JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2017
·Vol. 21
·期 6
·1625-1630
·
IF 2.316
Sun Xuemin,Yin Shengyu,Feng Chuanqi
Lead lithium titanium oxide with the composition PbLi 2 Ti 6 O 14 has been successfully synthesized by the rheological phase reaction method and exhibited excellent electrochemical properties as an anode material for lithium ion batteries. The results show that PbLi 2 Ti 6 O 14 with a three-dimensional network could reversibly accommodate about four lithium ions (146.4 mAh g −1 ) per unit formula along with the partial reduction of Ti 4+ to Ti 3+ , and the multiple steps of lithium insertion during the cycling process were explained from crystallographic view point. Moreover, when the load current density was increased from 100 to 200, to 400, and then to 800 mA g −1 , the corresponding charge capacity was 134.8, 119.6, 103.7, and 86.3 mAh g −1 , respectively, and the capacity recovered to 128.7 mAh g −1 if the current density was returned to 100 mA g −1 . Thus, the PbLi 2 Ti 6 O 14 , with certain specific capacity, excellent cycling performance and rate capability, can be used as a promising anode material for lithium ion battery applications.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2021
·Vol. 50
·期 11
·6426-6437
·
IF 1.938
Zhang Chao,Sun Huajun,Zhu Quanyao
In this paper, two methods (magnetic stirring and mechanical ball milling) were used to modify the surface of lead zirconate titanate (PZT) particles. Then, poly(vinylidene fluoride) (PVDF)/PZT piezoelectric films were prepared by extrusion casting and solvent casting. We investigated the mechanical, dielectric, ferroelectric, and piezoelectric properties, as well as the breakdown strength of the PVDF/PZT films. We found that adding PZT particles improved the mechanical stability of the films under variable temperature conditions. Modification by the UP-105 titanate coupling reagent further improved the combination and dispersion of PZT@105 particles in PVDF. The films prepared by extrusion casting showed improved properties in terms of density, dielectric constant, breakdown strength, and piezoelectric coefficient. The piezoelectric coefficient ( d 33 ) of the PVDF/PZT@105 composite film (with 25 wt.% PZT@105) prepared by extrusion casting reached 35 pC/N, and the electromechanical strain ratio was almost 1.6%, which is higher than that of piezoelectric ceramics.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2021
·
IF 5.302
Longlong Jiang,Xiao-Xiong Wang,Jun Zhang,Hao Hong,Kefan Du,Yifei Zhang,Yanqiang Li,Yongcheng Zhang,Yunze Long,Keqing Ruan
It is a challenge to achieve flexibility in purely inorganic piezoelectric materials without organic support, and various thin film flexible inorganic piezoelectric materials has been developed recently. In this work, lead zirconate titanate (PZT) nanofiber membranes were prepared by electrospinning, and a flexible membranes can be obtained by reducing the calcination temperature, and the flexibility was characterized by the three-point method. The fiber membrane was relatively thicker in relative to thin films and confirmed to adsorb Congo Red quickly under the action of ultrasound. The maximum adsorption capacity is 61.78 mg g −1 and saturation time reaches 20 min under ultrasound treatment. In addition, the color change after saturation adsorption can quickly determine the actual load of the fiber membrane. In the future, this load saturation effect can be used to calibrate the relationship between the piezoelectric signal and the adsorption load, so as to obtain more accurate chemical sensors.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Querui Hu,Yiping Wang,Kang Yan,Lang Chen,Guoliang Yuan,Jing Chen,Ying Yang
The structure and electric properties of 5 mol. % LiNbO 3 doped x BiScO 3 –(95- x )PbTiO 3 (5LN– x BS–(95- x )PT, 26 ≤ x ≤ 41 mol. %) ceramics have been systematically investigated. The composition-, temperature- and electric-field-dependent phase transitions were established carefully by the temperature-dependent dielectric measurements. The results verified that the 5LN– x BS–(95- x )PT system transformed to nonergodic relaxors (NR) phase gradually from normal ferroelectrics (FE) phase with the addition of BiScO 3 contents. With the increase of temperature, ergodic relaxors (ER) phase was observed before the phase transition from FE and/or NR to paraelectrics (PE) phase. By comparing the dielectric responses of the ceramics before and after polarization, it was confirmed that the electric field could induce a phase transition from NR to FE while the ceramics were polarized, which was attributed to the growth of the dipole clusters and the permutation of the macroscopical ferroelectric order under the external electric field. The phase diagram of 5LN– x BS–(95- x )PT system was then built and the morphotropic phase boundary (MPB) between tetragonal and rhombohedral phase of the system was identified at 34 ≤ x ≤ 36. The optimal properties were found at the composition of 5LN–34BS–61PT ceramic with piezoelectric coefficient d 33 value of 514 pC/N, planar electromechanical coupling factor k p of 0.47, relative dielectric constant ε r of 2511, and remnant polarization P r of 37.4 μC/cm 2 . The displayed piezoelectric properties could provide alternative compositions with less lead contents comparing with the Pb(Zr, Ti)O 3 based piezoceramics.
研究领域:
材料科学
·
陶瓷材料
·
电介质物理
✓ 已验证
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2022
·
IF 4.778
Xin Long,Pengkai Tang,Wei Chen,Linnan Bi,Xiongbang Wei,Sizhe Wang,Jiaxuan Liao
Lead zirconate titanate (PZT) aerogels are ideal piezoelectric materials for underwater acoustic transducers (UATs) due to their light structure, but their difficult preparation, poor mechanical properties and poor integrated electrical properties greatly limit their practical applications. In order to overcome these difficulties, we innovatively adopted a solvothermally combined sol-gel method to successfully achieve simple, rapid, and low-cost preparation of PZT aerogels, designed a 0–3 type PZT aerogel/PVDF composite coating to overcome the weak mechanical properties of PZT aerogels, and used SiO 2 aerogels and PZT ceramic powders to improve the ferroelectric and piezoelectric properties of the PZT aerogel/PVDF composite coating, respectively. After verifying that the PZT aerogel/PVDF composite coating modified by 4 wt% SiO 2 aerogels and 30 wt% PZT ceramic powders has the best integrated electrical properties, we prepared its 50-layer combination to further improve the comprehensive properties. The 50-layer composite coating has a moderate piezoelectric constant d 33 of 132.7 pC/N and a high piezoelectric constant d 31 of −33.6 pC/N, a low relative permittivity of 593.7 and a low dielectric loss of 0.85% at 40 Hz, a high Young's modulus of 616.2 MPa, and a density of 1.163 g/cm 3 similar to water, indicating that it has surpassed various high-performance Pb-containing piezoelectric ceramics in integrated electrical properties, mechanical properties and acoustic impedance matching with water, which is more in line with the needs of use in UATs. This research offers a new pathway to design a piezoelectric material for UATs with light structure and excellent comprehensive properties.
研究领域:
材料科学
·
声学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2023
·Vol. 16
·期 20
·6781
·
IF 3.4
Guo-Cui Bao,Dong-Liang Shi,Jia-Ming Zhang,Fan Yang,Guang Yang,Kun Li,Bi-Jun Fang,Kwok-Ho Lam
The fabrication method plays a key role in the performance of lead magnesium niobate–lead titanate-based ceramics. (1 −w)[Pb(Mg1/3Nb2/3)0.67Ti0.33O3]-w[Pb1−1.5xSmx(Mg1/3Nb2/3)yTi1−yO3] piezoelectric ceramics were prepared by sintering the mixture of two different crystalline phases in which two pre-sintered precursor powders were mixed and co-fired at designated ratios (w= 0.3, 0.4, 0.5, 0.6). The X-ray diffraction results show that all the ceramics presented a pure perovskite structure. The grains were closely packed and the average size was ~5.18 μm based on observations from scanning electron microscopy images, making the ceramics have a high density that is 97.8% of the theoretical one. The piezoelectric, dielectric, and ferroelectric properties of the ceramics were investigated systematically. It was found that the properties of the ceramics were significantly enhanced when compared to the ceramics fabricated using the conventional one-step approach. An outstanding piezoelectric coefficientd33of 1103 pC/N and relative dielectric permittivityε33/ε0of 9154 was achieved for the ceramics withw= 0.5.Keywords:two different crystalline phases;PMNT-PSMNT;piezoelectric properties;dielectric properties
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 11
·14274-14285
·
IF 2.478
Gao Qianqian,Dai Yuqiang,Wei Xile,Zhou Changping,Gong Wenfeng,Song Haixiang,Guo Zhanhu,Li Chengbo
The Aurivillius compound Pb x Bi 6− x Fe 0.5 Co 0.5 Ti 4 O 18 thin films were prepared via chemical solution deposition method and the influence of Pb 2+ ions doping on the structure, ferroelectric and leakage properties were studied. With the increasing concentration of Pb 2+ ions, the lattice distortion is increased and the growth of the films along ab plane is promoted. The calculation results show that the internal stress of the films increases with the increase of Pb 2+ concentration. For the samples with low Pb 2+ doping concentration ( x < 0.6), the leakage current densities are also decreased, which can be attributed to the decrease in oxygen vacancy concentration. Due to the enhanced lattice distortion and decreased leakage current densities, the ferroelectric properties are improved. The film with x = 0.2 has a high saturation polarization of 42.3 µC/cm 2 . According to the fitting results, the leakage conduction mechanism is attributed to the combined effect of space-charge-limited conduction mechanism and ionic conduction mechanisms.
研究领域:
材料科学
·
凝聚态物理
·
功能材料
·
铁电学
·
薄膜制备
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2023
·Vol. 52
·期 11
·7193-7207
·
IF 2.1
Yuan ChongXiao,Zhang Chao,Yang Cheng,Wu Fuling,Xiao Shibing,Sun Huajun
Flexible wearable sensing devices are in great demand for self-powered systems. In this study, we fabricated fiber films of poly(vinylidene fluoride) (PVDF) matrix embedded with modified lead zirconate titanate nanoparticles (PZT NPs) using the electrospinning process. Each fiber film was cut into small pieces of 2 × 2 cm 2 , and pairs of pieces were pressed with a hot-pressing method. Modified PZT NPs with a high piezoelectric coefficient were embedded in PVDF fibers as a piezoelectric-reinforcing phase, which promoted the formation of the polar β phase in PVDF. The embedded PZT NPs affected the distribution of the polarized electric field and formed a local electric field between two PZT NPs, which promoted the polarization of PVDF, thereby enhancing the piezoelectric properties of PVDF/PZT NPs fiber films. The piezoelectric coefficient ( d 33 ) of the PVDF/PZT NPs fiber films embedding 4 wt.% PZT NPs showed the most significant enhancement, from 12 pC/N for neat PVDF to 21 pC/N, which is an approximately 75% improvement. The results of this work demonstrate the great potential application of piezoelectric composite fiber films in flexible wearable sensing devices.
研究领域:
材料科学
·
纳米技术
·
传感器
·
可穿戴技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Xiaofei Liu,Jian Wang,Zhonghui Shen,Hongjian Zhang,Baowen Li,Yong Zhang,Xin Zhang
Flexible organic/inorganic piezoelectric nanocomposites are highly demanded for flexible wearable electronic devices due to their excellent mechanical flexibility and high piezoelectric performance. However, the output performance of ceramic-polymer-based piezoelectric nanogenerators (PENGs) is restricted by the poor electrical conductivity of the organic matrix and the distinct discrepancy in mechanical strength between inorganic filler and organic matrix. Herein, we propose a flexible piezoelectric polymer nanocomposite based on CNTs@PZT nanofibers (NFs) network where the carbon nanotubes (CNTs) were introduced into the piezoelectric lead zirconate titanate (PZT) NFs to simultaneously improve the electrical conductivity and mechanical strength of nanocomposites. When subjected to a periodical bending deformation , the CNTs@PZT NFs network-based PENG with optimal addition of CNTs (0.6 wt%) generates a maximum electrical output up to ∼12.5 V and ∼80 nA cm −2 which is four times higher than that of PENGs without CNTs doping. An ultrahigh power density of 91.7 nW cm −2 is obtained with an external load resistance of 40 MΩ when pressed via a 10 N compressive force , and furthermore, the generated power could charge a capacitor and further light a commercial LED. This work may pave a new way for the development of high-output nanocomposite-type PENGs.
研究领域:
材料科学
·
纳米科技
·
能源材料
·
柔性电子学
·
功能材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Liang Cao,Jiajia Wang,Feifan Hu,Huihui Liu,Jian Guo,Haoran Yu,Mingyuan Yan,Ji Zhang,Feifei Wang,Yiping Wang,Shan-Tao Zhang
In this work, based on the lanthanide rare earth Sm3+ doped 0.2Pb(Mg1/3Nb2/3)O3-(0.8-x)PbZrO3-xPbTiO3:0.015Sm ceramics with a rhombohedral-tetragonal morphotropic phase boundary (MPB) around x = 0.40, we gradually introduced alkaline earth Ba2+ and Sr2+ at the A-site to substitute Pb2+, namely, 0.2A(Mg1/3Nb2/3)O3-0.4AZrO3-0.4ATiO3:0.015Sm (A = Pb0.99-yBa0.01Sry) and conducted a systematic study on their phase structure, domain configuration, and electrical properties. The results indicate that without alkaline earth substituting, the MPB composition shows peak electrical property with piezoelectric coefficient d33 = 477 pC/N and electromechanical coupling factor kp = 0.59, while an appropriate amount of alkaline earth substituting changes the MPB from rhombohedral–tetragonal coexisting phases to rhombohedral–monoclinic–tetragonal coexisting phases, leading to a significant enhancement in electrical properties with d33 = 687 pC/N and kp = 0.63 around y = 0.03 for comparison. This work classifies the mechanism for alkaline earth substituting enhanced piezoelectric performance and may provide a guide for the development of high-performance lead-based relaxor ferroelectrics.
研究领域:
材料科学
·
陶瓷材料
·
铁电材料
·
固态物理学
✓ 已验证
产品关联
DOI
PubMed
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
Microsystems & Nanoengineering
·
2025
·Vol. 11
·期 1
·1-14
·
IF 9.9
Liang Shan,Liu Shiwei,Long Zhihe,Li Xiaojiao,Han Qian,Wei Xianhao,Xing Lili,Xue Xinyu,Chen Meihua
Atopic dermatitis is a chronic inflammatory skin condition that typically manifests in infancy and is characterized by dry, irritated skin. Here, we propose a self-powered hydration-monitoring and drug-delivery skin patch for closed-loop treatment of atopic dermatitis. The patch is composed of piezoelectric generator, hydration sensing unit, microneedle treatment module and flexible circuit. The piezoelectric PZT generator can achieve self-powering by harvesting mechanical energy from patient activities, allowing for long-term work of the system without external power sources. The hydration sensing unit can rapidly and accurately detect changes in skin hydration by estimating the thermal conductivity. Upon detecting abnormal skin hydration levels for 65 s, the treatment module is automatically activated, heating hyaluronic acid-based microneedles (~42 °C) to release dexamethasone sodium phosphate (DEX), thereby providing timely targeted therapy and moisturization to the affected area within minutes. Therapeutic results in mice model of atopic dermatitis demonstrate that our patch can effectively treat this skin disease, improving the epidermal thickness, IL-4, spleen size and mass. The system achieves closed-loop detection and treatment of atopic dermatitis without external intervention, offering a novel approach to managing skin disease and expanding the scope of self-powered biomedical engineering systems. A self-powered hydration-monitoring and drug-delivery skin patch is designed for closed-loop treatment of atopic dermatitis. The patch composes of piezoelectric generator, hydration sensing unit, microneedle treatment module, and flexible circuit. This integrated system achieves closed-loop detection and treatment of atopic dermatitis without external intervention, offering a novel approach to managing skin disease and expanding the scope of self-powered biomedical engineering systems
研究领域:
生物医学工程
·
皮肤病学
·
智能药物递送系统
·
柔性电子学
·
能量收集
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）