MOLECULES
·
2024
·Vol. 29
·期 9
·1946
·
IF 4.2
Yan Ma,Kai Wang,Sikai Liang,Zhongqing Li,Zhiyuan Wang,Jun Shen
The Mn-Fe oxide material possesses the advantages of abundant availability, low cost, and non-toxicity as an energy storage material, particularly addressing the limitation of sluggish reoxidation kinetics observed in pure manganese oxide. However, scaling up the thermal energy storage (TCES) system poses challenges to the stability of the reactivities and mechanical strength of materials over long-term cycles, necessitating their resolution. In this study, Mn-Fe granules were fabricated with a diameter of approximately 2 mm using the feasible and scalable drop technique, and the effects of Y2O3-stabilized ZrO2(YSZ) and SiO2doping, at various doping ratios ranging from 1–20 wt%, were investigated on both the anti-sintering behavior and mechanical strength. In a thermal gravimetric analyzer, the redox reaction tests showed that both the dopants led to an enhancement in the reoxidation rates when the doping ratios were in an appropriate range, while they also brought about a decrease in the reduction rate and energy storage density. In a packed-bed reactor, the results of five consecutive redox tests showed a similar pattern to that in a thermal gravimetric analyzer. Additionally, the doping led to the stable reduction/oxidation reaction rates during the cyclic tests. In the subsequent 120 cyclic tests, the Si-doped granules exhibited volume expansion with a decreased crushing strength, whereas the YSZ-doped granules experienced drastic shrinkage with an increase in the crushing strength. The 1 wt% Si and 2 wt% Si presented the best synthetic performance, which resulted from the milder sintering effects during the long-term cyclic tests.
研究领域:
材料科学
·
能量存储
·
热能工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Mingrun Du,Yuhan Xiao,Xiang Liu,Yu Ma,Yingdong Han,Zepeng Li,Tong Wei,Yunling Zou,Yuan Li,Degong Gao,Huanbin Li
In this work, the phase and property transformations of (La 0.2 Nd 0.2 Sm 0.2 Eu 0.2 Gd 0.2 ) 2 Zr 2 O 7 (RZHEO)/YSZ (oxide-yttria stabilized zirconium) mixture after calcination treatment at 1500 °C are studied. During the calcination process, RZHEO decomposes and the rare earth ions (RE) diffuse into the lattice of YSZ , resulting in the formation of new RE doped ZrO 2 compounds with a mixed phase of c-ZrO 2 and t-ZrO 2 . The thermal expansion coefficients (TECs) of the compounds are 11–12.6 × 10 −6 K −1 between the TEC values of YSZ and RZHEO. Their Vickers hardnesses (10.8–13.9 GPa) are much higher than that of RZHEO but close to YSZ. Strikingly, The photoluminesence (PL) intensity of the compound changes with the mass fraction (x) of RZHEO in the initial mixture. Furthermore, the position of the most intense PL peak and the (I 605 /I 590 ) value of 1:19 sample (x = 0.05) are sensitive to pressure, implying a promising for optical stress sensing application. This work contributes to understand the structural and property evolutions of the interface between the ceramic layers in high entropy rare earth zirconates/YSZ double layer thermal barrier coatings (DL-TBCs) under high temperatures, and provide a new strategy for designing novel DL-TBCs with desirable optical sensing application.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Yansong Liu,Yongsheng Liu,Yejie Cao,Xiang Zheng,Xiaokun Sun,Yang Xu
Dual porous yttria-stabilized zirconia (YSZ) ceramics were fabricated via digital light processing (DLP) additive manufacturing using polymethyl methacrylate (PMMA) microspheres as pore-forming agent for the first time. The results showed that the introduction of PMMA microspheres effectively reduced the viscosity of the photosensitive YSZ ceramic slurry used in DLP printing, improved the cured depth of the slurry, and did not exert a strong influence on stability. After sintering at 1400°C, pores with dual scales were generated in the ceramics, while exhibiting the optimal physical and mechanical properties. With the increase of PMMA content from 0 to 40 vol%, the open porosity increased from 1.96% to 34.06% and the density decreased from 5.92 to 3.82 g/cm 3 , respectively. The compressive strength and thermal conductivity of porous ceramics decreased from 350.54 to 99.85 MPa and from 2.80 to 1.46 W/(m⋅K), respectively. This investigation opens up new prospects for the fabrication of porous YSZ ceramics with low thermal conductivity and high mechanical properties.
研究领域:
材料科学
·
增材制造
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Wenjie Yuan,Jinlong Liao,Songde Huang,Dakun Song,Qinting Su,Cuihua Li,Jinhua He
Solid lithium metal batteries with solid polymer electrolytes have advantages in terms of high energy density and safety. However, their application is still hindered by unstable solid electrolyte interfaces (SEI and CEI) and uncontrolled dendrite growth. Here, a composite skeleton loaded with dielectric filler yttrium stabilized zirconia nanoparticles (YSZ) on the surface of PVDF-HFP nanofiber filaments is designed, and a novel composite solid electrolyte (CSE) is prepared by in-situ polymerization of DOL (1,3-dioxolane) on this framework to achieve safe and stable high-voltage lithium metal battery (LMB). The dual stable electrode interfaces (CEI and SEI) constructed by in-situ can effectively suppress the generation of lithium dendrites and suppress the degradation of the high-voltage NCM811 positive electrode structure and the generation of cracks in NCM811 particles, endowing the battery with extraordinary performance. The as-obtained CSE exhibits high ionic conductivity of 1.01 × 10 −3 S cm −1 at 30 °C, the enlarged electrochemical window of 6.0 V, and the Li + transference number is 0.72. The assembled Li|NCM811 battery is capable of stable cycling for 400 cycles at a cut-off voltage of 4.5 V and current density of 1C, with a capacity decay of only 0.074 % per cycle. .
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Kaizhi Gu,Shixiao Yan,Maiping Yan,Xiaoli Shi,Zifan Zhao,Jing Feng
In this paper, Ni-coated YSZ powder and flame-retardant APP were introduced into phenolic resin-epoxy resin composite system by organic-inorganic mixed flame retardant strategy. Through a series of experimental tests, it was found that the TSR (total smoke release), THR (total heat release), total CO production (TCOP) and TCO2P (total CO 2 production) of the composite resin system with the same mass of APP and Ni@YSZ decreased by 53.5 %, 45.8 %, 13.6 % and 45.5 % respectively. The synergistic effect of Ni@YSZ and APP and its product Ni 2 P 2 O 7 improved the formation and structure of carbon layer. Thus, the fire hazard of epoxy resin is reduced, and the situation that a large amount of heat and toxic substances are released by decomposition is improved. In addition, the composite coating achieves an EAB (effective absorption bandwidth) of 1.11 GHz (16.77 GHz–17.88 GHz) in the ku band of electromagnetic waves. When the frequency is 17.60 GHz, the lowest RL (reflection loss) (−17.02 dB) is achieved. This discovery provides a simple and effective idea for developing light stealth and fire protection integrated functional coatings.
研究领域:
材料科学
·
防火与隐身技术
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2020
·
IF 3.784
Yongchao Fang,Xiufang Cui,Guo Jin,Erbao Liu,Dan Zhang,Xin Wen,Qingbo Mi
In this work, hot corrosion behavior of air plasma sprayed La 0.8 Ba 0.2 TiO 3-δ (LBT)-YSZ double-ceramic-layer thermal barrier coating exposed to Na 2 SO 4 + V 2 O 5 molten salt at 900 °C for 20 h was investigated. The phase characterization and microstructural evolution analysis of the coating was carried out after the hot corrosion test by using X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). The results showed that the LBT-YSZ coating possessed excellent hot corrosion resistance compared with the conventional pure YSZ coating. The conventional pure YSZ coating was completely destroyed after the 10 h test due to the volume change resulting from the adverse phase transition. However, the situation for the LBT-YSZ coatings is completely opposite. The LBT-YSZ coating could prevent the YSZ interlayer underlying the LBT overlayer from densification for at least 20 h. In the LBT overlayer, the double-reaction-layer composed of under dense layer and upper porous layer was formed. In particular, the continuous dense layers with a thickness of ~100 μm formed after 10 h, effectively arresting further penetration of the molten salt. In addition, affected by the diffusion extent of SO 3 gas, the corrosion products of porous layer were composed of Ba 2 V 2 O 7 , LaVO 4 , TiO 2 and BaSO 4 , while those of dense layer consisted of Ba 2 V 2 O 7 , LaVO 4 and TiO 2 . The specific mechanism by which the corrosion reaction occurred was proposed based on Lewis acid-base rule and thermodynamics.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Xu Rui,Song Jing,Zhao Shijiao,Nie Lei,Deng Changsheng,Hao Shaochang,Zhao Xingyu,Liu Bing,Ma Jingtao
The internal gelation process without cooling at room temperature is a significant challenge for the preparation of yttria-stabilized zirconia (YSZ) ceramic microspheres . In this work, a high-throughput and instant-mixing droplet microfluidic system that can prepare monodisperse YSZ ceramic microspheres was constructed. It mixed two stable solutions at room temperature in an active micromixer at a flow rate of mL/min, and then the mixed unstable precursor solution was quickly dispersed into sol droplets through a coaxial microfluidic device, and the droplets solidified into gel microspheres. The washed and dried gel microspheres could be sintered to obtain ceramic microspheres. Compared with no-micromixing and T-junction micromixers, the system had the best mixing performance and Y and Zr elements in the prepared ceramic microspheres were evenly distributed. Therefore, the system overcame the problem of precursor solution solidification and clogging of the device, and provided a new approach for the internal gelation process without cooling at room temperature.
研究领域:
材料科学
·
陶瓷
·
微流控技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2016
·
IF 2.758
Junpeng Luan,Jingde Zhang,Xiaomei Yao,Fei Li,Baoxin Jia
Bi 2 O 3 /YSZ (Y 2 O 3 -stabilized ZrO 2 ) composite powders for solid electrolytes application were synthesized by chemical co-precipitation method. The effects of raw material ratios and temperatures on the properties of the composite powders were studied. The morphology, crystal structure and phase composition of the composite powders were characterized by means of field emission scanning electron microscope (FESEM), energy dispersive spectrometer (EDS) and X-ray diffraction (XRD). The results showed that the Bi 2 O 3 /YSZ composite powders could be fabricated by chemical process, and the composite powders with different shapes were prepared when the ratio of raw materials or temperature changed. The one-dimensional rod-like Bi 2 O 3 particles were obtained when the content of Bi 2 O 3 was above 10 mol% or the heating mechanism was changed. And the growth mechanism of Bi 2 O 3 in the synthesis process was studied. The oriented attachment with interaction of Ostwald ripening was the possible growth mechanism.
研究领域:
材料科学
·
化学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Yiran Zhang,Bang Xiao,Lin Yang,Anqi Jiao,Ke Li,Chunping Wu,Reggie Zhan,Zhen Huang,He Lin
YSZ-based mixed-potential sensors with double-sensing electrodes were fabricated for ammonia (NH 3 ) detection. ZnO and LaCoO 3 nanoparticles prepared by flame spray pyrolysis (FSP) method were used as the sensing materials. The sensing responses of ZnO and LaCoO 3 sensing electrodes can be overlapped based on the double-sensing-electrode structure, thereby significantly enhancing the sensitivity compared with the traditional mixed-potential sensors using Pt reference electrode. The sensitivities of this sensor reached up to -102.85, -75.312, -70.165, -48.616 mV/decade to 10–50 ppm NH 3 at 450, 475, 500, 525 ℃ , respectively. Moreover, the NO 2 interference effects on NH 3 detection of ZnO and LaCoO 3 electrodes were opposite and can be counteracted based on the double-sensing-electrode structure, eliminating most of the cross-sensitivity to NO 2 . The double-sensing-electrode sensor exhibited good performance under CO, CH 4 , NO, NO 2 interference, oxygen fluctuation, and humidity variations, and showed good long-term stability. The results of sensing performance exhibited the sensors with double-sensing electrodes have a great potential for application on SCR system of diesel engines. In further studies, each sensing electrode can be optimized respectively and the sensitivity and selectivity of NH 3 sensors could be enhanced to a higher level.
研究领域:
传感器学
·
材料科学
·
环境监测
·
能源工程
·
气体传感
·
纳米材料
·
催化化学
✓ 已验证
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2014
·Vol. 12
·期 4
·823-829
·
IF 1.215
Rujie He,Daining Fang,Feng He,Yefan Wu
The influences of graphite particle size and HNO 3 treatment on microstructure and cell performance of the NiO–YSZ anode-supported solid oxide fuel cells were investigated. The peak power density for the cells using 1, 3, and 6 μm graphite was 679, 603, and 549 mW/cm 2 , respectively. HNO 3 treatment was an efficient approach to improve the wettability of graphite in water, to modify the microstructure and to enhance the cell performance. The peak power density for the cell using HNO 3 -treated graphite (1 μm) was 766 mW/cm 2 , approximately 13% higher than that of the cell using pristine graphite.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2023
·Vol. 16
·期 4
·1544
·
IF 3.4
Angxuan Wu,Yuchen Zhu,Chen Xu,Nianping Yan,Xuetong Zhao,Xilin Wang,Zhidong Jia
Arc floating in surface flashover can be controlled by reducing the interfacial charge-transfer resistance of ceramics. However, thus far, only a few studies have been conducted on methods of treating ceramic surfaces directly to reduce the interfacial charge-transfer resistance. Herein, we explore the flash sintering behavior of a ceramic surface (3 mol% yttria-stabilized zirconia (3YSZ)) onto which loose metal (iron) powder was spread prior to flash sintering at room temperature (25 °C). The iron powder acts as a conductive phase that accelerates the start of flash sintering while also doping the ceramic phase during the sintering process. Notably, the iron powder substantially reduces the transition time from the arc stage to the flash stage from 13.50 to 8.22 s. The surface temperature (~1600 °C) of the ceramic substrate is sufficiently high to melt the iron powder. The molten metal then reacts with the ceramic surface, causing iron ions to substitute Zr4+ions and promoting rapid densification. The YSZ grains in the metal-infiltrated area grow exceptionally fast. The results demonstrate that spreading metal powder onto a ceramic surface prior to flash sintering can enable the metal to enter the ceramic pores, which will be of significance in developing and enhancing ceramic–metal powder processing techniques.Keywords:flash sintering;room temperature;YSZ;metal powders;arc
研究领域:
材料科学
·
陶瓷加工
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Ying Qian,Jie Zou,Xiaoqing Jiang,Jie Wang,Juan Zhou,Chu Cheng,Xin Zhang,Wenming He,Qinghui Jin,Jiawen Jian
Yttria-stabilized zirconia (YSZ)-based amperometric humidity sensors are highly promising for in situ detection of high-temperature flue ducts due to their excellent stability and durability under extreme conditions. However, selectivity remains challenging due to the co-electrolysis of H 2 O and CO 2 , as these compounds have similar electrolysis voltages. In this study, LaFeO 3 is proposed as a sensing electrode to reduce CO 2 electrolysis and improve selectivity in amperometric humidity sensors. Analysis indicates that the improved selectivity is likely due to LaFeO 3 ’s lower electrochemical activity. Furthermore, the proposed sensor exhibits good repeatability and acceptable long-term stability for high-temperature humidity detection.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）