Results 271 to 280 of about 321,908 (334)

Domain Engineered Lead-Free Ceramics with Large Energy Storage Density and Ultra-High Efficiency under Low Electric Fields.

ACS Applied Materials and Interfaces, 2021
Dielectric energy storage materials are becoming increasingly popular due to their potential superiority, for example, excellent pulse performance as well as good fatigue resistance.
R. Kang, Zepeng Wang, Wenyuan Liu, Liqiang He, Xiaopei Zhu, Peng Shi, Xiaoxiao Zhang, Lixue Zhang, X. Lou   +8 more
semanticscholar   +1 more source

Simultaneous Enhancement of Piezoelectricity and Temperature Stability in KNN‐Based Lead‐Free Ceramics Via Layered Distribution of Dopants

Advanced Functional Materials, 2022
The past two decades have seen a great enhancement of piezoelectric coefficients (d33) to higher than 570 pC/N in (K, Na)NbO3 (KNN) piezoelectrics, but one notoriously unresolved issue is their severe temperature instability, obstructing them toward ...
Aizhen Song, Yixuan Liu, Tianyi Feng, Haitao Li, Yuanyuan Zhang, Xuping Wang, Lisha Liu, Boping Zhang, Jing‐Feng Li   +8 more
semanticscholar   +1 more source

Large piezoelectricity in NaNbO3-based lead-free ceramics via tuning oxygen octahedral tilt.

Materials Horizons, 2022
The development of high-performance lead-free piezoceramics for replacing Pb-based perovskites has attracted lots of attention, and comparable room-temperature piezoresponse has been realized in (Na,K)NbO3 and BaTiO3-based ceramics with local structure ...
Lu Wang, H. Qi, B. Gao, Ye Liu, Hui Liu, Jun Chen   +5 more
semanticscholar   +1 more source

Excellent energy storage properties and superior stability achieved in lead-free ceramics via a spatial sandwich structure design strategy

Journal of Materials Chemistry A, 2021
A sandwich structure design strategy was presented in this work to optimize the polarization and electric breakdown strength of lead-free ceramics, resulting in superior energy storage properties (Wrec = 6.3 J cm−3 and PD = 215 MW cm−3).
Fei Yan, Xia He, H. Bai, B. Shen, J. Zhai   +4 more
semanticscholar   +1 more source

Lead-free piezoelectric ceramics vs. PZT?

Journal of Electroceramics, 2006
Investigations in the development of lead-free piezoelectric ceramics have recently claimed properties comparable to that of PZT-based materials. In this work, the dielectric and piezoelectric properties of the various systems were contrasted in relation to their respective Curie temperatures.
Shujun Zhang, Ru Xia, Thomas R. Shrout
openaire   +1 more source

Simulation and prediction of the attenuation behaviour of the KNN–LMN–based lead-free ceramics by FLUKA code and artificial neural network (ANN)–based algorithm

Environmental technology, 2021
The significance and novelty of the present work are the preparation of the non-lead ceramic by the general formula of (1-x) K0.5Na0.5NbO3-xLa Mn0.5Ni0.5O3 (KNN–LMN) with different x ...
I. Akkurt, Parisa Boodaghi Malidarreh, Roya Boodaghi Malidarre   +2 more
semanticscholar   +1 more source

Hardening effect in lead-free piezoelectric ceramics

Journal of Materials Research, 2021
Ecologically sustainable development of piezoelectric ceramics has been the primary target of the community over the past 20 years. While the development of “soft” lead-free piezoelectric ceramics has been of high maturity, the understanding of “hard” lead-free piezoelectric ceramics is still far from satisfactory, leading to a limited chance for high ...
Trong Nghia Nguyen, Hao-Cheng Thong, Zhi-Xiang Zhu, Jing-Kai Nie, Yi-Xuan Liu, Ze Xu, Pak-Sheng Soon, Wen Gong, Ke Wang   +8 more
openaire   +1 more source

Lead-free piezoelectric ceramics and thin films

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2010
Recent progress in lead-free piezoelectric ceramics and thin films with special emphasis on alkaline niobatebased and bismuth sodium titanate-based systems is reviewed concisely. Modifications of potassium sodium niobate (KNN) ceramics are presented and subsequent improvements in the electrical properties are summarized. Special attention is devoted to
Ahmad, Safari, Maryam, Abazari
openaire   +2 more sources

Piezoelectric properties of the 3D-printed lead-free ceramics

Ferroelectrics (Print), 2022
For SLA-based piezoceramics, firstly in the present study, the density values after synthesis, dielectric characteristics and piezo modules were measured in comparison with reference data by the traditional process chain.
A. Smirnov, A. Tikhonov, O. Dubinin, S. Chugunov, Igor V. Shishkovsky   +4 more
semanticscholar   +1 more source

Realizing stable relaxor antiferroelectric and superior energy-storage properties in (Na1-x/2Lax/2)(Nb1-xTix)O3 lead-free ceramics through A/B-site complex substitution.

ACS Applied Materials and Interfaces, 2020
The development of environmentally friendly energy-storage dielectrics with high energy-storage density has attracted increasing attention in power electronics.
Jun Chen, H. Qi, R. Zuo
semanticscholar   +1 more source