Results 281 to 290 of about 321,908 (334)

Atomic‐Scale High‐Entropy Design for Superior Capacitive Energy Storage Performance in Lead‐Free Ceramics

Advances in Materials
Dielectric ceramics with high energy storage performance are crucial for the development of advanced high‐power capacitors. However, achieving ultrahigh recoverable energy storage density and efficiency remains challenging, limiting the progress of ...
Dengfeng Li, Zihao Zheng, Bin Yang, Longyu Chen, Dean Shi, Jinming Guo, Ce‐Wen Nan   +6 more
semanticscholar   +1 more source

Large energy-storage density in transition-metal oxide modified NaNbO3–Bi(Mg0.5Ti0.5)O3 lead-free ceramics through regulating the antiferroelectric phase structure

, 2020
Lead-free antiferroelectric (AFE) ceramics have attracted increasing attention in recent years for application in high-power capacitors owing to both environmental friendliness and high energy density.
Ao Tian, R. Zuo, H. Qi, M. Shi
semanticscholar   +1 more source

Ultrahigh Piezoelectric Response Obtained by Artificially Generating a Large Internal Bias Field in BiFeO3–BaTiO3 Lead‐Free Ceramics

Advanced Functional Materials
Piezoelectric actuators are vital devices that convert electrical signals into mechanical strain, offering rapid and precise responses. Lead‐based piezoceramics have traditionally been the preferred choice for commercial piezoelectric actuators, while ...
Jia-Huei Lin, Fu Lv, Zijian Hong, Bing Liu, Yongjun Wu, Yuhui Huang   +5 more
semanticscholar   +1 more source

Superior energy storage performance of BiFeO3-BaTiO3-CaHfO3 lead-free ceramics

Journal of Materials Chemistry A
Lead-free ceramics have received considerable research interest because of the environmentally-friendly characteristics and superb performance in energy storage applications, which are critical for pulsed power electronic systems.
Jianwei Zhao, Hongtian Li, Yuxiao Du, Xiaoxin Chen, Hailan Qin, Jinming Wang, Tingnan Yan, Shuhui Yu, Yongming Hu, Dawei Wang   +9 more
semanticscholar   +1 more source

Perovskite Lead-Free Piezoelectric Ceramics

2011
Lead zirconate titanate (PZT)-based piezoelectric materials are the most widely used piezoelectric materials for electromechanical devices. However, due to the toxicity of lead, there is a strong interest in the development of environmental friendly lead-free piezoelectrics.
Hyeong Jae Lee, Shujun Zhang
openaire   +1 more source

Selection of Lead‐Free Piezoelectric Ceramics

International Journal of Applied Ceramic Technology, 2013
Lead‐free piezoelectric ceramics are extensively investigated for the alternatives of lead‐based piezoceramics. ( K , N a) N b O 3 ...
Gaurav Vats, Rahul Vaish
openaire   +1 more source

Na0.5K0.5NbO3–BiFeO3 lead-free piezoelectric ceramics

Journal of Physics and Chemistry of Solids, 2008
Abstract Lead-free (Na 0.5 K 0.5 )NbO 3 -based piezoelectric ceramics were successfully fabricated by substituting with a small amount of BiFeO 3 (BF). Difficulty in sintering of pure NKN ceramics can be eased by adding a few molar percent of BF, and the crystalline structure is also changed, leading to a morphotropic phase boundary (MPB) between ...
Ruzhong Zuo, Chun Ye, Xusheng Fang
openaire   +1 more source

Lead-free ceramics for pyroelectric applications

Journal of Applied Physics, 2008
The use of lead-free materials has recently become a very important issue in environmental protection of the earth. Two groups of lead-free ceramics, (K0.5,Na0.5)NbO3 based (KNN) and Bi1−y(NaxK1−x)yTiO3 based (BNKT), were studied for their thermal, dielectric, and pyroelectric properties as candidates for pyroelectric sensor applications.
Lau, ST, Cheng, CH, Choy, SH, Lin, D, Kwok, KW, Chan, HLW   +5 more
openaire   +2 more sources

(Na0.5K0.5)NbO3–LiTaO3 lead-free piezoelectric ceramics

Materials Letters, 2005
Lead-free piezoelectric ceramics were prepared in the system (1−x)(Na0.5K0.5)NbO3–xLiTaO3 following the conventional mixed oxide route. The effect of cationic substitution of lithium for sodium and potassium in the A sites and tantalum for niobite in the B sites in (Na0.5K0.5)NbO3 (NKN) perovskite lattice on symmetry and physical properties were ...
Yiping Guo, Ken-ichi Kakimoto, Hitoshi Ohsato   +2 more
openaire   +1 more source

Realizing superior energy storage properties in lead-free ceramics via a macro-structure design strategy

, 2020
Based on the principle of sustainable development theory, lead-free ceramics are regarded as an excellent candidate in dielectrics for numerous pulsed power capacitor applications due to their outstanding thermal stability and environmental friendliness.
Fei Yan, H. Bai, Xiaofeng Zhou, Guanglong Ge, Guohui Li, B. Shen, J. Zhai   +6 more
semanticscholar   +1 more source