JOURNAL OF POWER SOURCES
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2024
·
IF 8.1
Wei Wang,Yingli Wu,Siqi Zhan,Di Rong,Yichun Lin,Longjiao Yu,Siqi Wang,Heming Zhao,Shiwei Wang,Mingyao Zhang
In recent years, the electrochemical study of solid electrolyte polymer films has been attracted more and more attentions due to their importance in electrochromic components. In this work, a solid polymer electrolyte (SPE) film based on the Polyvinyl butyral (PVB) has been successful constructed by hybrid process. Its conductivity at room temperature is 6.0 × 10 −4 S cm −1 , with an activation energy of 0.02 eV. The tensile strength at break reaches up to 43 MPa, while the shear strength is 3.8 MPa. Additionally, the impact energy is 3.1756 J. The corresponding electrochromic laminated glass (ELGs) with 10 × 10 cm 2 and 2 × 2 cm 2 are obtained through hot pressing process. These glasses exhibit electrochromic properties and safety performance. They can change colors within 4 s at voltages greater than 1 V, with an optical contrast ratio of (ΔT)≈64 %. Additionally, their high stability and good reversibility has been confirmed by 10,000 cycles of cyclic voltammetry (CV) testing. It provides a new possibility for the application of electrolyte films in electrochromic.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Qingyun He,Enrou Mei,Xiaojuan Liang,Weidong Xiang
Here, polyvinyl butyral (PVB) films-protected CsPbBr 3 /Cs 4 PbBr 6 halide perovskite solids (HPSs) were successfully synthesized. The optical properties and structure of HPSs@PVB were studied, finding the photoluminescence quantum yields (PLQYs) of this novel composite material is as high as 60.4%. More importantly, HPSs@PVB has excellent thermal cyclability, water and ultraviolet (UV) resistance. In addition, HPSs@PVB was further applied to light emitting diodes (LEDs) and displays. By combining green-emitting HPSs@PVB and red-emitting CsPbBrI 2 NCs@PVB with InGaN 460 nm blue chip, white light emitting diode (WLED) device can be successfully fabricated. And the device exhibits good stability and the color gamut is as wide as 126%, reaching 94% of Rec. 2020. This work proposes a simple approach to solve the challenging stability issue of perovskite nanocrystals (NCs), having a positive implication for their practical application in LEDs and display backlights.
研究领域:
材料科学
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光学工程
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显示技术
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN NUCLEAR ENERGY
·
2022
·
IF 2.461
Yifeng Wang,Xiaobo Li,Ruixian Liang,Huiping Zhu,Hao Wu,Fang Liu,Yang Liu,Fenglei Niu
The lead oxide (PbO) ceramics play an important role in the solid-phase oxygen control system of the lead-cooled fast reactor. But sintering process and properties of PbO ceramics are rarely studied. In this paper, the effects of PVB addition on the mechanical properties and microstructure of PbO ceramics are studied. PbO ceramic specimens added with x wt.% (the value of x is 0, 1, 2, 4 or 6) PVB solution, a kind of binder, are fabricated, debonded and sintered at 620 °C. The results reveal that compared with pure PbO ceramics, the addition of PVB solution improves the mechanical properties such as hardness, flexural strength, density, and the microstructure of PbO ceramics according to scanning electron microscopy images. The optimal relative density and flexural strength are found to be 90.16% and 26.33 MPa with 4 wt% PVB solution, respectively. And the optimum hardness of 1212.58 MPa is achieved with 2 wt% PVB solution. Lastly, the sintered PbO particles are placed in a pool-type LBE flowing set-up to check the integrity of the shape and change of microstructure. The results of flushing experiment show that most PbO ceramics with PVB solution can maintain the shape integrity in spite of the appearances of some internal cracks.
研究领域:
材料科学
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核能工程
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DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2020
·Vol. 126
·期 4
·1-10
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IF 1.81
Wu Guangfeng,Liu Chang,Lu Congcong,Zhang Huixuan
In order to protect the articles in buildings from ultraviolet radiation and save air-conditioning energy, polyvinyl butyral laminated glass are employed and produced in large quantities. Several inorganic particles with blocking effect have been doped into PVB, such as TiO 2 , ZnO, and ATO. T-ZnOw is a widely used functional structural material with excellent absorption properties. Herein, T-ZnOw was lipophilic modified with silane coupling agent KH-570, and T-ZnOw/PVB composite films were prepared via subsequent solution blending. As per the FTIR spectrum, a characteristic peak of Si–O–Zn at 1165 cm −1 was observed, indicating that T-ZnOw was successfully modified by KH-570. T-ZnOw before and after modification was separately mixed with the St/H 2 O mixed solution. The modified T-ZnOw could be dispersed in styrene instead of water, displaying a certain lipophilicity. On the other hand, from a microscopic perspective, the SEM images suggest that filling the filler in the form of a suspension can disperse the modified T-ZnOw in PVB in an independent four-needle form, which contributes toward improvement of the agglomeration of T-ZnOw in the PVB matrix. The UV–Vis–NIR spectrum shows that the addition of T-ZnOw reduced the UV transmittance of T-ZnOw/PVB composite films from 50.84 to 25.77%, resulting in a decrease in near-infrared transmittance from 82.14 to 43.22%. The ultraviolet and near-infrared light barrier properties of composite films were more than twice that of the ordinary PVB films. Moreover, the modified T-ZnOw endowed composite films with stronger ultraviolet light and near-infrared light-blocking properties, or better visible light transmittance. And the falling ball impact test proved that there was no clear relationship between the thickness of the film and the adhesion. This work proposes a new solution and preparation method for the production of energy-saving glass. Therefore, it is expected that using composite films instead of traditional PVB films to make laminated glass can greatly contribute toward energy conservation and environmental protection.
研究领域:
材料科学
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光学工程
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yuchao Chen,Pengtao Gao,Xinyu Si,Zehuan Cheng,Tonghu Xiao,Xing Yang
Currently limited research reported the design of microfiltration (MF) membranes specially for handling complex food processing streams such as rough beer. This study aimed to address this knowledge gap by tailoring for the first time a new class of polyvinylidene fluoride/poly(vinyl butyral) (PVDF/PVB) blend MF membrane with highly controllable pore structure and improved anti-fouling properties, and demonstrate its potential in real rough beer filtration. Combining an unconventional nonsolvent thermally induced phase separation (NTIPS) method and a unique quinary dope solution ( i.e. , PVDF/PVB/PVP/DMAc/MgCl 2 ) with lower critical solution temperature (LCST) feature, the roles of PVB content and coagulation temperature were investigated in terms of pore structure characteristics and hydrophilicity. Although both the control PVDF membrane M0 without PVB and M6 with optimal 6.0 % PVB achieved similar turbidity removal (98–100 %), M6 exhibited enhanced permeance ranging from 27 % to 12 % with increasing simulated feed complexity from containing dextran only, yeast only to yeast/dextran mixture. The contribution of fouling of these key beer components was analyzed, indicating that the co-existence of yeast and dextran significantly aggravated fouling. Combining with membrane autopsy, in real rough beer filtration M6 showed permeance of 26.7 L·m −2 ·h −1 ·bar −1 at 1 bar that was ∼70 % higher than M0. Although with ∼50 % less irreversible fouling than M0, water cleaning implemented on M6 only recovered 62.5 % of flux. The simultaneous investigations on alkaline cleaning and operating pressure found that: a reasonably low pressure seemed favorable, e.g., 63.6 L·m −2 ·h −1 ·bar −1 at 0.2 bar, achieving up to flux recovery of ∼91 % with only ∼10 % contributed by irreversible fouling. Overall this study offers a facile yet practical strategy to tailor membranes for beer filtration, serving as an inspiration for designing future membrane processes for treating complex food processing and industry waste streams.
研究领域:
食品科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2019
·Vol. 9
·期 1
·1-9
·
IF 4.011
Yang Yushan,He Haishan,Li Yougui,Qiu Jian
Robust, buoyant, superhydrophobic PVB/SiO 2 coatings were successfully formed on wood surface through a one-step solvothermal method and a nanoimprint lithography method. The as-prepared PVB/SiO 2 /wood specimens were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FT-IR), thermogravimetric/differential thermogravimetric (TG–DTG) analyses. The superhydrophobic property and abrasion resistance of rose-petal-like wood were measured and assessed by water contact angle (WCA) and sand abrasion tests. The results show that PVB/SiO 2 /wood not only exhibited a robust superhydrophobic performance with a WCA of 160° but also had excellent durability and thermostability during the sand abrasion tests and against corrosive liquids. Additionally, the as-prepared PVB/SiO 2 /wood specimens show high buoyancy.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL PHYSICS LETTERS
·
2020
·
IF 2.029
Wenbo Liu,Jiabin Zhou,Lidan Ding,Yuling Yang,Tianlei Zhang
The MIL-88/PVB nanofibers were prepared by hydrothermal synthesis and subsequent electrostatic spinning. The composite was used as a high efficiency heterogeneous catalyst for photocatalysis coupling of Fenton process to remove tetracycline hydrochloride (TC-HCl) under visible light irradiation. The results indicated that 99% of TC-HCl (500 mg·L −1 ) was degraded in 90 min. The MIL-88/PVB nanofibers were easy to separate from solution. The results of scavenging experiments and ESR analysis demonstrated that OH and O 2− were the predominant radicals for the TC-HCl degradation. Moreover, the possible mechanism for enhanced degradation performance of TC-HCl in the heterogeneous catalytic oxidation system was proposed.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2018
·
IF 3.927
Xiangyu Wang,Tao Wang,Jun Ma,Huiling Liu,Ping Ning
A novel composite based on hydrophilic boehmite-PVB/PVDF blended membrane- immobilized nanoscale zero-valent iron (nZVI) (BPPN) was synthesized. When the initial concentration of Cr(VI) was 20 mg/L, 100% Cr(VI) was removed by BPPN at an initial pH of 4.08 under room temperature of 25 °C within 90 min. In addition, the reactivity of the regenerated BPPN composites toward Cr(VI) removal were not obviously declined after 6 cycles. The resultant BPPN demonstrated high reactivity, preeminent stability and reusability in the reaction course. Meanwhile, the BPPN composites showed a higher removal efficiency toward the removal of Cr(VI) compared with alumina-PVB/PVDF-nZVI (APPN) composites. The plentiful hydroxyl groups of boehmit on the BPPN surface resulted in the enhancement in hydrophilicity and improved Fe 0 loading of the BPPN composites. For environmental parameters, results indicated that there was a negative effect of increasing the initial concentration or decreasing reaction temperature toward the removal of Cr(VI) by BPPN, and that the acidic and neutral conditions showed more favorable effect on Cr(VI) removal than the alkaline ones. The generated ferrous ions on the surface of BPPN were certified to play an important role in removal of Cr(VI). XPS analysis suggested that the reduction reaction of Cr(VI) occurred on the surface of the composite and produced precipitation of Cr(III). The Cr(VI) removal by BPPN composite was found to follow a revised kinetics well. This study suggests that the novel BPPN composite possessing excellent performance may be a promising functional material of heavy metal wastewater treatment.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
CORROSION SCIENCE
·
2018
·
IF 4.862
Liangliang Xiong,Jianhua Liu,Mei Yu,Songmei Li
A two-dimensional nanocomposite, salicylaldehyde@ZIF-8/GO (SZG), was synthesized by anchoring the ZIF-8 nanoparticles containing the inhibitor salicylaldehyde (SA) on GO nanosheets for corrosion protection of AA2024 aluminum alloy. Its stimuli-responsive release of SA under acid and Al 3+ cations conditions was proved by UV–vis. Electrochemical impedance spectroscopy demonstrated that SZG nanocomposites prominently improved the protection properties of PVB coating by enhanced passive and active protection compared with the controlled samples. The enhanced passive protection derived from the two-dimensional structure of SZG, while inhibitor SA acted the active protection. Quantum chemical calculation clearly clarified the release and inhibition mechanisms of SA.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
ORGANIC ELECTRONICS
·
2018
·
IF 3.68
Wenjing Wang,Shian Guan,Mei Li,Jianming Zheng,Chunye Xu
Hybrid quasi-solid polymer electrolytes (QSPEs) were obtained by adding modified polyethylene glycol (mPEG) prepolymer into porous polyvinyl butyral (PVB). The prepared QSPEs have good luminous clarity (transmittance >70% in the visible region), high ionic conductivity in the level of 10 −5 S cm −1 . On the other hand, bond stress of the QSPE reaches 0.57 fold increase with introduction of 12 wt % PVB, attributing to functional groups in PVB. Moreover, an electrochromic device (ECD) was fabricated using PProDOT-Me 2 and Li-Ti doped NiO as working and counter electrode respectively, and hybrid QSPE as electrolyte. Compared with ECD based on mPEG electrolyte, the ECD shows 43.81% of optical modulation (ΔT) at 585 nm, and maintains 84% of the initial ΔT value after 20,000 cycles. These outstanding comprehensive performances demonstrate the QSPE has extensive prospects for electrochromic applications.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2022
·
IF 4.598
Qi Zhang,Tao Wei,Jiahao Lu,Cheng Sun,Yanyan Zhou,Mengting Wang,Ye Liu,Beibei Xiao,Xiangyun Qiu,Shoudong Xu
All solid-state lithium-ion batteries (ASSLBs) are thought to benefit from using solid composite electrolytes (SCEs) to increase their energy density and safety. In this study, we firstly introduce the PVB additives to SCEs and prepared a SCE composed of a mixture of nanostructured MOFs (UiO-67), PVDF-HFP, PVB, and LiTFSI. Electrochemical characterizations of the SCEs (EIS, LSV, CV and battery test) were also conducted. The SCE UBP-2 (PVB:PVDF-HFP = 1:10) shows a high lithium-ion transference number (t Li + =0.72) and good ionic conductivity (3.27×10 −4 S cm −1 at 60 °C). A symmetric Li cell with SCE UBP-2 can be continuously cycled at 0.1 mA cm −2 for more than 2500 h without experiencing a short circuit. The full cell (LiFePO 4 /UBP-2/Li) also maintained a high reversible discharge capacity of 154.9 mAh g −1 at 0.1C after 200 cycles at 60 °C. At 3C, a capacity of around 100 mAh g −1 was also achieved. This work might help to enhance the development of the forthcoming all solid-state batteries.
研究领域:
材料科学
·
能源存储
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产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 33
·28038-28046
·
IF 3.289
Lina Chi,Jie Wang,Tianshu Chu,Yingjia Qian,Zhenjiang Yu,Deyi Wu,Zhenjia Zhang,Zheng Jiang,James O. Leckie
Mathematical models play an important role in performance prediction and optimization of ultrafiltration (UF) membranes fabricated via dry/wet phase inversion in an efficient and economical manner. In this study, a systematic approach, namely, a supervised, learning-based experimental data analytics framework, is developed to model and optimize the flux and rejection rate of poly(vinyl chloride) (PVC) and polyvinyl butyral (PVB) blend UF membranes. Four supervised learning (SL) approaches, namely, the multiple additive regression tree (MART), the neural network (NN), linear regression (LR), and the support vector machine (SVM), are employed in a rigorous fashion. The dependent variables representing membrane performance response with regard to independent variables representing fabrication conditions are systematically analyzed. By comparing the predicting indicators of the four SL methods, the NN model is found to be superior to the other SL models with training and testing R-squared values as high as 0.8897 and 0.6344, respectively, for the rejection rate, and 0.9175 and 0.8093, respectively, for the flux. The optimal combination of processing parameters and the most favorable flux and rejection rate for PVC/PVB ultrafiltration membranes are further predicted by the NN model and verified by experiments. We hope the approach is able to shed light on how to systematically analyze multi-objective optimization issues for fabrication conditions to obtain the desired ultrafiltration membrane performance based on complex experimental data characteristics.
研究领域:
材料科学
·
化学工程
·
机器学习
·
膜技术
✓ 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）