TRIBOLOGY INTERNATIONAL
·
2023
·
IF 6.2
Yongzhi Jing,Yongchao Fang,Xiufang Cui,Zhuo Chen,Dianchao Liu,Anying Liu,Xinhe Wang,Qicheng Li,Guo Jin,Haoliang Tian
Lanthanum zirconate coatings (La 2 Zr 2 O 7 , LZ) have a high Poisson’s ratio and low fracture toughness , making it indescribable for long service life at high temperatures. Rare earth doped lanthanum zirconate (RE-LZ) is an effective way to improve its mechanical properties . In this study, the lanthanum zirconate ceramic coating modified by binary rare earth ((La 1/3 Gd 1/3 Y 1/3 ) 2 Zr 2 O 7 , LGYZ; and (La 1/3 Sm 1/3 Yb 1/3 ) 2 Zr 2 O 7 , LGYZ) and multi-principal rare earth modified ((La 1/5 Gd 1/5 Y 1/5 Sm 1/5 Yb 1/5 ) 2 Zr 2 O 7 , HEC-LZ) was studied, aiming to improve the intrinsic mechanical properties of lanthanum zirconate ceramic coating. By comparing the mechanical properties such as fracture toughness, bonding strength , microhardness dissipation parameter, and solid erosion properties of various types of coatings, the results show that compared with binary rare earth modified coatings such as LGYZ and LSYZ, the elastic modulus of the HEC-LZ ceramic coating is reduced by 4.7–6.3%, the microhardness dissipation parameter (MDP) is increased by 4.8–10.2%, and the fracture toughness is increased by 5.2–7.4%. The HEC-LZ ceramic coating showed favorable toughness and crack resistance. Regarding the erosion resistance of the coatings, the ability of RE-LZ coatings is significantly better than that of LZ coatings, and the erosion rate at 45° and 90° is reduced by 44.9–66.0% and 45.7–62.9%, respectively.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Li Qin,Haifeng Yu,Hujun Zhang,Qilin Cheng,Ling Chen,Hao Jiang
All-dry solid-phase synthesis (ADSPS) is considered an eco-friendly and cost-effective method for preparing Ni-rich Co-poor cathodes, yet slow ion diffusion during the solid-phase sintering process results in agglomerate particles with severe Li/Ni mixing. Herein, a Mg/Sr-codoped and ZrO2-coated single-crystalline LiNi0.73Co0.05Mn0.22O2 cathode with a well-layered structure is fabricated through the ADSPS method. The Sr ions effectively accelerate the ion migration at the grain boundary to facilitate particle coarsening, while the Mg ions act as “pillar ions” to decrease the Li/Ni mixing and improve the structural stability. Moreover, the ZrO2 coating layer can further alleviate the interfacial side reactions to hinder the structure degradation and enhance the particle integrity. Therefore, the resultant single-crystalline cathodes deliver a high reversible capacity of 192.4 mAh g–1 and display an impressive retention of 87.5% after 300 cycles at 0.5 C in a pouch-type full cell. The ADSPS strategy in this work shows great potential for the synthesis of single-crystalline Ni-rich ternary cathodes for Li-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Jun-Ke Pi,Guang-Peng Wu,Hao-Cheng Yang,Christopher G. Arges,Zhi-Kang Xu
Porous separators are key components for lithium-ion batteries (LIBs) and they have drawn considerable attention because of their vital role in governing battery cost and performance (e.g., power density, safety, and longevity). Here, zirconia-coated separators were fabricated via a facile biomineralization process with the aim to improve the performance of commercialized polypropylene separators. The as-prepared organic–inorganic composite separators show excellent thermal stability, even at the melting temperature (160 °C) of polypropylene. This is due to the well-distributed zirconia coatings on the separator surfaces. Furthermore, the interfacial impedance of the composite separators is only 343.8 Ω, which is four times lower than the pristine polypropylene ones. The results demonstrate an attractive method to prepare organic–inorganic composite separators with outstanding properties, which makes them promising candidates for high-performance LIBs.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Suichang Ong,Huili Yang,Tu Lan,Kai Huang,Tianzheng Xie,Jinxia Zhou,Yuan Cheng,Hang Guo,Ying Zhang
Surface coating and element doping are the key strategies in LIBs development to achieve a high and stable battery performance. In this paper, ZrO 2 is directly sputtered on the Al-doped LiCoO 2 (Al-LCO) composite electrodes, enabling a controllable oxide coating on the surface of the electrode. With a sputtered coating layer of ∼6 nm, the discharging capacity of the Al doped LCO coated with ZrO 2 (Al-LCO-ZrO 2 ) is 141.04 mAh g −1 at the 100th cycle within 3.0–4.7 V at 1 C, while the Al-LCO (without coating layer) is 126.66 mAh g −1 . After 100 cycles of charging-discharging at high voltage region, the capacity retention of the Al-LCO-ZrO 2 -3 (90.7%) is also higher than the Al-LCO (75.57%). It is worth noting that, in this paper, due to the Al doping and the ZrO 2 coating, we increase the operation voltage up to 4.7 V, in which the batteries can obtain a higher energy density.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Laser & Photonics Reviews
·
2021
·Vol. 15
·期 10
·2100278
·
IF 13.138
Qionghua Mo,Chen Chen,Wensi Cai,Shuangyi Zhao,Dongdong Yan,Zhigang Zang
The photoluminescence quantum yield (PLQY) of CsPbBr 3 perovskite nanocrystals (NCs) prepared by the hot-injection method can exceed 90%, which have attracted intensive attention for white light-emitting diodes (WLEDs). However, the whole hot-injection experiment requires air isolation and relatively high temperature. In addition, the poor stability of CsPbBr 3 NCs impedes their applications. Here, a facile method is reported to synthesize CsPbBr 3 @ZrO 2 NCs at room temperature in air. Owing to using ZrO 2 coated CsPbBr 3 NCs, the prepared CsPbBr 3 @ZrO 2 NCs not only present a PLQY of 80% but also exhibit an enhanced stability to heat and moisture. Furthermore, WLEDs are fabricated with CsPbBr 3 @ZrO 2 NCs and commercial red phosphors (CaAlSiN 3 :Eu 2+ ) on blue LEDs chips. The fabricated WLEDs exhibit a correlated color temperature (CCT) of 4743 K and luminous efficacy as high as 64.0 Lm W –1 . In addition, visible light communication with a high data rate of 33.5 Mbps is achieved using the WLEDs. This work provides a room temperature strategy to coat zirconia for CsPbBr 3 @ZrO 2 NCs, benefiting to enhance the optical performance and stability, as well as the promotion of the great potentials in solid-state illuminating and visible light communication applications.
研究领域:
材料科学
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光学工程
·
纳米技术
✓ 已验证
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 12
·3017
·
IF 3.1
Jianmeng Wu,Jiaqi Xie,Mengyuan He,Jingyi Zhang,Songjie Li
Hydrogen atoms can enter into metallic materials through penetration and diffusion, leading to the degradation of the mechanical properties of the materials, and the application of hydrogen barrier coatings is an effective means to alleviate this problem. Zirconia coatings (ZrO2) have been widely studied as a common hydrogen barrier coating, but zirconia undergoes a crystalline transition with temperature change, which can lead to volumetric changes in the coating and thus cause problems such as cracking and peeling of the coating. In this work, ZrO2coating was prepared on a Q235 matrix using a sol-gel method, while yttria-stabilized zirconia (YSZ) coatings with different contents of rare earth elements were prepared in order to alleviate a series of problems caused by the crystal form transformation of ZrO2. The coating performances were evaluated by the electrochemical hydrogen penetration test, pencil hardness test, scratch test, and high-temperature oxidation test. The results show that yttrium can improve the stability of the high-temperature phase of ZrO2, alleviating the cracking problem of the coating due to the volume change triggered by the crystalline transition; improve the consistency of the coating; and refine the grain size of the oxide. The performance of YSZ coating was strongly influenced by the yttria doping mass, and the coating with 10 wt% yttria doping had the best hydrogen barrier performance, the best antioxidant performance, and the largest adhesion. Compared with the matrix, the steady-state hydrogen current density of the YSZ coating decreased by 72.3%, the antioxidant performance was improved by 65.8%, and the ZrO2coating hardness and adhesion levels were B and 4B, respectively, while YSZ coating hardness and adhesion were upgraded to 2H and 5B. With the further increase in yttrium doping mass, the hardness of the coating continued to improve, but the defects of the coating increased, resulting in a decrease in the hydrogen barrier performance, antioxidant performance, and adhesion. In this work, the various performances of ZrO2coating were significantly improved by doping with the rare earth element, which provides a reference for further development and application of oxide coatings.
研究领域:
材料科学
·
表面工程
·
氢能技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2019
·Vol. 45
·期 10
·4959-4973
·
IF 2.064
Fu Lixin,Shi Liyi,Wang Zhuyi,Zhu Jiefang,Zhao Yin,Yuan Shuai
Abstract In this paper, a simple and feasible method for preparing gel polymer electrolyte (GPE) with good ionic transport properties and mechanical stability is proposed. A ZrO 2 /KH570/PU/P123 layer was formed on the outer and inner pore surfaces of PE separator before in situ polymerization by a simple one-step dipping coating process. This coating layer changes the PE separator surface from hydrophobic to hydrophilic, and therefore facilitates the uniform spreading of the GPE precursor solution on the PE surface to enable the formation of highly uniform GPE. Moreover, it effectively compensates the negative effects of in situ gelatinization on the ionic transport behavior of the final PE-supported GPE. This GPE possesses excellent ion transport properties and mechanical stability, as well as improves the static and dynamic interfacial stability with lithium metal anode. When using metallic lithium and LiCoO 2 to assemble cells, this PE-supported GPE affords improved C-rate capability, cycling performance and effective dendrite inhibition. Graphic abstract
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 Zhejiang University-SCIENCE B
·
2021
·
IF 3.066
Zhiwei SU,Mingxing LI,Ling ZHANG,Chaoyang WANG,Leiqing ZHANG,Jingqiu XU,Baiping FU
Objective To coat a zirconia surface with silica-zirconia using a dip-coating technique and evaluate its effect on resin-zirconia shear bond strength (SBS). Methods A silica-zirconia suspension was prepared and used to coat a zirconia surface using a dip-coating technique. One hundred and eighty-nine zirconia disks were divided into three groups according to their different surface treatments (polishing, sandblasting, and silica-zirconia coating). Scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and X-ray diffraction (XRD) were used to analyze the differently treated zirconia surfaces. Different primer treatments (Monobond N, Z-PRIME Plus, and no primer) were also applied to the zirconia surfaces. Subsequently, 180 composite resin cylinders (Filtek Z350) were cemented onto the zirconia disks with resin cement (RelyX Ultimate). The SBS was measured after water storage for 24 h or 6 months. The data were analyzed by two-way analysis of variance (ANOVA). Results SEM and EDX showed that the silica-zirconia coating produced a porous layer with additional Si, and XRD showed that only tetragonal zirconia was on the silica-zirconia-coating surface. Compared with the control group, the resin-zirconia SBSs of the sandblasting group and silica-zirconia-coating group were significantly increased ( P <0.05). The silica-zirconia coating followed by the application of Monobond N produced the highest SBS ( P <0.05). Water aging significantly reduced the resin-zirconia SBS ( P <0.05). Conclusions Dip-coating with silica-zirconia might be a feasible way to improve resin-zirconia bonding.
研究领域:
牙科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
Green Energy & Environment
·
2020
·Vol. 7
·期 1
·53-65
·
IF 6.395
Hong-Li Ding,Hai-Tao Yu,Xiao-dong Wang,Chen-Feng Guo,Bing Zheng,Ying Xie,Ting-Feng Yi
SrLi 2 Ti 6 O 14 (SLTO) coated with different amount of ZrO 2 was successfully prepared. The as-obtained composites are stacked by a series of particles with a pure phase structure and a good crystallinity. Furthermore, ZrO 2 coating not only enhances the structural stability of the materials but also facilitates the diffusion of lithium through the SEI film. As a result, the redox polarization was reduced, and the reversibility of the electrochemical reaction was enhanced. Particularly, SLTO-ZrO 2 -2 sample delivers a high initial lithiation capacity of 283.6 mA h g −1 , and the values maintain at 251.7, 228.0, 207.4, 175.3, and 147.7 mA h g −1 at the current densities of 0.13, 0.26, 0.54, 1.31, and 2.62 A g −1 , respectively. Our experiment also confirmed that SLTO materials coated with ZrO 2 are suitable for high power density applications, and the lithiation specific energy efficiency of SLTO-ZrO 2 -2 is 200% as high as that of pure SLTO at a power density of 1257 W kg −1 .
研究领域:
材料科学
·
电化学
·
能源存储
·
无机非金属材料
·
固态离子学
✓ 已验证
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2019
·
IF 3.858
Zhihua Song,Shenghong Li,Yafeng Guan,Shuo Wang,Yinghao Wang,Gangqiang Yang,Xiaochen Zhang,Jinhua Li,Wenhao Song,Chuanming Zhou,Lingxin Chen
In this work, multilayer zirconia-coated silica (ZrO 2 /SiO 2 -n) microspheres were successfully produced by a straightforward hydrothermal procedure with a low concentration of Zr 4+ (5 mM) under low potential of hydrogen (pH) conditions (pH = =2). The obtained ZrO 2 /SiO 2 -n materials exhibited favorable characteristics for high-performance liquid chromatography (HPLC) separation, including high surface area and pore volume, good pore structure, narrow particle size, and pore size distribution. In addition, the zirconia coverage in the mesopores was confirmed by soaking the material in 1 M NaOH solution, with the particles showing strong resistance to the basic solution. The obtained ZrO 2 /SiO 2 -n stationary phases were packed into a fused-silica capillary tubing for the separation of alkaloids in hydrophilic interaction chromatography (HILIC) mode, and a column efficiency of 47,800 plates/m was obtained for berberine on a ZrO 2 /SiO 2 -6 micro column. The ZrO 2 /SiO 2 -6 microspheres were further modified by dodecylphosphonic acid (C 12 P-2-ZrO 2 /SiO 2 -6); the C 12 P-2-ZrO 2 /SiO 2 -6 material showed great potential for application in reversed-phase liquid chromatography (RPLC) mode. The C 12 P-2-ZrO 2 /SiO 2 -6 micro column showed a column efficiency of 55,000 plates/m for naphthalene and 51,300 plates/m for benzene.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Jing Shang,Feina Niu,Zhiwei Cai,Yindong Tan,Yaxing Zhang,Runan Tan,Hanping He,Yunbin He,Gang Chang
Surface-enhanced Raman scattering (SERS) technology is limited in the direct detection of molecules with weak Raman scattering such as methyl parathion (MP). Development of an indirect detection strategy for weakly Raman active substances is essential. Herein, a novel SERS detection method was developed for the inhibition-type indirect detection of MP with ZrO 2 -coated silver nanowires (AgNWs@ZrO 2 ) as substrate. The mechanism relies on specific MP adsorption through Zr 4+ Lewis acid sites and P/S-ZrO 2 interactions, which spatially and electronically suppresses 4-MBA probe signals, and then the quantitative relationship between the measured object and the decline value of Raman intensity can be established. With the gradual increase of MP concentration in the range of 0.5 ng/mL ∼ 1 μg/mL, the SERS intensity of 4-MBA decreased accordingly, showing a good linear relationship (R 2 = 0.996), and the analytical enhancement factor (AEF) reached 1.6 × 10 6 , overcoming traditional SERS limitations for the molecules with weak Raman scattering. The ZrO 2 layer maintains electromagnetic coupling while preventing oxidation, thereby enhancing the reproducibility, uniformity and stability of the substrate during the analysis process. The prepared AgNWs@ZrO 2 was successfully applied for trace detection of MP residues in pear peel and apple juice. This study is expected to provide a simple and feasible method for trace detection of the molecules with weak SERS activity.
研究领域:
分析化学
·
纳米技术
·
环境监测
·
食品安全
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2018
·
IF 0
Rong Chen,Kai Qu,Jiawei Li,Penghui Zhu,Chenlong Duan,Jing Zhang,Xiwen Li,Xiao Liu,Zhijian Yang
The stability of aluminum (Al) nanoparticles is a key issue that determines the energy performance of solid fuels, Al-based green propellants, and fuel cells. The surface native oxide shell (Al2O3), nevertheless, cannot stabilize Al nanoparticles under hot water conditions. Herein, we report a passivation method utilizing an ultrathin zirconia (ZrO2) coating via atomic layer deposition, where a sub-nanometer coating layer could completely prevent the reactions between Al nanoparticles and hot water (80 °C). The weight percentage of metallic Al for ultrathin ZrO2 coated Al nanoparticles can reach 82.2 wt %, which is close to that of original Al nanoparticles with Al2O3 native oxide (88 wt %). The metallic Al’s weight has been kept at 93.4% for the ultrathin ZrO2 coated Al nanoparticles compared to the original Al nanoparticles. As a comparison, the Al2O3 coated Al nanoparticles result in the oxidation failure in 60 °C water. The proposed passivation mechanism is attributed to ZrO2 coating’s structural stability and the enhanced hydrophobicity to water. The ultrathin ZrO2 passivation offers a valuable tool for enhancing the stability of Al nanoparticles and thereby enables their potential applications in energy field.
研究领域:
材料科学
·
纳米技术
·
能源材料
·
表面工程
·
无机化学
✓ 已验证
DOI
危险品化学品经营许可证（带存储）