聚偏氟乙烯
材料科学
纳米陶瓷
复合材料
耗散因子
电介质
扫描电子显微镜
陶瓷
聚合物
分析化学(期刊)
化学
光电子学
色谱法
作者
Amit Kumar,Archana Kumar,K. Prasad
标识
DOI:10.1002/pssa.202100382
摘要
The mechanical impact‐based energy harvesting characteristics of 0–3 ϕ Ba 0.85 Ca 0.15 Zr 0.10 Ti 0.90 O 3 /(1− ϕ )polyvinylidene fluoride–polytetrafluoroethylene (BCZT/PVDF–PTFE); volume fraction (0 ≤ ϕ ≤ 0.25) nanocomposites, fabricated using a melt‐mixing method, are presented. A scanning electron microscope is utilized to investigate the distribution of BCZT nanoceramic powder as filler in the blended polymer (PVDF–PTFE; 80:20). The X‐ray diffraction method is applied to ascertain the formations of BCZT and BCZT/PVDF–PTFE. The values of apparent porosity, water absorption, shore D hardness, dielectric constant ( ε r ), tangent loss (tan δ ), piezoelectric charge coefficient ( d 33 ) and voltage constant ( g 33 ), and figure of merit (FM) are found to increase upon increasing ϕ . A significant increment in the impact‐generated electric voltage (25.38–77.73 V) and energy (9.42–243.9 nJ) is noticed with the increasing ϕ . In addition, the small values of water absorption (<0.091%) and tan δ (≈10 −2 ) with relatively higher values of ε r , d 33 , g 33 , FM, and shore D hardness, power out ( P dc = 0.47 mW using 470 Ω resistive load ϕ = 0.25 sample) as well as improved voltage generation and energy harvesting characteristics, prefigure the promise of the present composite system a superior lead‐free alternative for the applications in energy harvesting, detection/sensing, and structural health monitoring.
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