Journal
SMART MATERIALS AND STRUCTURES
Volume 28, Issue 9, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-665X/ab3232
Keywords
nanocomposite piezoelectric generator; high stretchability; human motion energy harvesting; self-powered sensor
Funding
- National Science Foundation of China [51605449, 61471326, 51705476]
- Shanxi Province Applied Fundamental Research Program [201601D021070]
- Shanxi '1331 Project' Key Subject Construction [1331KSC]
- [BKY-2018-04]
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The development of stretchable nanogenerators has attracted intensive attentions for their promising applications in wearable electronics recently. Here, a newly high-performance stretchable PZT particles/Cu@Ag branch nanofibers (BNFs) nanocomposite piezoelectric generator (NCPG) is reported. The uniform mixture of PZT particles and Cu@Ag BNFs is blended into silicone rubber matrix that exhibits remarkably piezoelectric, mechanical and electrical characteristics. Owing to the similar molding method and the identical elastic matrix, the piezoelectric layer and the electrode layers could be completely integrated into stretchable NCPG based on all-in-one structure, which reveals high output performances (Vpeak-peak approximate to 61 V, Ipeak-peak approximate to 1.1 mu A, 22.36 mu w cm(-3)). The generated electricity is utilized to directly light five green emitting diodes (LEDs) and to drive a digital thermometer after stored in capacitor under the mechanical tensile strain stimulation. Moreover, the stretchable NCPG could act as a self-powered body motion sensor for distinguishing the bending angles and frequencies of the knee joint. This work provides a novel design idea for stretchable nanogenerators and shows great potential applications in artificial intelligence, medical diagnosis and movement entertainment.
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