期刊
NANO ENERGY
卷 27, 期 -, 页码 275-281出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2016.07.015
关键词
Biocompatibility; In vivo biomechanical energy harvesting; Mesoporous PVDF; Piezoelectric nanogenerator
类别
资金
- National Institutes of Health [R01EB021336, R01CA169365, P30CA014520, T32CA009206]
The rapid developments of implantable biomedical electronics give rise to the motivation of exploring efficient and durable self-powered charging system. In this paper, we report a mesoporous polyvinylidene fluoride (PVDF)-based implantable piezoelectric nanogenerator (NG) for in vivo biomechanical energy harvesting. The NG was built with a sponge-like mesoporous PVDF film and encapsulated by polydimethylsiloxane (PDMS). After embedding this NG into rodents, a V-oc of similar to 200 mV was produced from the gentle movement of rodent muscle. Meanwhile, no toxicity or incompatibility sign was found in the host after carrying the packaged NG for 6 weeks. Moreover, the electric output of this NG was extremely stable and exhibited no deterioration after 5 days of in vivo operation or 1.512 x 10(8) times mechanical deformation. This NG device could practically output a constant voltage of 52 mV via a 1 mu F capacitor under living circumstance. The outstanding efficiency, magnificent durability and exceptional biocompatibility promise this mesoporous PVDF-based NG in accomplishing self-powered bioelectronics with potentially lifespan operation period. (C) 2016 Published by Elsevier Ltd.
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