Table of Contents
Nanomaterials, Volume 7, Issue 6 (June 2017) – 33 articles
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Cover Story (view full-size image) The combination of piezoelectric and polymer materials is an effective way to make the [...] Read more. The combination of piezoelectric and polymer materials is an effective way to make the piezoelectric nanogenerator (PENG) possess both the polymer’s optimal flexibility and the ferroelectric material’s high piezoelectric coefficient. The volume ratio of ferroelectric material in the composite is an important factor that determines the PENG’s output performance. However, a systematic theoretical study about this phenomenon is lacking in the literature. In this paper, we studied the output voltage of the BaTiO3/polydimethylsiloxane (PDMS) composite PENG with different volume ratios of evenly distributed BaTiO3 cubes, and found the optimal volume ratio (46%) of the BaTiO3 cubes. At this ratio, the PENG can output the highest voltage, resulting in a trade-off between the surface charge and capacitance of the composite PENG. These results are of practical importance to optimize PENG’s performance. View the paper