JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·Vol. 108
·期 8
·e20595
·
IF 3.8
Qian Qiu,Haoyu Wang,Yanghao Xu,Xinyu Chen,Xinyu Liu,Yuan Zhou,Zeyu Lv,Jinfeng Sun,Shaofei Zhang,Haibo Zhang,Abdul Manan,Gang Liu,Yan Yan
Piezoelectric ceramics, renowned for their ability to interconvert mechanical strain/stress and electrical signals, are widely utilized in diverse fields, such as electronic communications, aerospace, and national defense. Their appeal lies in their rapid response, precise motion control, and low power consumption, making them indispensable in advanced electromechanical systems. Bismuth sodium titanate (BNT)-based ceramic materials exhibit excellent strain performance and piezoelectric response, making them highly promising for applications in actuators and transducers. In this study, the piezoelectric ceramic system of (0.93− x )Bi 0.5 Na 0.5 TiO 3 −0.07BaTiO 3 − x Sr(Sn 0.5 Ta 0.4 )O 3 ( x = 0–0.02, BNBT− x SST) were synthesized using the conventional solid-state reaction method. Through a combination of composition design and phase boundary engineering, the microstructure of the ceramics is modified, and a systematic analysis of the relationship between the electrical properties and the microstructure is conducted. The results indicate that the addition of SST reduces the domain size and influences the phase evolution, gradually transitioning the ceramics from non-ergodic relaxor (NR) to ergodic relaxor (ER) state. Among all the compositions, BNBT−0.010SST exhibits outstanding performance. At a relatively low driving electric field ( E = 50 kV/cm), the maximum piezoelectric strain coefficient ( d 33 * ) reaches 632 pm/V, while under a relatively higher driving electric field ( E = 80 kV/cm), a strain response of 0.42% is achieved. This exceptional performance is believed to result from a reversible phase transition between the FE and ER states driven by the electric field. Additionally, the strain of this ceramic remains stable at over 90% within the temperature range of 30°C–100°C, demonstrating outstanding temperature-insensitive properties. At the same time, compared to other BNT-based ceramic systems, the hysteresis at room temperature has been effectively reduced, remaining below 47%. Therefore, this study provides valuable insights for improving the strain performance of NBT-based lead-free piezoelectric ceramics, offering greater possibilities for their application in piezoelectric devices.
研究领域:
材料科学
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陶瓷与复合材料
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压电材料
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功能材料
·
固态物理
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS
·
2022
·
IF 2.552
Xiyue He,Bijun Fang,Dun Wu,Xiaolong Lu,Shuai Zhang,Jianning Ding
Synthesis conditions for preparing [(Ba 0.85 Ca 0.15 ) 0.995 Nd 0.005 ](Ti 0.9 Hf 0.1 )O 3 (Nd-BCTH) nanopowders by hydrothermal method were tailored using orthogonal experiment method with three factors and three levels. X-ray diffraction measurement, field emission scanning electron microscopy, transmission electron microscopy, surface aperture adsorption analyzer, ultraviolet–visible spectra, and fluorescence spectrophotometer were used to characterized the synthesized nanopowders. Well dispersed Nd-BCTH nanopowders with excellent crystallization and luminescence properties are obtained at reaction temperature of 200 °C, 14 mol⋅L −1 alkali concentration, and 24 h reaction time without adding surfactant. The nanopowders present a pure pseudo-cubic perovskite structure with rhombohedral phase approaching the morphotropic phase boundary (MPB) at room temperature, which present nano-sized particles with slight conglomeration. Using 267 nm light exciting, strong photoluminescent emission peaks are excited at 364 nm, 422 nm and 440 nm in the Nd-BCTH nanopowders, which correlate with the transitions of Nd 3+ from 4 D 3/2 → 4 I 9/2 , 2 D 5/2 → 4 I 9/2 and 4 G 11/2 → 4 I 9/2 via two processes of non-radiative relaxation and fluorescent transition, respectively. The CIE1931 chromaticity calculation of the emission peaks and fluorescent photograph show that the Nd-BCTH nanopowders emit indigo blue fluorescent light.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2020
·
IF 4.982
Zheng Lian,Lina Guo,Shule Zhang,Yongheng Xiong,Fanyu Meng,Yiqing Zeng,Qin Zhong
Excess O 3 is invariably used to ensure the effective oxidation of NO in the industrial simultaneous desulfurization and denitration through combined ozone oxidation and absorbent scrubbing. O 3 is difficult to fully react with NO considering the short residence time of flue gas , remaining O 3 transport into the subsequent absorption device, and even its escape into the atmosphere. To study the influence of excess O 3 on NO 2 absorption in sulfite solution, we simulated an integrative process of pre-oxidation and post-absorption. NO 2 removal efficiency was improved from 36.1% to 66.5% as the mole ratio of O 3 /NO increased from 1.0 to 1.6. Additionally, the effects of temperature, pH, and reactant concentration with the remaining O 3 on NO 2 removal were evaluated. After 5 h of steady absorption, the concentration of total N species in the adsorbent was 82.8 mmol/L at a O 3 /NO mole ratio = 1.6. However, this concentration was only 51.4 mmol/L at a O 3 /NO mole ratio = 1.0, indicating that more NO 2 was absorbed, and the gas-liquid transfer of NO 2 was enhanced by the excess O 3 via oxidizing NO 2 − into NO 3 − . This work contributes to re-utilizing remaining O 3 and reducing O 3 escape in simultaneous desulfurization and denitration technology.
研究领域:
环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2019
·
IF 7.65
Yang Guo,Erzhuo Zhao,Jun Wang,Xiaoyuan Zhang,Haiou Huang,Gang Yu,Yujue Wang
The abatement of several emerging contaminants (ECs) in groundwater by conventional ozonation and three ozone-based advanced oxidation processes (AOPs) - catalytic ozonation with manganese dioxide (MnO 2 ), conventional peroxone (O 3 /H 2 O 2 ), and electro-peroxone (EP) - was compared in this study. The addition of MnO 2 , H 2 O 2 , or electro-generation of H 2 O 2 during ozonation enhanced ozone transformation to hydroxyl radicals to different extent. These changes did not considerably influence the abatement of ECs with moderate to high ozone reactivities ( k O 3 ≥500 M -1 s -1 ), whose abatements were similar with >90 % during all four processes. In comparison, the abatements of ozone-refractory ECs ( k O3 < 15 M -1 s -1 ) were lower during conventional ozonation (∼40–85 % abatement), but could be enhanced by ∼10–40 % during the three ozone-based AOPs. Besides enhancing ozone-refractory EC abatement, the three AOPs, especially the O 3 /H 2 O 2 and EP processes, reduced considerably bromate formation compared to conventional ozonation. These results demonstrate that the EP process performs similarly as catalytic ozonation and O 3 /H 2 O 2 processes in terms of EC abatement and bromate control. Considering its more convenient, flexible, and safer way of operation, the EP process may provide an attractive alternative to the two more traditional AOPs for water treatment.
研究领域:
环境科学
·
水处理工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCRIPTA MATERIALIA
·
2022
·
IF 6.302
Rui Huang,Hongye Wang,Cheng Tao,Hua Hao,Zhonghua Yao,Hanxing Liu,Minghe Cao
The development of advanced pulse power technology proposes higher demand for dielectric energy storage materials . However, simultaneously obtaining high polarization and breakdown strength has become an obstacle to the development of dielectric materials. Herein, through the elaborate design of multivariant ions Me, BiMeO 3 system thin film Bi(Ni 0.5 Zr 0.5 )O 3 integrating high polarization, large breakdown strength and a localized heterostructure , generating an excellent energy storage density of 77.42 J cm −3 and efficiency of 70.29% at 5.60 MV cm −1 . The enhancive breakdown strength of Bi(Ni 0.5 Zr 0.5 )O 3 thin film is mainly attributed to the amorphous phase induced by low preparation temperature and the oxygen vacancy bound by the valence change of Ni 2+ ion, which reduces leakage current density. This design approach is expected to be widespread for the development of BiMeO 3 system thin film.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2023
·
IF 20.4
Bo Peng,Yanxu Chen,Liping Zhao,Suyuan Zeng,Guanglin Wan,Feng Wang,Xiaolei Zhang,Wentao Wang,Genqiang Zhang
The O3-type layered oxides featuring sufficient Na reservoir have been extensively investigated as promising cathode candidates for sodium-ion batteries. However, the complicated phase transitions derived fast capacity decay has severely impeded its practical applications. Herein, we present a scalable yet feasible strategy to tune the local chemical environment in O3-NaNi 0.5 Mn 0.5 O 2 via Al 3+ doping for dramatically enhancing its electrochemical properties. Specifically, the modulated O3-NaNi 0.45 Al 0.1 Mn 0.45 O 2 cathode raises the capacity retention rate from 40.9% to 86.2% within 200 cycles at a current density of 85 mA g −1 . Combining theoretical calculation and experimental characterizations, it is confirmed that the Al 3+ doping induced reinforcement of transition metal-oxygen bonds and enlargement of Na layer distance can simultaneously inhibit the complicated phase transitions and decrease the Na + diffusion energy barrier, which are responsible for the impressive performance improvement. Importantly, the full-cell device based on this unique cathode and commercial hard carbon anode can deliver a high energy density of 213.5 Wh kg −1 , suggesting its great potential of practicability. This work provides a new insight in finely designing high performance layered oxide cathode for sodium ion batteries, which advances the next generation of cost-effective yet grid-level energy storage systems.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2023
·Vol. 16
·期 23
·7470
·
IF 3.4
Yanling Yuan,Ling Gao,Naixin Li,Jiuning Gao,Yu Yan,Yiming Zhao,Zongqiang Ren,Hongxin Gong,Yunfei Zhang,Yongbin Liu,Ming Wu,Lisheng Zhong
Piezoelectric thin films grown on a mechanical, flexible mica substrate have gained significant attention for their ability to convert mechanical deformation into electrical energy though a curved surface. To extract the generated charge from the PZT thin films, bottom electrodes are typically grown on mica substrates. However, this bottom electrode also serves as a buffering layer for the growth of PZT films, and its impact on the piezoelectric properties of PZT thin films remains understudied. In this work, the effect of Pt and LaNiO3bottom electrodes on the piezoelectric effect of a Pb(Zr0.52,Ti0.48)O3thin film was investigated. It was observed that the PZT thin films on LNO/Mica substrate possessed weaker stress, stronger (100) preferred orientation, and higher remanent polarization, which is beneficial for a higher piezoelectric response theoretically. However, due to insufficient grain growth resulting in more inactive grain boundaries and lattice imperfections, the piezoelectric coefficient of the PZT thin film on LNO/Mica was smaller than that of the PZT thin film on a Pt/Mica substrate. Therefore, it is concluded that, under the current experimental conditions, PZT films grown with Pt as the bottom electrode are better suited for applications in flexible piezoelectric sensor devices. However, when using LNO as the bottom electrode, it is possible to optimize the grain size of PZT films by adjusting the sample preparation process to achieve piezoelectric performance exceeding that of the PZT/Pt/Mica samples.Keywords:PZT;piezoelectric effect;flexible sensor;ferroelectric thin film
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Lei Xu,Shian Song,Nigel J.D. Graham,Wenzheng Yu
Till now, the transformation of amorphous flocs formed during the hydrolysis stage of coagulation has not been fully addressed. In this work, by using a conventional coagulant (alum), the transformation process was explored by observing the interactions between O 3 and the amorphous alum flocs formed during flocculation at neutral pH. It was found that O 3 promoted the transition of the in-situ formed alum flocs from tetrahedral Al (Al(O) 4 ) to octahedral Al (Al(O) 6 ) structures, through an accelerated dehydroxylation process, and therefore facilitated the crystallization process to form boehmite . During this process, the surface functional groups of amorphous Al flocs ( Al–H 2 O and Al–OH) were observed to take part in the O 3 catalytic oxidation with the generation of hydroxyl radicals ( OH). This synergistic effect significantly favored the performance of the subsequent dual-membrane (UF-NF) process in terms of both fouling alleviation (1.78 and 1.60 times higher flux of UF and NF , respectively) and final effluent quality improvement, including the reduction in disinfection byproduct (DBP) formation potential (48.1% and 22.4% lower generation of total trihalomethanes and total haloacetic acid, respectively) and the corresponding calculated toxicity. The results obtained here provide a greater understanding of the transformation of amorphous Al flocs formed during flocculation with O 3 , and valuable information regarding its practical application in membrane filtration process with greater treatment performance.
研究领域:
环境工程
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水处理
·
膜技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Guoliang Liu,Weile Xu,Jianghua Wu,Yong Li,Liping Chen,Shuyue Li,Qinghui Ren,Juan Wang
O3-NaNi 1/3 Fe 1/3 Mn 1/3 O 2 is a promising layered cathode material with high specific capacity, low cost, and simple synthesis. However, sluggish kinetic hindrance is attributed to the size discrepancy between the large Na-ion and narrow tetrahedral interstitial positions, leading to inferior rate capacity and low reversible capacity. Herein, F − with light‐weight and strong electronegativity is introduced to substitute O atoms in the bulk structure, which intensifies the bond strength of transition metal and oxygen and enlarges the Na + diffusion channel. In addition, density-functional theory (DFT) calculations demonstrate that the electrostatic interaction is weakened between Na + in the tetrahedral site and the transition-metal cation directly below it, dramatically reducing the migration barriers of Na + diffusion. Consequently, the as-obtained NaNi 1/3 Fe 1/3 Mn 1/3 O 1.95 F 0.05 sample displays outstanding rate performance of 86.7 mA h g −1 at 10 C and excellent capacity retention of 84.1% after 100 cycles at 2 C. Moreover, a full cell configuration using a hard carbon anode reaches the energy density of 307.7 Wh kg −1 . This strategy paves the way for novel means of modulating the Na-ion migration path for high-rate O3-type layered cathode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Junyan Lin,Lele Chen,Chubin Li,Zuyun Chen,Jiapei Yang,Yuqi Zeng,Yuanxin Jiang,Yu Zhang,Weiwei Xing,Jiye Zhang,Jian-Guo Chen,Kai Guo
Grain boundaries or phase boundaries, which play a pivotal role in decoupling electrical and thermal transport, are frequently engineered to regulate thermoelectric performance. Although extensive research has been conducted on their composition, density, coherency, and width, relatively limited attention has been paid to the strategic utilization of local electric fields at these interfaces for manipulating charge carrier and phonon transport. By incorporating piezoelectric material Pb(Zr 0.50 Ti 0.44 Fe 0.06 )O 3 into thermoelectric material Ge 0.94 Sb 0.06 Te, a local electric field is generated that effectively impedes the transport of low-energy holes. This innovative approach results in a noteworthy enhancement of the Seebeck coefficients in the composites without compromising electrical conductivity. Consequently, an improvement in zT values can be achieved for the sample Ge 0.94 Sb 0.06 Te+ 0.3 wt% Pb(Zr 0.50 Ti 0.44 Fe 0.06 )O 3 , showing a 15 % increase compared to the sample without Pb(Zr 0.50 Ti 0.44 Fe 0.06 )O 3 . Simulation results further corroborate the practical significance of this approach, predicting an impressive conversion efficiency of 10.7 % for a single-leg thermoelectric device, thereby underscoring its considerable potential for power generation applications.
研究领域:
材料科学
·
热电材料
·
固体物理
·
纳米技术
·
能量转换
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Ziming Wang,Hao Chen,Qi Zhao,Yu Shi,Haiyang Wang,Yuxuan Ye,Yu Guo,Zhiguo Du,Shubin Yang
Although O3-type layered oxides have become viable cathode materials for sodium-ion batteries (SIBs) due to their high energy densities , they still suffer from narrow ion channels and serious structure degradation, severely jeopardizing their electrochemical properties . Here, a stable O3-type layered oxide NaNi 0.4 Mn 0.4 M 0.2 O 2 (M= Fe, Cu, Mg, Ti, Sn) (HE-NaNM) was synthesized by a high-entropy doping strategy. Owing to the introduction of the metal cations with ionic radiuses in a range of 0.61-0.73 Å into the layered structure, the lattice is expanded from 15.94 to 16.03 Å in c -axis, associated with a high distortion of TMO 6 octahedrons, offering broad channels for sodium-ion transport in the lattices. Moreover, such expanded lattices and highly distorted TMO 6 octahedrons enable to efficiently restrain the migration of TM ions and the severe sliding of TMO 2 slabs, affording one-step reversible structure evolution between O3 and P3 phase during sodium extraction/insertion without formation of harmful interphases. As a result, a good rate capability of 77.9 mAh g -1 at 10 C and a long-term cycling stability up to 400 cycles at 5 C are achieved for sodium storage.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2023
·
IF 5.4
Dongxiu Lu,Ruhui Ma,Yuan Chen,Yuancai Chen
In this study, Ni-doped Ti/SnO 2 -Sb anode (Ti/NATO) was prepared and used for electrocatalytic ozone production and in-situ activated peroxymonosulfate (E-Ti/NATO-PMS) to degrade bisphenol A (BPA). SEM, XRD and XPS results indicated that Ni doping could influence the transformations of Sb 5+ and Sb 3+ ions, which decreased the agglomeration of crystallites and increased the O ads and oxygen vacancy (O v ) concentrations. Ti/NATO 1.0 anodes significantly improved the ozone production via outcompeting of the adsorbed O 2ads over water, and inhibiting the desorption of O 2ads , to obtain the highest O 3 concentration with low onset potential and high oxygen evolution potential. E-Ti/NATO 1.0 -PMS system obtained over 92% BPA degradation within 60 min at 10 mA cm −2 and pH ranging from 4 to 10. Radical scavenging experiments revealed that O 3 in situ generated could directly electro-activate PMS into •O 2 − and 1 O 2 . The E-Ti/NATO 1.0 -PMS process could detoxify the BPA through chain scission, rearrangement and ring opening processes, and exhibited great potentials for application.
研究领域:
环境科学
·
化学工程
·
水处理
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）