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  • Lithium-doped zinc oxide nanowires-polymer composite for high performance flexible piezoelectric nanogenerator.

Lithium-doped zinc oxide nanowires-polymer composite for high performance flexible piezoelectric nanogenerator.

ACS nano (2014-09-30)
Sung-Ho Shin, Young-Hwan Kim, Min Hyung Lee, Joo-Yun Jung, Jae Hun Seol, Junghyo Nah
ABSTRACT

We present a method to develop high performance flexible piezoelectric nanogenerators (NGs) by employing Li-doped ZnO nanowires (NWs). We synthesized Li-doped ZnO NWs and adopted them to replace intrinsic ZnO NWs with a relatively low piezoelectric coefficient. When we exploited the ferroelectric phase transition induced in Li-doped ZnO NWs, the performance of the NGs was significantly improved and the NG fabrication process was greatly simplified. In addition, our approach can be easily expanded for large-scale NG fabrication. Consequently, the NGs fabricated by our simple method exhibit the excelling output voltage and current, which are stable and reproducible during periodic bending/releasing measurement over extended cycles. In addition, output voltage and current up to ∼ 180 V and ∼ 50 μA, respectively, were obtained in the large-scale NG. The approach introduced here extends the performance limits of ZnO-based NGs and their potentials in practical applications.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Lithium nitrate, BioUltra, ≥99.0% (calc. on dried substances, T)
Sigma-Aldrich
Lithium nitrate, 99.99% trace metals basis
Sigma-Aldrich
Lithium nitrate, ReagentPlus®
Sigma-Aldrich
Hexamethylenetetramine, ACS reagent, ≥99.0%
Sigma-Aldrich
Hexamethylenetetramine, ReagentPlus®, 99%
Sigma-Aldrich
Hexamethylenetetramine, puriss. p.a., reag. Ph. Eur., ≥99.5% (calc. to the dried substance)
Sigma-Aldrich
Hexamethylenetetramine, meets analytical specification of Ph. Eur., BP, 99-100.5% (calc. to the dried substance)