Graphene oxide effects on piezoelectric, thermal, and mechanical properties of PVDF-HFP/CBT nanocomposite fibers for energy harvesting applications

IF 2.8 4区 化学 Q3 POLYMER SCIENCE
R. Gowdaman, A. Deepa
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引用次数: 0

Abstract

In this research work, the piezoelectric performance of polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) was significantly enhanced by the incorporation of copper-doped barium titanate (CBT) and graphene oxide (GO) nanofillers. A systematic study was conducted by varying the nanofiller content to 1, 2, 3, 4, and 5 wt%, followed by fabricating nanocomposite fiber mats using the electrospinning technique. This approach ensured the formation of continuous, flexible, and uniformly dispersed nanofibers, which are essential for piezoelectric applications. Multiple analytical techniques were used to characterize the developed nanofiber mats comprehensively. The electrospun nanofiber mats with varying CBT and GO concentrations were further utilized to fabricate piezoelectric nanogenerators (PENGs). These devices were subjected to electrical output testing under mechanical stimuli, specifically finger-tapping conditions, to simulate practical energy harvesting scenarios. Results showed a clear improvement in the output voltage with increasing filler content, which can be attributed to the strong interfacial interaction between the β-phase PVDF-HFP chains and the surface of the CBT and GO nanofillers. This novel nanogenerator design offers promising utility in wearable sensors, energy-harvesting systems, flexible/stretchable electronics, and self-powered devices, making it a viable candidate for the evolving field of sustainable energy and smart systems.

Abstract Image

Abstract Image

氧化石墨烯对能量收集用PVDF-HFP/CBT纳米复合纤维的压电、热学和机械性能的影响
在本研究中,掺铜钛酸钡(CBT)和氧化石墨烯(GO)纳米填料显著增强了聚偏氟乙烯-共六氟丙烯(PVDF-HFP)的压电性能。通过改变纳米填料的含量为1、2、3、4和5 wt%,然后使用静电纺丝技术制造纳米复合纤维垫,进行了系统的研究。这种方法确保了连续、灵活和均匀分散的纳米纤维的形成,这是压电应用所必需的。采用多种分析技术对所制备的纳米纤维垫进行了综合表征。利用不同浓度的氧化石墨烯和CBT的电纺丝纳米纤维垫制备压电纳米发电机。这些设备在机械刺激下,特别是手指敲击条件下进行了电输出测试,以模拟实际的能量收集场景。结果表明,随着填料含量的增加,输出电压有明显的提高,这可以归因于β相PVDF-HFP链与CBT和GO纳米填料表面之间的强界面相互作用。这种新颖的纳米发电机设计在可穿戴传感器、能量收集系统、柔性/可拉伸电子设备和自供电设备中提供了有前途的应用,使其成为可持续能源和智能系统发展领域的可行候选者。
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来源期刊
Journal of Polymer Research
Journal of Polymer Research 化学-高分子科学
CiteScore
4.70
自引率
7.10%
发文量
472
审稿时长
3.6 months
期刊介绍: Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.
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