible alternative to replace PZT in energy harvesting applications. In this work, the KNN nanofibers were prepared by electrospinning technique and later doped with cations to enhance the piezoelectric properties. We fabricated an energy harvesting device based on KNN nanofibers to demonstrate the efficacy of the application of lead-free nanofibers for energy harvesting applications.

Arun Ichangi
University of Cologne
Additional Authors:
  • Dr. Yonatan Calahorra
    University of Cambridge
  • Dr. Thomas Fischer
    University of Cologne
  • Prof. Dr. Sanjay Mathur
    University of Cologne