Article
Materials Science, Multidisciplinary
Wei Liu, Haoxin Sun, Zhonghua Li, Jianhong Wang, Peikang Bai
Summary: Porous honeycomb lead zirconate titanate (PZT) ceramics with ordered pore channels were fabricated through ionotropic gelation. Cement-containing piezoelectric composites were created by casting piezoelectric cement/PZT paste with different mass fractions of PZT into the porous ceramics. The composites showed excellent electromechanical coupling behavior and proved to be suitable for structure health monitoring.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Ceramics
Huanghuang Huang, Xiong Zhou, Zhichao Liu, Fazhou Wang
Summary: This study investigated the influence of carbon black (CB) and carbon nanotube (CNT) on the mechanical performance and piezoelectricity of g-C2S-based piezoelectric composite. The results showed that the addition of CB and CNT significantly improved the piezoelectric properties and compressive strength of the composite.
CERAMICS INTERNATIONAL
(2022)
Article
Construction & Building Technology
Qiyuan Xiao, Yuxin Cai, Guangcheng Long, Kunlin Ma, Xiaohui Zeng, Zhuo Tang, Wenxu Li, Haixu Wang, Jianwei Peng
Summary: Compared to other curing methods, alternating current curing (ACC) in cement-based materials has the advantages of easy operation and effective quality control. The percolation threshold of carbon black (CB) in fresh paste is determined to be 1 vol% by experiments and simulations, to lower resistivity and improve ACC efficiency. By using fixed voltage and frequency, the effect of ACC on the hydration, compressive strength, and pore structure of CB-cement conductive composite (CBCC) is studied. The results show that ACC greatly shortens setting time and increases compressive strength by improving hydration temperature, resistivity, pore structure, and capillary water absorption.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Polymer Science
Qisong Shi, Shifeng He, Yongqing He, Yibo Wu, Ruofan Liu
Summary: This study demonstrates the design and application of a multifunctional piezoelectric composite nanofiber membrane. By adding ionic liquids and ferric chloride hexahydrate (FeCl3 center dot 6H(2)O) to polyacrylonitrile (PAN), the properties of the composite nanofibers, including mechanical, piezoelectric, dielectric, and ferroelectric properties, were improved. The results show that the composite nanofibers have great potential in energy storage devices and flexible piezoelectric sensors.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Lavanya Muthusamy, Balaadithya Uppalapati, Samee Azad, Manav Bava, Goutam Koley
Summary: Self-polarized energy harvesting materials have gained attention for their simple fabrication method and versatile application potential. In this study, P(VDF-TrFE)/carbon black (CB) composite thin films were investigated, with the increase of CB content resulting in enhanced crystallinity, dipolar orientation, and piezoelectric performance. The surface roughness of the films increased with higher CB content, leading to increasing piezoelectric voltage. However, the maximum value was reached at 0.6 wt.%, after which the sample had low resistance.
Article
Mechanics
Young Cheol Choi
Summary: The study found that with the increase of CNT dosage, the temperature of the specimens also increased, but more heating cycles may lead to a decrease in heating performance. This is likely attributed to the occurrence of microcracks caused by different thermal expansion coefficients, and the additional hydrates generated by the increased temperature of the specimens.
COMPOSITE STRUCTURES
(2021)
Review
Chemistry, Multidisciplinary
Fei Teng, Jianlin Luo, Yibo Gao, Xiaoyang Zhou, Jigang Zhang, Song Gao, Shengwei Sun
Summary: CNT-modified cement-based smart material (CNTCS) has excellent electromechanical properties and can be developed as a static/dynamic intrinsic sensor for Structural Health Monitoring (SHM) after effective packaging and calibration. The dispersion methods and influence laws of CNT in the water/cement matrix were summarized, and the full-frequency domain sensing mechanism of CNTCS was analyzed. The practicality of applying CNTCS as an SHM static/dynamic intrinsic sensor was further investigated.
NANOTECHNOLOGY REVIEWS
(2021)
Article
Materials Science, Multidisciplinary
C. B. Pan, G. C. Zhao, S. M. Li, M. F. Shu, J. Wu, J. M. Z. Wang, L. H. Yin, W. H. Song, X. B. Zhu, J. Yang, Y. P. Sun
Summary: In this study, (1-x)CaBi2Nb2O9-xBaZr0.2Ti0.8O3 composite ceramics were prepared by conventional solid-state sintering, and it was found that the introduction of BaZr0.2Ti0.8O3 increased the permittivity and reduced the dielectric loss of the material. The x = 0.01 sample exhibited the optimum electrical properties and the composite materials showed good thermal depoling performance.
CURRENT APPLIED PHYSICS
(2022)
Article
Materials Science, Ceramics
Mehdi Shoorangiz, Zahra Sherafat, Elham Bagherzadeh
Summary: The emerging smart PVDF-based composites can address the intrinsic property deficiencies in their components. The properties of these composites are determined by their constituents and fabrication method. In this study, potassium sodium niobate (KNN) and MWCNTs were used as primary reinforcement and to improve electrical properties, respectively. Solution casting was employed to prepare PVDF-KNN-CNT composite films. SEM, XRD, FTIR, and TGA methods were used to characterize the composites, and dielectric, piezoelectric, and ferroelectric properties were investigated. The results showed that the composites' dielectric, piezoelectric, and ferroelectric properties strongly depend on KNN content.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Huang Hsing Pan, Ting-Zu Lai, Arnon Chaipanich, Thanyapon Wittinanon
Summary: The piezoelectric properties of a cement-based composite were investigated by adding two types of graphene. Graphene oxide (GO) decreased the relative permittivity and polarization efficiency, while multilayer graphene nanoplatelets (GNPs) improved the piezoelectric properties of the composite.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Materials Science, Multidisciplinary
Weijian Ding, Weiwei Xu, Zhijun Dong, Yuqing Liu, Quan Wang, Tomoki Shiotani
Summary: In this study, the piezoelectric properties and microstructure of cement-based piezoelectric ceramic composites (CPCs) were investigated. The hydration capacity of the cement matrix was found to have an impact on the piezoelectric properties, with the piezoelectric strain factor of hydrated cement-based composites showing a decreasing trend with age. The morphology and product structure of the composites after curing and polarization were significantly different, with the interfacial transition zone of the fresh cement-based composite differing from the hydrated cement-based composite due to insufficient binding between CSH and PZT.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Ceramics
Thanyapon Wittinanon, Rattiyakorn Rianyoi, Ruamporn Potong, Huang Hsing Pan, Arnon Chaipanich
Summary: In this study, 0-3 piezoelectric ceramic-Portland cement composites with different compositions were fabricated and investigated. The addition of epoxy resin resulted in increased density and acoustic impedance, as well as decreased porosity and dielectric constant. The piezoelectric charge coefficient decreased with increasing epoxy resin content, while the piezoelectric voltage coefficient showed a notable increase up to 3%. The optimization results showed that the BZT50ER3 composite had the best acoustic impedance and piezoelectric voltage coefficient, while the BZT60ER7 composite had the highest planar and thickness electromechanical coupling factors.
CERAMICS INTERNATIONAL
(2023)
Article
Electrochemistry
Nicolas Gauthier, Anshuman Agrawal, Olivier Dubrunfaut, Sylvain Franger, Bernard Lestriez, Jean-Claude Badot, Loic Assaud
Summary: This study aims to understand the interactions between liquid electrolyte and solid composite electrode in a Li-ion battery. By replacing the common active material with an insulating gamma-Al2O3 compound, the interaction between carbon black electronic additive and liquid electrolyte was detected. Broadband dielectric spectroscopy (BDS) and electrochemical impedance spectroscopy (EIS) were used to characterize charge transport at different scales. The influence of ion adsorption on carbon black surface on electron transport was emphasized and explained.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Pithiwat Tiantong, Theerachai Bongkarn, Rattiyakorn Rianyoi, Phongthorn Julphunthong
Summary: The objective of this study was to fabricate and investigate new smart composites as sensors and actuators in civil engineering for structural health monitoring. A novel 0-3 piezoelectric composite consisting of (K0.44Na0.52Li0.04) (Nb0.84Ta0.10Sb0.06)O3 (KNLNTS) as the piezoelectric phase and alite calcium sulfoaluminate (ACSA) cement as the matrix phase is presented. The synthesis processes of ACSA cement and KNLNTS ceramics were intensively investigated, and their properties were studied. Moreover, KNLNTS/ACSA cement composites were prepared and their performance and potential applications were investigated.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Multidisciplinary
Saman Kuntharin, Viyada Harnchana, Annop Klamchuen, Kitiphat Sinthiptharakoon, Prasit Thongbai, Vittaya Amornkitbamrung, Prinya Chindaprasirt
Summary: A strategy to enhance the energy conversion performance of a cement-based triboelectric nanogenerator (TENG) has been proposed by fabricating a cement-carbon black (CB) composite, which exhibits a 13-fold enhancement of the electrical output and the highest power density of 2.38 W/m2. The improvement is attributed to the good dispersion of conductive CB nanoparticles in the cement matrix, leading to a high dielectric constant that intensifies the triboelectric charge density of TENG.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
