scholarly journals Bioinspired elastic piezoelectric composites for high-performance mechanical energy harvesting

2018 ◽  
Vol 6 (30) ◽  
pp. 14546-14552 ◽  
Author(s):  
Yong Zhang ◽  
Chang Kyu Jeong ◽  
Tiannan Yang ◽  
Huajun Sun ◽  
Long-Qing Chen ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Polymer Composites ◽  
Composite Structures ◽  
High Performance ◽  
Mechanical Energy ◽  
Piezoelectric Composites ◽  
Piezoelectric Polymer

A bioinspired architecture of piezoceramics is developed for new composite structures overcoming the major limitations of the current piezoelectric polymer composites.

Porous, Multi-layered Piezoelectric Composites Based on Highly Oriented Pzt/pvdf Electrospinning Fibers for High-performance Piezoelectric Nanogenerators

2021 ◽  
Author(s):  
Xiangxin Du ◽  
Zheng Zhou ◽  
Zhao Zhang ◽  
Liqin Yao ◽  
Qilong Zhang ◽  
...  
Keyword(s):  
Porous Structure ◽  
High Performance ◽  
Mechanical Energy ◽  
High Sensitivity ◽  
Fiber Composites ◽  
Piezoelectric Composites ◽  
Β Phase ◽  
Energy Harvesting Devices ◽  
Piezoelectric Nanogenerators ◽  
Piezoelectric Fiber

Abstract Piezoelectric nanogenerators (PENGs) that can harvest mechanical energy from ambient environment have broad prospects for multi-functional applications. Here, multi-layered piezoelectric composites with a porous structure based on highly oriented PZT/PVDF electrospinning fibers are prepared via a laminating method to construct high-performance PENGs. PZT particles as piezoelectric reinforcing phases are embedded in PVDF fibers and facilitate the formation of polar β phase in PVDF. The multi-layered, porous structure effectively promotes the overall polarization and surface bound charge density, resulting in highly efficient electromechanical conversion. The PENG based on 10 wt.% PZT/PVDF composite fibers with a 220 µm film thickness output an optimal voltage of 62.0 V and a power of 136.9 μW, which is 3.4 and 6.5 times the voltage and power of 10wt.% PZT/PVDF casting film-based PENG, respectively. Importantly, the PENG shows a high sensitivity of 12.4 VN-1, presenting a significant advantage in comparison to PENGs with other porous structures. In addition, the composites show excellent flexibility with a Young’s modulus of 227.2 MPa and an elongation of 262.3%. This work shows great potential application of piezoelectric fiber composites in flexible energy harvesting devices.

scholarly journals Ultrastable and High-Performance Silk Energy Harvesting Textiles

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Chao Ye ◽  
Shaojun Dong ◽  
Jing Ren ◽  
Shengjie Ling
Keyword(s):  
Energy Harvesting ◽  
High Performance ◽  
Mechanical Energy ◽  
Wearable Electronics ◽  
High Power Output ◽  
Severe Change ◽  
Interactive Interfaces ◽  
Application Requirements ◽  
Intelligent Clothing

AbstractEnergy harvesting textiles (EHTs) have attracted much attention in wearable electronics and the internet-of-things for real-time mechanical energy harvesting associated with human activities. However, to satisfy practical application requirements, especially the demand for long-term use, it is challenging to construct an energy harvesting textile with elegant trade-off between mechanical and triboelectric performance. In this study, an energy harvesting textile was constructed using natural silk inspired hierarchical structural designs combined with rational material screening; this design strategy provides multiscale opportunities to optimize the mechanical and triboelectric performance of the final textile system. The resulting EHTs with traditional advantages of textiles showed good mechanical properties (tensile strength of 237 ± 13 MPa and toughness of 4.5 ± 0.4 MJ m−3 for single yarns), high power output (3.5 mW m−2), and excellent structural stability (99% conductivity maintained after 2.3 million multi-type cyclic deformations without severe change in appearance), exhibiting broad application prospects in integrated intelligent clothing, energy harvesting, and human-interactive interfaces.

Tetragonal BaTiO3 nanowires: a template-free salt-flux-assisted synthesis and its piezoelectric response based on mechanical energy harvesting

2019 ◽  
Vol 7 (27) ◽  
pp. 8277-8286 ◽  
Author(s):  
Thitirat Charoonsuk ◽  
Saichon Sriphan ◽  
Chanisa Nawanil ◽  
Narong Chanlek ◽  
Wanwilai Vittayakorn ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
High Performance ◽  
Mechanical Energy ◽  
Salt Flux ◽  
Lead Free ◽  
Piezoelectric Response ◽  
Template Free

This research successfully demonstrated a facile, effective and scalable preparation of BaTiO3 nanowires (BT-NWs) via the template-free salt flux assisted method. High-performance lead-free flexible piezoelectric nanogenerator using BT-NWs was proposed in this work.

High-performance piezoelectric-energy-harvester and self-powered mechanosensing using lead-free potassium–sodium niobate flexible piezoelectric composites

2018 ◽  
Vol 6 (34) ◽  
pp. 16439-16449 ◽  
Author(s):  
Mengjun Wu ◽  
Ting Zheng ◽  
Haiwu Zheng ◽  
Jifang Li ◽  
Weichao Wang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
High Performance ◽  
Energy Harvester ◽  
Lead Free ◽  
Sodium Niobate ◽  
Potassium Sodium Niobate ◽  
Piezoelectric Composites ◽  
Potassium Sodium ◽  
Piezoelectric Energy ◽  
Self Powered

A flexible piezoelectric nanogenerator (PENG) was fabricated based on a new inorganic piezoelectric KNN–BNZ–AS–Fe, which exhibited the great potential in energy harvesting and self-powered mechanosensing.

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