ACS Applied Materials & Interfaces
·
2026
·
IF 8.2
Sa Xue,Xiangyang Liu,Yongqi Liu,Maogang He
The construction of stable electrode/electrolyte interphases (EEIs) is crucial for the development of practical lithium metal batteries (LMBs). In this work, we designed locally concentrated ionic liquid electrolytes (signed as FPB2) based on 1,3,5-trifluorobenzene (3FB) diluent to address this challenge. The appropriate addition of 3FB encourages Li+ association with anions, creating a significant amount of anion-dominated aggregate-II solvation structure, which enables profound anion decomposition and rapid Li+ transport. In parallel, the low lowest unoccupied molecular orbital of 3FB allows for its own reductive decomposition on the lithium metal anode (LMA) surface. Benefiting from the synergistic decomposition of anions and 3FB, a uniform and stable solid electrolyte interphase (SEI) is formed on the LMA. Additionally, a thin cathode electrolyte interphase (CEI) abundant in LiF is generated on the LiFePO4 (LFP) cathode, resulting in the effective suppression of electrolyte oxidation. This dual-interphase stabilization endows impressive cycling performance in a Li/LFP full battery under demanding conditions (10.8 mg·cm–2 LFP, 50 μm Li) to achieve 81.5% capacity retention and 99.4% average Coulombic efficiency over 200 cycles. This work presents a new paradigm for electrolyte design in high-performance LMBs by exploiting a functional diluent to proactively stabilize dual EEIs.
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高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2023
·Vol. 63
·期 2
·489-498
·
IF 3.2
Wenting Xu,Qianqian Gu,Fanghua Zhu,Qiang Chen,Yiyang Liu,Jie Li,Meifang Liu,Yong Yi
Polymer microspheres can be used as fuel containers for laser inertial confinement fusion (ICF) due to their low atomic number, low density, and high thermal stability. The thin-walled polymer microspheres are prone to cracking due to an increase in the diameter to thickness ratio (diameter/wall thickness). The effect of polystyrene (PS) and Poly (α-methyl styrene) (PAMS) materials commonly used in ICF experiments on the quality of thin-walled microspheres is investigated. PS hollow microspheres show better sphericity, smoother surface, and lower cracking rate than PAMS microspheres. Moreover, the heat treatment of solidified PS microspheres can improve the strength so that the cracking rate of the microspheres decreases. The relative mechanism of how the molecular structure affect the quality is also discussed. This study provides some guidance for the preparation of thin-walled polymer microspheres with high quality for ICF experiments.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Shiying Wu,Huaqing Zhang,Zhu Mao,Yaohui Liang,Jian-An Li,Pengtao Hu,Qingqing Zhang,Cong Liu,Suilian Luo,Yuhai Wang,Guang Shi,Bingjia Xu
Developing polymer-based organic afterglow materials with switchable ultralong organic phosphorescence (UOP) that are insensitive to moisture remains challenging. Herein, two organic luminogens, BBCC and BBCS, were synthesized by attaching 7H-benzo[c]carbazole (BBC) to benzophenone and diphenyl sulfone. These two emitters were employed as guest molecules and doped into epoxy polymers (EPs), which were constructed by in situ polymerization to achieve polymer materials BBCC-EP and BBCS-EP. It was found that BBCC-EP and BBCS-EP films exhibited significant photoactivated UOP properties. After light irradiation, they could produce a conspicuous organic afterglow with phosphorescence quantum yields and lifetimes up to 5.35% and 1.91 s, respectively. Meanwhile, BBCS-EP also presented photochromic characteristics. Upon thermal annealing, the UOP could be turned off, and the polymer films recovered to their pristine state, showing switchable organic afterglow. In addition, BBCC-EP and BBCS-EP displayed excellent water resistance and still produced obvious UOP after soaking in water for 4 weeks. Inspired by the unique photoactivated UOP and photochromic properties, BBCC and BBCS in the mixtures of diglycidyl ether of bisphenol A (DGEBA) and 1,3-propanediamine were employed as security inks for light-controlled multilevel anticounterfeiting. This work may provide helpful guidance for developing photostimuli-responsive polymer-based organic afterglow materials, especially those with stable UOP under ambient conditions.
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CHEMOSPHERE
·
2022
·
IF 8.943
Yuqi Zhou,Hanqing Lv,Jin Lin,Tianyu Lv,Nan Wang,Heqing Tang,Lihua Zhu
This work reports a mechanochemical (MC) method for complete defluorination of perfluorooctanoic acid (PFOA) by using Al and Al 2 O 3 as milling agents. Both the Al/Al 2 O 3 molar ratio ( n Al / n Al 2 O 3 ) and the pre-thermal treatment of Al 2 O 3 strongly influenced the defluorination of PFOA. When commercial γ -Al 2 O 3 was pre-treated at 1200 °C, the use of Al and heat-treated γ -Al 2 O 3 with n Al / n Al 2 O 3 of 1: 1 led to PFOA defluorination of 100% after ball milling for 26 min at 350 rpm, being much higher than those (8.3%–58.1%) for using singlet milling agents or binary milling agents containing γ -Al 2 O 3 pre-heated at temperatures lower than 700 °C. It was clarified that the carboxylate-mediated adsorption of PFOA on Al 2 O 3 was essential for the MC decarboxylation as a degradation initiation step, and the in-situ generated electron on milled Al consequently caused the reductive dissociation of C–F bonds in the decarboxylation intermediate. A larger n Al / n Al 2 O 3 increased the in-situ electron generation rate ( r e ), and a higher heat-treatment temperature decreased OH − /H 2 O adsorbed on Al 2 O 3 to low the PFOA decarboxylation rate ( r dec ). The r e / r dec ratio determined defluorination pathways, and the percentage of the defluorination of PFOA in its total degradation including the generation of any degradation intermediates increased linearly with increasing r e / r dec .
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COMPOSITES SCIENCE AND TECHNOLOGY
·
2022
·
IF 9.879
Shengdao Wang,Shuwen Zhang,Yanchao Yang,Zhongxin Dong,Guibin Wang
Electrochemical grafting of diazonium salts have been applied to improve interfacial properties of carbon fiber and matrix resin . However, these graft modifications are still limited to general-purpose carbon fiber reinforced resin matrix composites such as epoxy. In this research, the direct grafting of Poly (aryl ether ketone) (PAEK) macromolecule on carbon fiber was achieved with mild condition. Firstly, aniline was introduced into Poly (ether ether ketone) (PEEK) as pendent group to improve solubility and amino terminated group was introduced as precursor of diazonium salt. Then the graft was conduct through diazonium salt reduction. After modification, the aniline side group could be hydrolyzed off to recover crystallinity . To further analyze the graft, single molecular-force spectroscopy was introduced to investigate the surface of carbon fiber. Impressively, the extension curve suggested the PAEK macromolecule had been attached to surface through strong interaction. Combined this with XPS data, it was believed that the graft was a success. As a result, the grafted polymer along with the polymer that physically absorbed on carbon fiber in electrolyte can cooperate to strengthen the interface. The interfacial shear strength of the grafted carbon fiber and PEEK increased from 42.27 MPa to 97.33 MPa by 130.26%. The improvement mainly originated from the covalent bonding that connected the carbon fiber and the graft coating layer as well as the great compatibility between the graft coating layer and the matrix resin. These results also demonstrated the possibility to graft high performance polymers on carbon fiber through one-step modifications.
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Frontiers in Immunology
·
2023
·
IF 7.3
Han Xiangning,Lin Hong,Chen Xiangfeng,Wang Luefeng,Zhang Ziang,Wei Xiaojing,Sun Xun,Xie Hanyi,Pavase Tushar Ramesh,Cao Limin,Sui Jianxin
For a long time, people have suffered from uncertainty, complexity, and a low success rate in generating and screening antibodies against small molecules, which have become the core bottlenecks of immunochemistry. Here, the influence of antigen preparation on antibody generation was investigated at both molecular and submolecular levels. Neoepitopes (amide-containing neoepitopes) formed in the preparation of complete antigens are one of the most important factors limiting the efficiency of generating hapten-specific antibodies, which was verified by different haptens, carrier proteins, and conjugation conditions. Amide-containing neoepitopes present electron-dense structural components on the surface of prepared complete antigens and, therefore, induce the generation of the corresponding antibody with much higher efficiency than target hapten. Crosslinkers should be carefully selected and not overdosed. According to these results, some misconceptions in the conventional anti-hapten antibody production were clarified and corrected. By controlling the content of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) during the synthesis of immunogen to limit the formation of amide-containing neoepitopes, the efficiency of hapten-specific antibody generation could be significantly improved, which verified the correctness of the conclusion and provided an efficient strategy for antibody preparation. The result of the work is of scientific significance in the preparation of high-quality antibodies against small molecules.
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POLYMER DEGRADATION AND STABILITY
·
2021
·
IF 5.03
Rui Zhang,Feng Bao,Zhi-Huan Weng,Li-Shuai Zong,Jin-Yan Wang,Xi-Gao Jian
To reduce the dependence on non-renewable resources and to address environmental issues, bio-based high-performance poly(aryl ether ketone), PGFEKK, is prepared using two bio-based monomers derived from guaiacol and 2,5-furandicarboxylic acid. With a biomass content of 64.9%, it is the highest biomass content for poly(aryl ether ketone)s reported to date. In this report, the reaction of the bio-based monomers 6-(4-hydroxy-3-methoxyphenyl) pyridazin-3(2H)-one (GSPZ) and furan-2,5-diylbis((4-fluorophenyl)methanone) (BFBF) is carried out via base-catalyzed nucleophilic substitution. The optimum conditions for the reaction are studied using orthogonal experiments and PGFEKK is obtained with a molecular weight up to 21.5 kg/mol, a glass transition temperature of 212 °C, a 10% weight loss temperature of 452 °C, and a tensile strength of 84 MPa. In addition, PGFEKK has a melt viscosity of only 207 MPa at 329 °C and dissolves in most solvents at room temperature. Such a high-performance bio-based poly(aryl ether ketone) has never been reported before. Furthermore, to study the mechanism of how two bio-based monomers affected the polymerization process and material properties, three other polymers are prepared using two petroleum-based monomers, DHPZ and BFBB, instead of GSPZ and BFBF, by analyzing the molecular simulations and the properties of the materials.
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Matter and Radiation at Extremes
·
2021
·Vol. 6
·期 2
·
IF 2.845
Liu Meifang,Ai Xing,Liu Yiyang,Chen Qiang,Zhang Shuai,He Zhibing,Huang Yawen,Yin Qiang
Deuterated polymer microspheres can be used as a neutron source in conjunction with lasers because thermonuclear fusion neutrons can be produced efficiently by collisions of the resulting energetic deuterium ions. A new type of solid deuterated polymer microsphere with a carbon hydrogen–carbon deuterium (CH-CD) multilayer has been designed for preparing the target for inertial confinement fusion (ICF) experiments. To fabricate these solid CH-CD multilayer microspheres, CH beads are first fabricated by a microfluidic technique, and the CD coating layer is prepared by a plasma polymerization method. Both polystyrene (PS) and poly( α -methylstyrene) (PAMS) are used as the material sources for the CH beads. The effects of the PS and PAMS materials on the quality of the solid CH beads and the resulting CH-CD multilayer polymer microspheres are investigated. The solid PS beads have better sphericity and a smoother surface, but large vacuoles are observed in solid PS-CD multilayer microspheres owing to the presence of residual fluorobenzene in the beads and a glass transition temperature of the solid PS beads that is lower than the temperature of plasma polymerization. Therefore, solid PAMS beads are more suitable as a mandrel for fabricating solid CH-CD multilayer polymer microspheres. Solid CH-CD multilayer microspheres with specified size have been successfully prepared by controlling the droplet size and the CD deposition rate and deposition time. Compared with the design value, the diameter deviation of the inner CH beads and the thickness deviation of the CD layer can be controlled within 20 µ m and 2 µ m, respectively. Thus, an approach has been developed to fabricate solid CH-CD multilayer microspheres that meet the physical design requirements for ICF.
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JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Tiantian Chen,Zhenyang Yu,Ting Xu,Rong Xiao,Wenhai Chu,Daqiang Yin
Sulfate radical (SO 4 ·- )-based advanced oxidation processes (AOPs) attract increasing attention in the control of micropollutants. However, SO 4 ·- can react with other chemicals present in water and result in undesired oxidation by-products (OBPs) generation. The formation and degradation mechanisms of CX 3 R-type OBPs during cobalt catalyzed peroxymonosulfate (Co 2+ /PMS) oxidation were investigated. In the formation of CX 3 R-type OBPs, both Co 3+ and SO 4 ·- could convert chloride to free chlorine that then reacted with natural organic matter, leading to the formation of CX 3 R-type OBPs. The concentrations of trichloromethane, chloral hydrate, dichloroacetonitrile, dichloroacetamide and trichloroacetamide after 15 min reaction were 9.8, 3.9, 1.2, 5.9 and 22.3 nM, respectively. Compared to SO 4 ·- , Co 3+ played a more significant role in the CX 3 R-type OBP formation and calculated toxicity values of CX 3 R-type OBPs. CX 3 R-type OBPs could not only be formed but also be degraded at the same time during Co 2+ /PMS oxidation. As for the degradation of CX 3 R-type OBPs, both Co 3+ and SO 4 ·- could transform CX 3 R-type OBPs to chloride. Compared to Co 3+ , SO 4 ·- played a more important role in the degradation of CX 3 R-type OBPs and the conversion from chloride to final by-product chlorate. The adverse effects that results from Co 3+ need more attention in SO 4 ·- -based AOPs application.
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POLYMER
·
2020
·
IF 4.231
Yuan Zu,Fengfeng Zhang,Dandan Chen,Lishuai Zong,Jinyan Wang,Xigao Jian
Wave-transparent composites with resin matrix are urgently required for the aerospace industry because of lightweight and facile formation. Many thermosetting resins could serve as the matrix of wave-transparent composites, however, some of them are suffering from harsh synthetic conditions, low service temperature (lower than 400 °C), and unstable dielectric properties at high temperature. Herein, branched phthalonitrile resins matrix based on 1,3,5‐tris(4‐fluorobenzoyl)benzene with excellent solubility was prepared by a facile polycondensation procedure. The 5% weight loss temperature of the cured network was as high as 553 °C. Besides, the quartz fiber reinforced composite simultaneously exhibited superior service temperature (over 500 °C) and stable dielectric properties over a broad temperature range from 25 °C to 500 °C. These results would strongly suggest such phthalonitrile resins as excellent wave-transparent composite matrix in those high-tech applications such as aerospace electronics and devices.
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JOURNAL OF NUCLEAR MATERIALS
·
2020
·
IF 2.485
Meifang Liu,Yueqing Zheng,Qiang Chen,Yuguang Wang,Yiyang Liu,Jing Li,Jie Li,Yawen Huang,Qiang Yin
Deuterated polymer beads with specifications on their size and structure are needed for preparing the targets in the inertial confined fusion experiments. Driven by the need to fabricate these beads meeting physical design, the coflow microfluidic device composed of glass round capillaries were fabricated. The formation mechanism of the droplets of the polymer solution (O droplets), the vacuole formation in the polymer beads and the size relationship between the O droplets and the resulting polymer beads were also investigated. The diameter of the O droplets can be controlled by designing microfluidic device with appropriate capillaries and tuning the flow rate of the polymer solution and aqueous solution. Residual solvent in polymer beads was reduced by optimizing the solidifying and drying process, leading to the decrease of the vacuoles. The size relationship between the initial O droplets and the resulting beads was revealed and confirmed. Consequently, monodisperse polymer beads such as ∼480 μm and ∼700 μm poly (α-methylstyrene), ∼700 μm polystyrene and ∼800 μm deuterated polystyrene beads meeting physical design were successfully prepared, which can be used to prepare the target in the inertial confined fusion experiments. It demonstrated the technical feasibility of controlling the bead size, providing a promising approach to fabricate the polymer beads meeting size requirement.
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JOURNAL OF CHROMATOGRAPHY A
·
2020
·
IF 4.049
Zhentao Li,Zhenkun Mao,Changjun Hu,Qiaoyan Li,Zilin Chen
Fluorous affinity means remarkably specific interaction between highly organic fluorides. This work aims to explore the potential of fluoro-functionalized stationary phase for the separation of organic fluorides by means of fluorous-fluorous interaction. Here, by using the Michael addition strategy between 1H,1H,2H,2H-perfluorodecanethiol (PFDT) and polydopamine (PD), a novel fluoro-functionalized stationary phase was synthesized for open-tubular capillary electrochromatography (OT-CEC). The PFDT@PD was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray Photoelectron Spectrometer (XPS). The PFDT@PD@capillary exhibited outstanding separation performance towards neutral compounds (such as alkylbenzenes and chlorobenzenes) and organic fluorides (such as fluorobenzenes and perfluoroalkyl methacrylates etc.) with high resolution and high separation efficiency by hydrophobic interaction and fluorous-fluorous interaction. In addition, the column shows good stability and reproducibility. The relative standard deviations (RSDs) of the retention time for intra-day (n = 5) and inter-day (n = 3) runs and between columns (n = 3) are less than 0.39%, 1.22% and 3.87%, respectively. This novel type of fluoro-functionalized stationary phase represents a great application potential in organic fluorides separation field.
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