Journal of Materiomics最新文献_第5页

Low-loss (Sr,Ce)TiO3Sr2CeO4B2O3 ceramics composite featuring balanced microwave dielectric properties for miniaturized wireless communication applications 具有平衡微波介电性能的低损耗（Sr,Ce） TiO3-Sr2CeO4-B2O3陶瓷复合材料，用于小型化无线通信应用

IF 9.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-12-27 DOI: 10.1016/j.jmat.2025.101157

Tauqeer Ahmad , Wen Lei , Burhan Ullah , Wen-zhong Lu

A series of (Sr_0.4Ce_0.4)TiO₃ + 4% (in mass) Sr₂CeO₄ + x% B₂O₃ (SCTO + 4% SCO + x% B₂O₃ for 1≤ x ≤ 5) composites were synthesized via solid-state reaction to investigate the effects of Sr₂CeO₄ and B₂O₃ additives on their structural evolution and microwave dielectric properties. X-ray diffraction (XRD) and Rietveld refinement confirmed the dominant orthorhombic phase (O-phase), with SCO as a secondary phase, indicating a chemically stable composite system. HRTEM and SAED analyses further confirmed the formation of the O-phase through direct observation of the superlattice reflections. Microstructural evolution demonstrated B₂O₃-assisted liquid-phase sintering, reducing porosity (0.017 → 0.006) and increasing grain size (3.34 → 6.01 μm) with increasing x% (in mass). Raman spectroscopy verified octahedral tilting and CeO stretching, while B₂O₃ incorporation modified the TiO₆ network via BO₃/BO₄ interactions. The ε_r decreased from 113 (SCTO) to 27 at x = 5%, while τ_f improved from +213 to +12 × 10⁻⁶/°C. The reduction in ε_r arises from a complex interplay of internal factors (ionic polarizability) and external factors (porosity, and density), whereas the variation in τ_f is governed by compensating effects from Sr₂CeO₄ and B₂O₃. Optimal microwave performance was achieved at x = 5%, with Q×f = 43,603 GHz, ε_r = 27, and τ_f of +12 × 10⁻⁶/°C. The study demonstrates that SCO and B₂O₃ act as effective modifiers, enhancing densification and dielectric properties in SCTO-based microwave ceramics.

通过固相反应合成了一系列（Sr0.4Ce0.4）TiO3 + 4%（质量）Sr2CeO4 + x% B2O3 （SCTO + 4% SCO + x% B2O3(1≤x≤5)）复合材料，研究了Sr2CeO4和B2O3添加剂对复合材料结构演变和微波介电性能的影响。x射线衍射（XRD）和Rietveld细化证实了该复合体系的主要正交相（o相），SCO为次级相，表明该复合体系化学稳定。HRTEM和SAED分析通过直接观察超晶格反射进一步证实了o相的形成。微观组织演化表现为b2o3辅助液相烧结，孔隙率随质量增加x%而减小（0.017→0.006），晶粒尺寸随质量增加而增大（3.34→6.01 μm）。拉曼光谱证实了八面体倾斜和CeO拉伸，而B2O3的加入通过BO3/BO4相互作用修饰了TiO6网络。当x = 5%时，εr从113 （SCTO）下降到27，τf从+213提高到+12 × 10−6/°C。εr的减小是由内部因素（离子极化率）和外部因素（孔隙率和密度）的复杂相互作用引起的，而τf的变化是由Sr2CeO4和B2O3的补偿效应控制的。当x = 5%, Q×f = 43,603 GHz, εr = 27, τf = +12 × 10−6/°C时，微波性能最佳。研究表明，SCO和B2O3作为有效的改性剂，提高了scto基微波陶瓷的致密性和介电性能。

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引用次数: 0

3D porous carbon gel composite with transition metal particles for anchoring-diffusion-conversion of polysulfides for lithium–sulfur batteries 三维多孔碳凝胶复合材料与过渡金属颗粒锚定-扩散转化锂硫电池用多硫化物

IF 9.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-12-26 DOI: 10.1016/j.jmat.2025.101156

Ying Wang , Bo Yang , Hanqing Yu , Dingxin Shuai , Xiuqiong Hu , Ying Zhang , Jiyue Hou , Yiyong Zhang

Lithium-sulfur batteries (LSBs) exhibit high energy density and high theoretical specific capacity, approximately one order of magnitude higher than traditional lithium-ion batteries. However, the shuttling effect of lithium polysulfides (LiPSs) generated during the charge-discharge process severely compromises battery performance and hinders commercialization. In this paper, a 3D porous carbon gel sulfur host, M@rGO–PCG (M = Ni, Co), composed of transition metal particles and redox graphene, was fabricated through gelation and freeze-drying techniques. This material enhances the conductivity of the cathode, buffers the volume expansion of the electrode, and further accelerates the catalytic conversion of LiPSs. The assembled Ni@rGO–PCG/S and Co@rGO–PCG/S batteries deliver initial discharge specific capacities of 1390.0 mA⋅h⋅g⁻¹ and 1603.6 mA⋅h⋅g⁻¹ at a current rate of 0.1C, respectively. The findings provide valuable insights into the synergistic suppression of the shuttling effect through multiple functions.

锂硫电池（LSBs）具有高能量密度和高理论比容量，比传统锂离子电池高出约一个数量级。然而，在充放电过程中产生的多硫化锂（LiPSs）的穿梭效应严重影响了电池的性能，阻碍了商业化。以过渡金属颗粒和氧化还原石墨烯为原料，通过凝胶化和冷冻干燥法制备了三维多孔碳凝胶硫载体M@rGO -PCG （M=Ni, Co）。该材料增强了阴极的导电性，缓冲了电极的体积膨胀，进一步加速了LiPSs的催化转化。组装的Ni@rGO -PCG /S和Co@rGO -PCG /S电池在0.1 C电流下的初始放电比容量分别为1390.0 mA·h·g−1和1603.6 mA·h·g−1。这些发现为通过多种功能协同抑制穿梭效应提供了有价值的见解。

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引用次数: 0

Mesh-channel-integrated transparent devices with hybrid conductive networks for enhanced electromechanical sensing 用于增强机电传感的带有混合导电网络的网状通道集成透明器件

IF 9.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-12-22 DOI: 10.1016/j.jmat.2025.101155

Thi Sinh Vo , Truong Sinh Nguyen , Seung-Hyun Lee , Kyunghoon Kim

Flexible and transparent strain sensors with high sensitivity were fabricated by embedding hybrid networks of carbon nanotubes (CNTs) and carbon (C) nanoparticles into micro-mesh polydimethylsiloxane (PDMS) substrates. The resulting devices exhibited optical transmittance above 70% and haze below 7%, ensuring unobtrusive integration on skin. Systematic variation of CNT:C ratios (0:1, 1:1, 2:1, 3:1) revealed that the 2:1 hybrid achieved optimal performance, combining uniform dispersion, strong interfacial adhesion, and robust conductive pathways. The optimized device (S2-PDMS) demonstrated a maximum gauge factor of 465.35 at 32.5% strain, and reliable cycling stability for repeatability of stretching, bending, and twisting deformations. Mechanical tests confirmed high tensile strength (2.63 MPa) and durability under repeated deformation, outperforming polyethylene terephthalate (PET)-based counterparts. The sensor also exhibited response times in the range of ∼158–557 ms and recovery times between ∼110 ms and 697 ms, depending on the type and complexity of the human motion. As such, the sensors successfully monitored diverse human motions, subtle muscle activity, and vocal vibrations, and enabled wireless data transmission via Bluetooth, underscoring their potential for real-time health monitoring, human–machine interfaces, and Internet of Things-enabled wearable electronics.

将碳纳米管（CNTs）和碳纳米粒(C)混合网络嵌入微孔聚二甲基硅氧烷（PDMS）衬底中，制备了具有高灵敏度的柔性透明应变传感器。所得器件的透光率高于70%，雾度低于7%，确保在皮肤上不显眼地集成。碳纳米管：碳纳米管比例（0:1,1:1,2:1,3:1）的系统变化表明，2:1混合材料具有最佳性能，具有均匀分散，强界面粘附和稳健的导电途径。优化后的器件（S2-PDMS）在32.5%应变下的最大测量因子为465.35，并且在拉伸、弯曲和扭转变形的重复性方面具有可靠的循环稳定性。机械测试证实了高拉伸强度（2.63 MPa）和反复变形耐久性，优于基于聚对苯二甲酸乙二醇酯（PET）的同类材料。根据人体运动的类型和复杂程度，传感器的响应时间在~ 158-557 ms之间，恢复时间在~ 110-697 ms之间。因此，这些传感器成功地监测了各种人体运动、细微的肌肉活动和声音振动，并通过蓝牙实现了无线数据传输，突显了它们在实时健康监测、人机界面和支持物联网的可穿戴电子产品方面的潜力。

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引用次数: 0

Remarkable flexibility and curvature-tunable thermoelectric properties in transparent freestanding single-crystalline CdO membranes 透明独立单晶CdO膜的显著柔韧性和曲率可调热电特性

IF 9.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-12-17 DOI: 10.1016/j.jmat.2025.101153

Xingkun Ning, Yongmao Ran, Jiaying Han, Linjie Gao, Shufang Wang

Transparent thermoelectric CdO thin films exhibit critical flexibility and thermoelectric performance that require focused research to advance flexible transparent self-powered devices. Here, we demonstrate the superior flexibility of freestanding single-crystalline CdO membranes. These membranes achieve a notable room-temperature power factor of 1.48 μW·cm⁻¹·K⁻² and exhibit superior optical transmittance exceeding 94% in the 550–800 nm range. Crucially, freestanding CdO exhibits exceptional mechanical robustness, retaining >90% electrical conductivity after 1000 bending cycles (radius: 11.5 mm). Microstructure analyses confirm polycrystalline CdO films suffer from grain boundary cracking under bending due to stress concentration, but single-crystal CdO membranes—without grain boundaries to concentrate stress—exhibit better flexibility and resistance to cracking. Furthermore, curvature-induced strain boosts the power factor by 12.8%, providing a curvature-controlled strain engineering strategy to optimize flexible thermoelectric performance. This work establishes freestanding CdO as a highly efficient and flexible thermoelectric material and suggests a fundamental strategy for designing robust smart materials for transparent, self-powered flexible electronics.

透明热电CdO薄膜具有关键的灵活性和热电性能，需要重点研究以推进柔性透明自供电器件。在这里，我们证明了独立的单晶CdO膜的优越的灵活性。该膜室温功率因数为1.48 μW·cm−1·K−2，在550 ~ 800 nm范围内的透光率超过94%。至关重要的是，独立式CdO具有出色的机械坚固性，在1000次弯曲循环（半径：11.5 mm）后仍保持90%的导电性。微观结构分析证实，多晶CdO膜在弯曲作用下由于应力集中导致晶界开裂，而单晶CdO膜没有晶界集中应力，具有更好的柔韧性和抗裂性。此外，曲率诱导应变可使功率因数提高12.8%，为优化柔性热电性能提供了曲率控制应变工程策略。这项工作建立了独立的CdO作为一种高效和灵活的热电材料，并提出了一种为透明、自供电的柔性电子产品设计坚固的智能材料的基本策略。

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引用次数: 0

Semi-alicyclic fluorinated polyimide with ultrahigh energy density enabled by bandgap-topology co-engineering 带隙拓扑协同工程实现了超高能量密度的半脂环氟化聚酰亚胺

IF 9.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-12-15 DOI: 10.1016/j.jmat.2025.101151

Shuoyan Liu , Jiufeng Dong , Liang Sun , Zizhao Pan , Yujuan Niu , Yani Lu , Yuqi Liu , Hong Wang

Aromatic polyimide (PI) with high glass transition temperature (T_g) shows promise as a polymer dielectric for energy storage, but its rigid aromatic structure and electron delocalization cause significant conduction loss, degrading energy storage performance and breakdown strength (E_b) under high temperatures. Herein, we introduce a novel semi-alicyclic fluorinated polyimide (H-FPI) designed via a molecular engineering strategy that synergistically integrates bandgap and topological conformation modulation. Specifically, the alicyclic group elevates the lowest unoccupied molecular orbital (LUMO) while strong electron-withdrawing trifluoromethyl (CF₃) substitution depresses the highest occupied molecular orbital (HOMO), creating a wide bandgap (4.2 eV). Concurrently, the chair-conformation alicyclic backbone and sterically bulky CF₃ groups synergistically disrupt molecular planarity, reducing π-orbital overlap to suppress charge transfer while restricting chain mobility to yield a high T_g of 272 °C. Remarkably, H-FPI film delivers a high energy density of 6.02 J/cm³ with a superior breakdown strength of 626 MV/m at 200 °C, surpassing commercial PI and fluorinated polyimide (FPI) by 1261% and 55%, respectively. Furthermore, H-FPI film exhibits exceptional capacitor charge-discharge cyclability, enhanced mechanical robustness, and excellent thermal stability. This work establishes a new molecular design paradigm for organic capacitors in electrified transportation and smart grid systems requiring high-temperature working reliability.

具有高玻璃化转变温度（Tg）的芳香族聚酰亚胺（PI）是一种很有前途的聚合物电介质，但其刚性的芳香族结构和电子离域导致了严重的传导损失，降低了高温下的储能性能和击穿强度（Eb）。在此，我们介绍了一种新型的半脂环氟化聚酰亚胺（H-FPI），通过分子工程策略设计，协同集成带隙和拓扑构象调制。具体来说，脂环基团提高了最低的未占据分子轨道（LUMO），而强吸电子的三氟甲基（-CF3）取代降低了最高的已占据分子轨道（HOMO），产生了宽的带隙（4.2 eV）。同时，椅子构象的脂环主链和空间体积庞大的-CF3基团协同破坏分子的平面性，减少π-轨道重叠抑制电荷转移，同时限制链迁移率，从而产生272℃的高Tg。值得注意的是，H-FPI薄膜在200°C下具有6.02 J/cm3的高能量密度和626 MV/m的优异击穿强度，分别比商用PI和氟化聚酰亚胺（FPI）高出1261%和55%。此外，H-FPI薄膜具有优异的电容器充放电循环性能，增强的机械稳健性和优异的热稳定性。这项工作为电气化运输和智能电网系统中需要高温工作可靠性的有机电容器建立了一种新的分子设计范式。

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引用次数: 0

Boosting energy storage in lead-free NaNbO3-based antiferroelectric ceramics through lamellar nanodomain engineering 利用层状纳米畴工程提高无铅纳米bo3基反铁电陶瓷的储能性能

IF 9.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-12-15 DOI: 10.1016/j.jmat.2025.101154

Xuewen Jiang , Wei Wang , Aiwen Xie , Ziyi Tang , Ao Tian , Xin Gao , Xiaokuo Er , Liqiang Liu , Ruzhong Zuo

The development of high-performance lead-free energy storage capacitors is crucial for sustainable technologies, yet hindered in NaNbO₃-based antiferroelectric (AFE) ceramics because of significant polarization hysteresis from field-induced AFE-ferroelectric (FE) phase transitions. This hysteresis fundamentally limits the simultaneous optimization of recoverable energy density (W_rec) and efficiency (η). Herein, we demonstrate that lamellar nanodomain engineering via compositional design in a (0.87–x)NaNbO₃–0.13Bi_0.5Na_0.5TiO₃–xBi(Mg_0.5Ti_0.5)O₃ system effectively overcomes this bottleneck. The optimized composition (x = 0.05) delivers exceptional energy storage performance with a W_rec of ∼8.2 J/cm³, a η of ∼88.9%, and a power density of ∼207 MW/cm³. Analysis on multiscale structure evolution reveals that this compositional tuning induces a phase transformation from AFE P to AFE R symmetry, accompanied by an enhanced local structural disorder. Critically, the formation of lamellar AFE R-phase nanodomains with width ranging from 2 nm to 6 nm drives a quasi-linear polarization response with minimal hysteresis. Concurrently, the refined grain size improves the ceramic resistivity, substantially enhancing dielectric breakdown strength. These synergistic effects collectively yield outstanding energy storage properties, demonstrating that engineering lamellar AFE R-phase nanodomains is an efficient strategy to optimize overall energy storage performance of NaNbO₃-based materials.

高性能无铅储能电容器的发展对可持续发展技术至关重要，但由于场致反铁电（FE）相变产生的显著极化滞后，阻碍了基于nanbo3的反铁电（AFE）陶瓷的发展。这种滞后从根本上限制了可回收能量密度（Wrec）和效率（η）的同时优化。在此，我们证明了通过组成设计在（0.87-x） NaNbO3-0.13Bi0.5Na0.5TiO3-xBi (Mg0.5Ti0.5)O3体系中的层状纳米畴工程有效地克服了这一瓶颈。优化后的组合物（x = 0.05）具有优异的储能性能，Wrec为~ 8.2 J/cm3， η为~ 88.9%，功率密度为~ 207 MW/cm3。多尺度结构演化分析表明，这种成分调谐引起了从AFE P对称性到AFE R对称性的相变，并伴随着局部结构无序性的增强。关键的是，在2-6 nm宽度范围内的层状AFE r相纳米畴的形成驱动了具有最小滞后的准线性极化响应。同时，细化的晶粒尺寸提高了陶瓷的电阻率，大大提高了介质击穿强度。这些协同效应共同产生了出色的储能性能，表明工程层状AFE r相纳米畴是优化nanbo3基材料整体储能性能的有效策略。

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引用次数: 0

Carbon nanotube networks as efficient transparent electrode for polymer/silicon hybrid solar cells 碳纳米管网络作为聚合物/硅混合太阳能电池的高效透明电极

IF 9.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-12-15 DOI: 10.1016/j.jmat.2025.101152

Zexia Zhang , Yi Jia , Qian Lv , Ruitao Lv , Feiyu Kang

Polymer/Si hybrid solar cells have attracted much research interest in virtue of their simple device structure and combination of flexibility and stability. Metal grid by thermal evaporation is usually used as the top electrode, which gives rise to a tradeoff between the efficient coverage and the decreased light absorption, in addition to the costly metal deposition in high vacuum. Carbon nanotube (CNT) networks possess both good conductivity and high light transmittance, thus is a promising candidate for the top electrode. Although it is significant to prepare and apply large-area and high-quality CNT films with high transparency and low sheet resistances into kinds of solar cells, CNTs have not been studied as transparent electrodes in polymer/Si hybrid solar cells to the best of our knowledge. In this work, large-area and continuous CNT networks with 86% transmittance at 550 nm are synthesized and used as transparent window electrodes in the hybrid heterojunction solar cells composed of a conjugate polymer poly(3,4-ethylenedioxy-thiophene):poly(styrenesulfonate) (PEDOT:PSS) and micro-textured n-type crystalline silicon wafers. Directly laminating the pristine CNT film onto the PEDOT:PSS/Si surface can lead to a power conversion efficiency (PCE) of 3.9%. After purification of CNT networks, the performance is improved up to 7.0%, due to the efficient carrier transportation and light harvesting of CNT electrodes. The results indicate that the flexible and transparent CNT networks have great potential for realizing metal grid-free hybrid polymer/Si solar cells.

聚合物/硅杂化太阳能电池以其器件结构简单、兼具柔韧性和稳定性等优点而备受关注。通常采用热蒸发金属栅极作为顶电极，这不仅需要在高真空条件下进行昂贵的金属沉积，而且还需要在有效的覆盖和光吸收之间进行权衡。碳纳米管（CNT）网络具有良好的导电性和高透光性，是一种很有前途的顶端电极。尽管制备高透明度、低片电阻的大面积高质量碳纳米管薄膜并将其应用于各种太阳能电池具有重要意义，但据我们所知，碳纳米管作为透明电极应用于聚合物/硅杂化太阳能电池的研究尚不多见。在这项工作中，在550 nm处合成了具有86%透射率的大面积连续碳纳米管网络，并将其用作由共轭聚合物聚（3,4-乙烯二氧基噻吩）、聚（苯乙烯磺酸盐）（PEDOT:PSS）和微纹理n型晶体硅片组成的杂化异质结太阳能电池的透明窗口电极。将原始碳纳米管薄膜直接层压在PEDOT:PSS/Si表面上可以使功率转换效率（PCE）达到3.9%。经过碳纳米管网络净化后，由于碳纳米管电极的高效载流子传输和光收集，性能提高了7.0%。结果表明，柔性透明碳纳米管网络在实现金属无栅聚合物/硅杂化太阳能电池方面具有很大的潜力。

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引用次数: 0

Temperature-dependent field-induced phase transition behavior in Pb(Yb1/2Nb1/2)O3-based antiferroelectrics Pb(Yb1/2Nb1/2) o3基反铁电体的温度场诱导相变行为

IF 9.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-12-10 DOI: 10.1016/j.jmat.2025.101150

Qing Li , Wei Deng , Tian-Ci Ma , Changhao Zhao , Mupeng Zheng , Lei Zhao , Qiong Wu , Chaofeng Wu , Fang-Zhou Yao , Wen Gong , Dragan Damjanovic , Mao-Hua Zhang

Complex lead-based perovskites with the general formula Pb(B_x'B_1-x")O₃, represent an important class of antiferroelectrics beyond the prototypical PbZrO₃ and NaNbO₃. Depending on the combination of B-site species and the degree of cationic ordering, these materials exhibit a wide range of ferroic behaviors, spanning from antiferroelectric to (relaxor) ferroelectric responses. In this study, we investigate (Pb_1-xBa_x)(Yb_1/2Nb_1/2)O₃ polycrystals synthesized via a two-step processing route. Despite displaying antiferroelectric, ferroelectric, or nearly linear dielectric behavior at room temperature, all compositions exhibit double polarization hysteresis loops in proximity to a lower-temperature dielectric anomaly. This dielectric anomaly originates from the competition between antipolar and nanoscale polar regions, and shifts towards lower temperature with increasing Ba content, reflecting the suppression of long-range antiferroelectric ordering. Notably, a composition-invariant temperature scale, T∗, is identified and associated with the onset of static correlations among nanoscale polar entities, consistent with behavior reported in other complex Pb-based relaxor ferroelectrics. Superlattice reflections arising from antiparallel Pb²⁺ displacements persist above T∗, suggesting an intricate cation-ordering landscape requiring further investigation. These findings underscore the coexistence and competition of polar and antipolar instabilities in complex lead-based perovskites, and their pronounced sensitivity to chemical substitution, thermal fluctuations, and external electric fields.

复杂的铅基钙钛矿具有通式Pb(Bx 'B1-x ')O3，代表了一种重要的反铁电体，超越了典型的PbZrO3和NaNbO3。根据b位的组合和阳离子有序的程度，这些材料表现出广泛的铁性行为，从反铁电到（弛豫）铁电响应。本研究采用两步法合成了（Pb1-xBax）（Yb1/2Nb1/2）O3多晶。尽管在室温下表现出反铁电、铁电或接近线性的介电行为，但所有成分在接近低温介电异常时都表现出双极化迟滞回线。这种介电异常源于反极性区和纳米级极性区之间的竞争，并随着Ba含量的增加向低温转移，反映了远程反铁电有序的抑制。值得注意的是，研究人员发现了一个组成不变的温度尺度T*，并将其与纳米级极性实体之间的静态相关性联系起来，这与其他复杂的铅基弛豫铁电体的行为一致。由反平行Pb2+位移引起的超晶格反射在T*以上持续存在，表明需要进一步研究复杂的阳离子有序景观。这些发现强调了复杂铅基钙钛矿中极性和反极性不稳定性的共存和竞争，以及它们对化学取代、热波动和外电场的显著敏感性。

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引用次数: 0

Enhancing piezoelectric sensing properties of DLP-printed PZT ceramics through controlled powder light absorption 通过控制粉末光吸收提高dlp印刷PZT陶瓷的压电传感性能

IF 9.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-12-03 DOI: 10.1016/j.jmat.2025.101149

Ruihang Liu , Yaoting Zhao , Wei Gao , Jin Zhang , Lanci Guo , Xiujuan Lin , Shifeng Huang , Hang Luo , Dou Zhang

Digital light processing (DLP) printing of PbZrTiO₃ (PZT) ceramics is significantly hampered by the inherent high light absorption of the powder, leading to detrimental defects such as shrinkage and cracking, which severely compromise the final sensor performance. Herein, we propose a strategy to modulate the light absorption of PZT powder by mixing compositions calcined at different temperatures. By optimizing the mass ratio of P860 to P1150 to 1:9, we achieved a suspension with enhanced curing depth and rheological properties, enabling the fabrication of high-density ceramics with a piezoelectric constant of 470 pC/N. Furthermore, a sophisticated sandwiched piezoelectric sensor, architected with crossed square columns, demonstrated exceptional electromechanical performance, generating an open-circuit voltage of 278 V and a short-circuit current of 2.19 μA. This design conferred a piezoelectric sensitivity approximately 7 times greater than bulk counterparts. Remarkably, despite its compact size of merely 1.3 cm × 1.3 cm, this sensor still achieves a transmission power of 5.2 mW during underwater remote energy transfer over a distance of 400 mm. This work establishes a viable pathway for fabricating next-generation high-performance PZT piezoelectric sensors via advanced DLP processing.

PbZrTiO3 （PZT）陶瓷的数字光处理（DLP）印刷受到粉末固有的高光吸收的严重阻碍，导致收缩和开裂等有害缺陷，严重影响最终传感器的性能。在此，我们提出了一种通过混合不同温度煅烧的成分来调节PZT粉末的光吸收的策略。通过将P860与P1150的质量比优化至1:9，我们获得了具有增强固化深度和流变特性的悬浮液，从而实现了压电常数为470 pC/N的高密度陶瓷的制造。此外，交叉方形柱结构的夹层压电传感器具有优异的机电性能，可产生278 V的开路电压和2.19 μA的短路电流。这种设计赋予了压电灵敏度大约7倍于散装同类产品。值得注意的是，尽管其紧凑的尺寸仅为1.3厘米× 1.3厘米，该传感器在水下400毫米距离的远程能量传输中仍然达到5.2兆瓦的传输功率。本研究为通过先进的DLP工艺制造下一代高性能PZT压电传感器建立了一条可行的途径。

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引用次数: 0

Development of high-performance asymmetric supercapacitors based on MXene and Mn-doped Zn ferrite composites for energy storage applications 基于MXene和mn掺杂Zn铁氧体复合材料的高性能非对称储能超级电容器的研制

IF 9.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics

Pub Date : 2025-11-26 DOI: 10.1016/j.jmat.2025.101147

Irfan Sabir , He Mingxia , Hafeez Anwar , Muhammad I. Masud , Mohammed Aman , Muhammad Kashif

In this work, Mn_xZn_1-xFe₂O₄ (MZF) ferrite and MXene (Ti₃C₂T_x) composites were addressed to enhance the electrochemical performance. MXene is a relatively new material belonging to the 2D layered family and is mainly used to enhance the electrochemical features of electrode materials. The incorporation of MZF material acts as a conductive bridge, affecting the structural stability and electrochemical features of Ti₃C₂T_x MXene. MZF nanoparticles were embedded with Ti₃C₂T_x MXene to develop a hybrid MXene@MZF₁ electrode composite. The structural formation of composites was investigated using Raman spectroscopy, XRD, SEM, EDX, TEM, and XPS. The electrochemical examination of the prepared composite revealed a significant increase in specific capacitance. The (MXene)₇₅(Mn_0.05Zn_0.95Fe₂O₄)₂₅ electrode material was exposed to a gravimetric specific capacitance of 646.9 F/g at a scanning rate of 5 mV/s. Moreover, an asymmetric supercapacitor (ASC) device was constructed, achieving a specific energy of approximately 47 W·h·kg⁻¹ and a power density of 4937.1 W/kg, respectively. An excellent capacitance retention of 128.9% and coulombic efficiency of 99% were observed after 6000 GCD duty cycles. This study confirmed the good stability of the MXene@MZF₁ electrode compound after experimental and theoretical investigations. Therefore, MXene-based MZF₁ electrode materials enhanced electrochemical properties and improved cyclic durability for the ASC device.

本文研究了MnxZn1-xFe2O4 （MZF）铁氧体和MXene （Ti3C2Tx）复合材料的电化学性能。MXene是一种相对较新的材料，属于二维层状族，主要用于增强电极材料的电化学特性。MZF材料的掺入起到导电桥的作用，影响了Ti3C2Tx MXene的结构稳定性和电化学特性。将MZF纳米颗粒与Ti3C2Tx MXene包埋，制备了一种杂化MXene@MZF1电极复合材料。采用拉曼光谱、XRD、SEM、EDX、TEM和XPS对复合材料的结构形成进行了研究。对所制备的复合材料进行电化学测试，发现其比电容显著提高。（MXene）75(Mn0.05Zn0.95Fe2O4)25电极材料在5 mV/s扫描速率下的重量比电容为646.9 F/g。此外，构建了非对称超级电容器（ASC）器件，其比能量约为47 W·h·kg−1，功率密度为4937.1 W/kg。在6000 GCD占空比下，电容保持率为128.9%，库仑效率为99%。本研究通过实验和理论研究证实了MXene@MZF1电极化合物具有良好的稳定性。因此，基于mxeni的MZF1电极材料增强了ASC器件的电化学性能，提高了循环耐久性。

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