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Studying the Pyroelectric Effects of LiNbO3 Modified Composites
Fan Zhang1, Hua Kang1, Yixuan Lin1
1Department of Chemistry, Renmin University of China, Beijing, 100872, People's Republic of China.
Nanoscale Research Letters
|May 14, 2020
Summary
Flexible pyroelectric films using lithium niobate (LiNbO3) micro-particles, polypropylene, and carbon nanotubes were fabricated. These novel composite films offer enhanced mechanical properties for energy harvesting and sensor applications.
Area of Science:
- Materials Science
- Solid State Physics
- Nanotechnology
Background:
- Lithium niobate (LiNbO3) is a pyroelectric material with potential for direct heat-to-electricity conversion.
- Its applications are limited by mechanical fragility and inflexibility.
- Developing flexible pyroelectric materials is crucial for advanced devices.
Purpose of the Study:
- To fabricate flexible pyroelectric films incorporating LiNbO3.
- To enhance the mechanical properties of LiNbO3 for broader applications.
- To investigate the pyroelectric performance of the novel composite films.
Main Methods:
- Fabrication of composite films using LiNbO3 micro-particles, polypropylene (PP) matrix, and multiwalled carbon nanotubes (MWCNTs).
- Characterization of pyroelectric effects by monitoring nanoparticle self-assembly.
- Measurement of output pyroelectric currents.
Main Results:
- Successful fabrication of flexible LiNbO3-based pyroelectric composite films.
- Demonstrated pyroelectric properties of the LN/PP/MWCNT composites.
- Observation of enhanced pyroelectric performance compared to bulk LiNbO3.
Conclusions:
- The developed flexible pyroelectric films overcome the mechanical limitations of LiNbO3.
- These composites exhibit significant pyroelectric properties.
- Potential applications in flexible energy harvesters and thermal sensors.
