Journal of Materials Science Materials in Electronics, Год журнала: 2024, Номер 35(29)
Опубликована: Окт. 1, 2024
Язык: Английский
Small, Год журнала: 2024, Номер 20(24)
Опубликована: Янв. 2, 2024
Abstract Transparent dielectric ceramics are splendid candidates for transparent pulse capacitors (TPCs) due to cycle stability and large power density. However, the performance service life of TPCs at present threatened by overheating damage caused loss. Here, a cooperative optimization strategy microstructure control superparaelectric regional regulation is proposed simultaneously achieve excellent energy storage real‐time temperature monitoring function in NaNbO 3 ‐based ceramics. By introducing aliovalent ions oxides with bandgap energy, size polar nanoregions continuously reduced. Due combined effect increased relaxor behavior fine grains, comprehensive performances obtained through doping appropriate amounts Bi, Yb, Tm, Zr, Ta, Hf A‐ B‐sites matrix, including recoverable density (5.39 J cm −3 ), extremely high efficiency (91.97%), ultra‐fast discharge time (29 ns), superior optical transmittance (≈47.5% 736 nm). Additionally, phenomenon abnormal fluorescent negative thermal expansion realized activation mechanism surface phonon temperatures that can promote formation [Yb···O]‐Tm 3+ pairs, showing great potential TPCs. This research provides ideas developing electronic devices multiple functionalities.
Язык: Английский
Процитировано
20
Advanced Materials, Год журнала: 2024, Номер unknown
Опубликована: Сен. 19, 2024
Abstract Considering the large demand for electricity in era of artificial intelligence and big data, there is an urgent need to explore novel energy storage media with higher density intelligent temperature self‐check functions. High‐entropy (HE) ceramic capacitors are great significance because their excellent efficiency high power ( P D ). However, contradiction between configurational entropy polarization traditional HE systems greatly restrains increase density. Herein, effectively solved by regulating octahedral tilt cationic displacement ABO 3 ‐type perovskite ceramics, i.e., (1‐ x )[0.6(Bi 0.47 Na Yb 0.03 Tm 0.01 )TiO ‐0.4(Ba 0.5 Sr ]‐ Sr(Zr Hf )O (BNYTT‐BST‐ SZH). Combining tape‐casting process cold isostatic pressing, optimal BNYTT‐BST‐0.06SZH displays a recoverable (10.46 J cm −3 ) at 685 kV −1 (332.88 MW More importantly, due Tm/Yb codoping, abnormal fluorescent negative thermal expansion real‐time sensing developed, thus application fault detection warning high‐voltage transmission line conceptualized. This study provides effective strategy enhancing energy‐storing ceramics offers promising material overcoming problems insufficient capacitor runaway terminal communication.
Язык: Английский
Процитировано
19
Acta Materialia, Год журнала: 2024, Номер 276, С. 120109 - 120109
Опубликована: Июнь 13, 2024
Язык: Английский
Процитировано
18
Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 154150 - 154150
Опубликована: Июль 20, 2024
Язык: Английский
Процитировано
6
Ceramics International, Год журнала: 2024, Номер 50(16), С. 27661 - 27670
Опубликована: Май 16, 2024
Язык: Английский
Процитировано
3
Small, Год журнала: 2024, Номер unknown
Опубликована: Дек. 15, 2024
The ultrafast charge/discharge rate and high power density (P
Язык: Английский
Процитировано
2
Опубликована: Янв. 1, 2024
Since recently, lead-free dielectric ceramics have garnered significant interest for their high-power density and rapid charge-discharge capabilities. Nonetheless, practical application is still limited by relatively low energy storage efficiency. To address this issue, a new class of relaxor ferroelectric ((1-x)(Bi0.5Na0.5)0.7Sr0.3TiO3-xCa(Nb0.5Al0.5)O3, with xfrom 0.00 to 0.16) was formulated synthesized in the present work using solid-state reaction method. Special attention paid effect multiscale structure regulation on properties ceramics. All exhibited characteristics, which increased added content Ca(Nb0.5Al0.5)O3 (CNA). Significant achievements been made multi-scale characteristics these In particular, ultrahigh efficiency (10.15 J/cm3 86.2%, respectively) were realized ceramic x = 0.14. This optimized composition also displayed good temperature stability at 20-140 oC excellent frequency range 1-200 Hz. Furthermore, outstanding charge discharge (current CD, power PD, time t0.9 1257 A/cm2, 377 MW/cm3, 45.8 ns, obtained. The experimental study, finite element analysis, first-principles calculations confirmed that features, such as nano-scale domains, large band gap, small grain size, promoted addition CNA, are all beneficial improvement performance, opening up prospects advanced capacitors.
Язык: Английский
Процитировано
0
International Journal of Applied Ceramic Technology, Год журнала: 2024, Номер 22(1)
Опубликована: Авг. 21, 2024
Abstract Antiferroelectric (AFE) Pb 0.96 La 0.04 Zr 0.90 Ti 0.10 O 3 (PLZT) and AgNbO (AN) ceramics were fabricated codoped with 1 mol% Er various contents of Yb 3+ ions. The exhibit good energy storage performances electric‐field‐controlled photoluminescence ( E ‐PL) intensity modulations, both which are attributed to the reversible AFE‐ferroelectric phase transition that accompanies a structural evolution. Accordingly, noncontact charge/discharge monitor is proposed based on ‐PL effect, convenient safe for high‐energy density capacitors. Besides, PLZT AN opposite behaviors caused due different crystal space group transitions.
Язык: Английский
Процитировано
0
Journal of Materials Science Materials in Electronics, Год журнала: 2024, Номер 35(29)
Опубликована: Окт. 1, 2024
Язык: Английский
Процитировано
0