ACS Applied Electronic Materials
·
2026
·
IF 4.7
Yi Han,Yichao Wang,Dong Liu,Xiang Hui,Xiaoshuang Ma,Pengju Sun,Jianqiang Li,Zhipeng Xing,Zhenfu Zhang,Li-Feng Zhu
(K,Na)NbO3-based ceramics are promising lead-free piezoelectrics due to their excellent piezoelectric coefficient (d33) and high Curie temperature (Tc), but their poor mechanical properties limit high-reliability applications. To address this issue, 0.97K0.5Na0.5Nb0.95Sb0.05O3-0.03Bi0.5Na0.5ZrO3-0.5%wtBiFeO3-xZrO2(KNNS-xZrO2) textured ceramics were developed. Excessive ZrO2 improved mechanical performance, while <001>-oriented samples exhibited strong piezoelectricity. At x = 0.01, the ceramics achieved high values in the KNN system: d33 ∼ 326 pC·N−1, Hv ∼ 8.46 ± 0.14 GPa, E ∼ 172 ± 4 GPa, and fracture toughness KIC ∼ 1.70 ± 0.09 MPa·m1/2. Based on these outstanding properties, a KNNS-0.01ZrO2 piezoelectric wristband was fabricated to monitor human heart rate, producing stable current signals under different motion states. This work provides insights for reliable piezoelectric sensors and actuators.
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DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2025
·
IF 2.6
Hou Peng-qing,Qu Yingdong,Huang Rui,Tian Xinru,Li Guanglong,Luo Shaohua
Li 2 FeTiO 4 cathode has emerged as a promising option for lithium-ion batteries because of its outstanding capacity and eco-friendly properties. However the abominable conductivity and ion transports hindered its electrochemical performance. In this work, (Li 1-x K x ) 2 FeTiO 4 (LiFT-Kx, x = 0 and 0.01) cathode materials with were successfully synthesized. Remarkably, there was a notable improvement in the properties of interlayer spacing, ionic conductivity and kinetics. As a result, LiFT-K0.01 cathode expressed splendid initial capacitance (108.8 mAh g −1 , 0.05 C), stability (82.9% over 30 cycles), and rate performance (89.8 mAh g −1 , 82.4% of the original values). This work might provide valuable insights for the exploration of lithium storage with excellent long-term stability, and it might open new possibilities for the development of advanced energy storage technologies based on lithium-ion batteries.
研究领域:
材料科学
·
能源存储技术
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DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2024
·
IF 7.2
Meng Cao,Jisheng Song,Haonan Ren,Fan Yang,Rong Chen
With the development of integrated circuit miniaturization, the RC delay caused by the interconnect resistance of metal wires and the capacitance of interlayer dielectric materials limits the high integration and miniaturization of electronic devices. As a promising low-k dielectric material, metal–organic frameworks (MOFs) can effectively alleviate this problem. In this work, we report an atomic regulation strategy of ultralow k MIL-53 film, achieved by converting an Al2O3 seed layer deposited via atomic layer deposition (ALD) and subsequently modifying through atomic layer infiltration (ALI). Thanks to the linear relationship between the thickness of the MIL-53 film and the Al2O3 seed layer prepared by ALD, precise nanoscale control of the MIL-53 films was realized. To meet both mechanical and dielectric property requirements, ALI modification is introduced, effectively regulating Young’s modulus and hardness of MIL-53 films from 19.5 and 0.17 GPa to 29.1 and 0.36 GPa, respectively, while the dielectric constant can be tuned from 1.93 to 2.59. The reconciliation of these properties is achieved by regulating the porosity of the MIL-53 framework through the additional Al–O clusters during the ALI. Furthermore, the superhydrophobic properties (140.7°) and the nearly constant dielectric constant after 9 months of aging reflect its potential as a dielectric insulating material. The proposed preparation and modification strategy of MOF films based on atomic regulation has broad potential for application in low-k interconnect integrated circuits.
研究领域:
材料科学
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电子工程
·
纳米技术
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DOI
高影响因子
Nanoscale Horizons
·
2025
·
IF 6.6
Si-Ye Tong,Cong-Min Huo,Yu-Cheng Zuo,Shuo Gao,David Tai Leong,Wei Xue,Jing-Yi Zhu
Immunosuppression from the tumor microenvironment plays a key role in the failure of cancer immunotherapy. The presence of potassium ions (K+) from dying tumor cells creates an immunosuppressive environment that encourages tumor-associated macrophages (TAMs) to adopt a pro-tumor M2-like phenotype. Alleviating immune suppression from the high K+ environment might boost innate immunity and fight tumor growth. Herein, disulfide-rich mesoporous silica modified with 18-crown-6 ether was developed as a nanocarrier (D-C) to load ML133, encapsulating with the DiR-embedded macrophage membrane (CM) to create D-C/M@CM/DiR. We first saturated the phagocytosis of the mononuclear phagocyte system (MPS) with blank nanocarriers to enhance the tumor accumulation of D-C/M@CM/DiR, which was coated with the same CM. 18-Crown-6 ether captures K+ to reduce immunosuppression, while ML133 promotes the polarization of TAMs to an anti-tumor M1 phenotype by targeting the K+ channel protein Kir2.1 on their membranes. This strategy activates the anti-tumor immune response and effectively inhibits tumor growth.
研究领域:
肿瘤学
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免疫学
·
药剂学
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Gang Li,Ruiyang Tan,Bohong Gao,Yuting Zhou,Chengcheng Zhang,Ping Chen,Xinyi Wang
Electromagnetic wave absorption (EMWA) materials with qualities such as low cost, thin thickness, and high efficiency are of tremendous value in addressing the challenges posed by EMW pollution. Herein, we have successfully synthesized a nanoflower-like composite from the Prussian blue analog KCoFe(CN) 6 through a combination of hydrothermal and post-annealing methods. Subsequently, we prepared the hierarchical composite CoFe-K/GC@MnO 2 @MXene (CMM) by electrostatic self-assembly with few-layered Ti 3 C 2 T x nanosheets . Their chemical compositions, microstructures, and EMWA performances were thoroughly investigated. The CMM composite demonstrated outstanding EMWA performance with an impressive minimum reflection loss ( RL min ) value of −53.0 dB at 1.68 mm and an effective absorption bandwidth (EAB) value of 4.0 GHz with an ultrathin-matching thickness of only 1.55 mm. The exceptional EMWA performance of CMM can be attributed to the increased conductive loss, enhanced interfacial polarization, and optimized impedance matching. Simulated radar cross-section (RCS) plots confirm the outstanding RSC reduction achieved by the CMM absorber coating. Furthermore, the EAB can be extended to 12.12 GHz by designing a macro 3D quadrangular frustum pyramid structural model for the absorber. The practical application potential of CMM was also enhanced by its good heat dissipation capability, which was demonstrated in real-time using an infrared thermal imager. This work provides a novel insight into developing efficient and multifunctional EMWA materials for practical applications.
研究领域:
材料科学
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电磁学
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Jing Zheng,Shenluo Zang,Chi Hu,Luanjie Nie,Hang Chen,Xiaokang Chu,Hao Wang,Mengtao Ma,Qingxue Lai
Modified graphite (MG) with rough edges and reduced crystal particles is developed via ball-milling treatment for commercializable K-storage anode. Importantly, rational electrolyte regulation significantly improves the reaction dynamics as well as reversibility of potassiation/depotassiation behaviors, resulting into a high and stable reversible capacity of 277 mA h g −1 at 200 mA g −1 after 250 cycles in the optimized 3 M KFSI/EC + DEC electrolyte. The enhanced K + -solvents interaction with aggregates (AGGs)-rich solvated structures is revealed to be responsible for the excellent K-storage performance. Furthermore, electrolyte flammability evaluation confirms the remarkably suppressed flammability of the optimized 3 M KFSI/EC + DEC, providing enough security for practical applications of PIBs .
研究领域:
储能
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材料科学
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电化学
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电池技术
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DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2020
·
IF 3.333
Da Xu,Chenyi Zhou,Yunhe Zhang,Jinhui Pang,Zhenhua Jiang,Haibo Zhang
Polyaramid is an indispensable high-performance material for its excellent thermal stability and mechanical strength . But its ultra high melting temperature which is higher than its decomposition temperature and the strong solvent resistance makes it difficult to process. In this work, we prepared a new series of soluble polyamides , poly(arylene ether naphthalene amide)s (PENA), by introducing both naphthalene and phenyl ether groups to the main chain of the polyaramid. The relationship between phenyl ether content and properties of PENAs were investigated. These PENAs have good solubility and can be made into strong and tough films by solvent casting method. Among them, poly(mono arylene ether naphthalene amide)PMENA, which contains mono-ether structure in the polymerization unit, shows the best performance with a tensile strength of 118 MPa and an elongation at break of 45%. Furthermore, PMENA also has good and stable dielectric properties with a high permittivity of 4.7, and low dielectric loss of 0.03 at 1 kHz, at room temperature .
研究领域:
材料科学
·
高分子化学
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2021
·Vol. 104
·期 9
·4782-4787
·
IF 3.784
Lilian Yang,Youling Hou,Guishang Pei,Yuntao Xin,Xuewei Lv
Sodium-ion batteries (NaIBs) have attracted extraordinary attentions as a promising scalable energy storage alternative to current lithium-ion batteries (LIBs), owing to their natural abundance and low costs. Sodium trititanate (Na 2 Ti 3 O 7 ) is a promising material as the material of NaIBs with low potential and high theoretical capacitance. In order to better understand their service performance when utilized in rechargeable NaIBs, studies on thermodynamic properties of Na 2 Ti 3 O 7 are indispensable. However, an extensive literature review revealed that the heat capacity of Na 2 Ti 3 O 7 is established with divergences, especially for high-temperature region. Therefore, the 99.5% purity of Na 2 Ti 3 O 7 powder was first Synthesized through solid-state reaction with sodium carbonate (Na 2 CO 3 ) and titanium dioxide (TiO 2 ) as raw materials. The as-prepared samples were used to measure the heat capacity from 573 to 1323 K which was carried out with multihigh temperature calorimeter (MHTC) 96 line. The temperature dependence of heat capacity was modeled as a function: Cp =255.51073 + 0.06059 T − 3.86912 × 106 T −2 (J mol −1 K −1 ) (298.15 - 1403 K), and then used for computing changes in enthalpy, entropy, and Gibbs free energy. Heat capacity of Na 2 Ti 3 O 7 from 0 to 1403 K was given for future application of Na 2 Ti 3 O 7 in rechargeable batteries.
研究领域:
材料科学
·
热力学
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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2011
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IF 2.089
Jun Li,Yinmei Ye,Lifang Chen,Zhiwen Qi
The solubilities of CO2 in solvent poly(ethylene glycols) (PEGs) with molecular weights of 150, 200, 300, and 400 were measured over the range of pressure from (100 to 1200) kPa and temperature from (303.15 to 333.15) K. Henry's constant was obtained by linear fitting of the experimental data, and thermodynamic properties of solutions were calculated from the correlation of Henry's constant. It indicates that the solubility of CO2 increases with increasing molecular weights of PEGs. Henry's constant based on mole fraction and the molality of CO2 in PEG400 vary from (4.78 to 7.09) MPa and (1.56 to 2.48) MPa·kg·mol–1 from (303.15 to 333.15) K, respectively.
研究领域:
化学工程
·
物理化学
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DOI
高影响因子
FLUID PHASE EQUILIBRIA
·
2014
·
IF 2.241
Keyi Wu,Yonghong Hu,Wenge Yang,Tuan Zhang,Qirun Guo,Shouhai Yang,Ying Shi
The solubility of N-Ethylcarbazole in methanol, ethanol, n-propanol, isopropanol, 1-butanol, 1-pentanol and petroleum ether was measured over the temperature range of 279.15–319.15 K at around 4 K intervals under atmospheric pressure. Experimental result showed that the solubility of N-Ethylcarbazole in seven solvents increased with the increasing temperature and they were in good agreement with the calculated solubility of the modified Apelblat equation and the λh equation. The thermodynamic properties of the solution process, including the Gibbs energy , enthalpy, and entropy were calculated by the van’t Hoff analysis. The values of both the standard molar enthalpy change and standard molar Gibbs energy change of solution were positive, which indicated that the process was endothermic.
研究领域:
物理化学
·
材料科学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 33
·期 2
·596-606
·
IF 2.478
Hu Haisheng,Jiang Qun,Li Yunfei,Liu Meitang
The K + -doped (Na 1− x K x )GdF 4 :Er 3+ ,Yb 3+ upconversion materials were successfully synthesized by solvothermal method. The doping of K + was testified to have great influences on improving upconversion properties as it directly affects the morphology of the material matrix. In addition, by coating the doped material with a homogeneous shell layer, a newly developed core–shell (Na 0.9 K 0.1 )GdF 4 :Er 3+ ,Yb 3+ @NaGdF 4 nanomaterials were produced. Surprisingly, its light emission intensity was 2 times of that for the uncoated material, although the crystal structure and the emission color of the nanoparticles did not change. The upconversion mechanism has also been studied, and the results show that there is a two-photon mechanism of (Na 1− x K x )GdF 4 :Er 3+ ,Yb 3+ . The work provides a new strategy for enhancing the luminescence density of upconversion materials by coating a homogeneous shell after doping.
研究领域:
材料科学
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光学
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高影响因子
FOOD HYDROCOLLOIDS
·
2022
·
IF 11.504
Liang Zhang,Wenze Wang,Yongsheng Ni,Chengyuan Yang,Xinyi Jin,Yuxuan Wang,Yanyu yang,Yezi Jin,Jing Sun,Jianlong Wang
To combat the kumquat rot triggered by food-borne microorganisms, this work pioneered the concept of pseudo-pasteurization and integrated it with packaging technology to develop a novel antibacterial packaging film for the storage and preservation of kumquats. In detail, ZnO-doped carbon nanoparticles (ZnO/C) with excellent photothermal properties were first constructed by annealing the ZIF-8 precursor, and then incorporated into the K-carrageenan (KC) matrix as a filler to obtain a series of ZnO/C-KC nanocomposite films. The as-prepared ZnO/C-KC films exhibited the outstanding antibacterial properties (Antibacterial rate ≥99.8%) by virtue of the synergistic effect between NIR-induced autogenous heat and coexisting ZnO components, wherein the equilibrium temperature (60–62 °C) and holding time (5 min) of the film sterilization were significantly lower than that of the traditional pasteurization . The extended shelf-life of kumquats further confirmed the enhanced preservation capacity of ZnO/C-KC films. Furthermore, with the embedding of ZnO/C particles, although the color and transparency of films were slightly lost, the tensile strength, thermal stability, hydrophobicity, and barrier ability have been improved to varying degrees. Finally, the qualified safety of films was also verified through hemolysis and cell cytotoxicity experiments. The successful construction of this antibacterial film may provide new ideas for the innovation of traditional pasteurization and the functionalization of packaging films.
研究领域:
食品科学
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材料科学
·
包装技术
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生物技术
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高影响因子
危险品化学品经营许可证（带存储）