JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Hu Wang,Jiangchao Chen,Pengfei Pang,Yiran Bai,Zhiqiang Zheng,Tao Huang,Kunpeng Jiang,Yunyun Zhao,Guisheng Zhu,Huarui Xu
The development of lithium-metal batteries (LMBs) with high energy density and safety is considered a top priority for the next generation of rechargeable batteries. However, the mitigation of the inevitable reaction between lithium and the liquid electrolyte (LE), as well as the subsequent formation of Li dendrites, poses a crucial challenge that needs to be addressed. Upgrading traditional LEs serves as a pivotal strategy in achieving this objective. Here, we report a ZIF-8@SiO 2 /PVDF-HFP (ZSPH) quasi-solid electrolyte (QSE) with ultra-multistage pore crosslinked network structure. The interconnected micro-stage pore structure in a honeycomb-like morphology of polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) and the rich multistage pore structure of nanoscale SiO 2 “armored” zeolite imidazolium ester backbone-8 (ZIF-8@SiO 2 ) collectively establish a multi-stage ion transport channel. This unique structure facilitates appreciable ionic conductivity (2.21 × 10 −3 S cm −1 at 30 °C) and provides a wide and stable electrochemical window (approximately 5.0 V). The Li/ZSPH9-LiPF 6 /Li quasi-solid-state cell demonstrates an impressive longevity of over 1800 h at a current density of 0.2 mA cm −2 . The high compatibility of the interface between electrode and ZSPH QSE and effective inhibition of Li dendrites growth create synergistic effects, which make it possible to realize high energy density and safe LMBs.
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
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Cuiqing Wu,Qi Liu,Rongrong Chen,Jingyuan Liu,Hongsen Zhang,Rumin Li,Kazunobu Takahashi,Peili Liu,Jun Wang
Superhydrophobic coatings are highly promising for protecting material surfaces and for wide applications. In this study, superhydrophobic composites, comprising a rhombic-dodecahedral zeolitic imidazolate framework (ZIF-8@SiO2), have been manufactured onto AZ31 magnesium alloy via chemical etching and dip-coating methods to enhance stability and corrosion resistance. Herein, we report on a simple strategy to modify hydrophobic hexadecyltrimethoxysilan (HDTMS) on ZIF-8@SiO2 to significantly improve the property of repelling water. We show that various liquids can be stable on its surface and maintain a contact angle higher than 150°. The morphologies and chemical composition were characterized by means of scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FI-IR). In addition, the anticorrosion and antiattrition properties of the film were assessed by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization and HT, respectively. Such a coating shows promising potential as a material for large-scale fabrication.
研究领域:
材料科学
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化学工程
·
腐蚀与防护
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Xiaohan Meng,Ze Lv,Liyin Shi,Tianzhen Jiang,Shaoyang Sun,Yan Li,Jianguo Feng
Residues of pyrethroid pesticides in aquatic environments seriously threaten aquatic organisms and the human health. Herein, a novel highly dispersed and recyclable composite ZIF-8 and SiO2 double-layer-modified Fe3O4 nanoparticle, named Fe3O4@ZIF-8@SiO2 nanoparticle, was synthesized via a layer-by-layer assembly method to remove pyrethroid insecticides (namely, fenvalerate, β-cyfluthrin, and tetramethrin) from water. The physical properties of the Fe3O4@ZIF-8@SiO2 nanoparticles were characterized via scanning electron microscopy, elemental mapping, energy-dispersive X-ray spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, inductively coupled plasma spectroscopy, thermogravimetric analysis, Brunauer–Emmett–Teller surface area analysis, dispersion analysis, and vibrating sample magnetometry. The prepared Fe3O4@ZIF-8@SiO2 nanoparticles exhibited excellent adsorption performance and high dispersibility and could be rapidly separated from water using an external magnetic field. The Fe3O4@ZIF-8@SiO2 nanoparticles exhibited the strongest adsorption effect at an adsorbent dosage of 10 mg, an adsorption time of 40 min, and a pH of 7. The fitted model for the adsorption process was consistent with the proposed secondary kinetic model and Sips isotherm model. The Fe3O4@ZIF-8@SiO2 nanoparticles exhibited maximum adsorption capacities of 316.23, 364.43, and 258.69 mg g–1 for fenvalerate, β-cyfluthrin, and tetramethrin, respectively. The Fe3O4@ZIF-8@SiO2 nanoparticles retained most of their adsorption capacity after five reuse cycles when acetone was used as an eluent for desorption. The mechanisms involved in the adsorption process included π–π stacking interactions, hydrogen bonds, hydrophobic interactions, and pore filling effects. This study provides a potential design for rapidly recoverable and reusable nanoparticles that can be used to effectively adsorb pyrethroid insecticides in wastewater.
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
JOURNAL OF MEMBRANE SCIENCE
·
2019
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IF 7.015
Qiuyun Zhu,Xi Tang,Shasha Feng,Zhaoxiang Zhong,Jianfeng Yao,Zhong Yao
Severe air pollution causing by particulate matter and VOCs calls for multifunctional air purification media. Here, we report a novel bioinspired bead-on-string-like ZIF-8@SiO 2 composite nanofiber membrane, which has a synergistic promoting effect on particulate matter (PM) capture and gas pollutants adsorption. The flexible SiO 2 nanofiber membrane was fabricated by electrospinning, while zeolitic imidazolate framework-8 (ZIF-8) nanocrystals were grown on the nanofibers by controlling the crystallization by contra-diffusion. The resultant ZIF-8@SiO 2 composite membrane showed high removal efficiency of 99.96% for incense smoke which attributed to the ZIF-8 enhanced surface area and electrostatic interaction between beaded ZIF-8 nanocrystals and PM particles. Further, the uniformly loaded ZIF-8 nanocrystals with compatible pore size, large microporosity and specific surface area enhanced the formaldehyde adsorption efficiency to 79.53% in 2 h. The design of the ZIF-8@SiO 2 composite membrane with fascinating PM removal efficiency and excellent formaldehyde adsorption capacity would make it a promising medium for multicomponent air purification.
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
CHEMISTRY-A EUROPEAN JOURNAL
·
2013
·Vol. 19
·期 40
·13484-13491
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IF 5.831
Yan-Yan Fu,Cheng-Xiong Yang,Xiu-Ping Yan
The unique features of high porosity, shape selectivity, and multiple active sites make metal–organic frameworks (MOFs) promising as novel stationary phases for high-performance liquid chromatography (HPLC). However, the wide particle size distribution and irregular shape of conventional MOFs lead to lower column efficiency of such MOF-packed columns. Herein, the fabrication of monodisperse MOF@SiO 2 core–shell microspheres as the stationary phase for HPLC to overcome the above-mentioned problems is reported. Zeolitic imidazolate framework 8 (ZIF-8) was used as an example of MOFs due to its permanent porosity, uniform pore size, and exceptional chemical stability. Unique carboxyl-modified silica spheres were used as the support to grow the ZIF-8 shell. The fabricated monodisperse ZIF-8@SiO 2 packed columns (5 cm long × 4.6 mm i.d.) show high column efficiency (23 000 plates m −1 for bisphenol A) for the HPLC separation of endocrine-disrupting chemicals (bisphenol A, β-estradiol, and p -( tert -octyl)phenol) and pesticides (thiamethoxam, hexaflumuron, chlorantraniliprole, and pymetrozine) within 7 min with good relative standard deviations for 11 replicate separations of the analytes (0.01–0.39, 0.65–1.7, 0.70–1.3, and 0.17–0.91 % for retention time, peak area, peak height, and half peak width, respectively). The ZIF-8@SiO 2 microspheres combine the advantages of the good column packing properties of the uniform monodisperse silica microspheres and the separation ability of the ZIF-8 crystals. Graphical Core strength : Monodisperse ZIF-8@SiO 2 (ZIF-8=zeolitic imidazolate framework 8) core–shell microspheres have been fabricated through controllable growth of a ZIF-8 shell on spherical carboxylate-terminated SiO 2 cores (see figure). The metal–organic framework material is suitable as a stationary phase for fast and highly efficient HPLC separation.
研究领域:
分析化学
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材料科学
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色谱学
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金属有机框架材料（MOFs）
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DOI
高影响因子
FIBERS AND POLYMERS
·
2024
·Vol. 25
·期 7
·2647-2659
·
IF 2.2
Zhou Jianhua,Li Sitong,Niu Zhuanli
Combining phase change materials with textile materials is an important method to give textiles temperature regulation function. Herein, the microcapsulated phase change materials with ZnO@ZIF-8@SiO 2 -doped polymethyl methacrylate (PMMA) as hybrid shell (ZZS/PMMA MPCMs) were prepared through Pickering emulsion polymerization with n-octadecane (C18) as core and ZnO@ZIF-8@SiO 2 grafted with polyacrylic acid (MZZS) particles possessing radiation cooling performance as stabilizers. The effect of MZZS content on the morphology of phase change microcapsule, radiation cooling and temperature regulation properties of coated cotton fabrics was studied. The results indicated that when the MZZS content increased to 3.0 wt%, the prepared phase change microcapsule’s encapsulation efficiency was 50.34%, showing excellent latent heat storage and release properties. Furthermore, compared with the uncoated cotton fabric, the rising and dropping rate of the temperature of ZZS/PMMA MPCMs coated cotton fabric was much slower in different seasons, indicating excellent radiation cooling and temperature regulation performance.
研究领域:
材料科学
·
纺织工程
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2026
·
IF 9.8
Hu Wang,Shala Yang,Pengfei Pang,Jiangchao Chen,Yongbo Yan,Mingjie Liao,Dazhi Pang,Zheqi Zhang,Yunyun Zhao,Wenping Liu,Huarui Xu,Guisheng Zhu,Kunpeng Jiang
Poor interfacial stability and dendrite penetration at the lithium metal anode interface are critical bottlenecks hindering the practical application of garnet-type solid electrolytes, despite their high intrinsic ionic conductivity. Herein, we resolve this long-standing trade-off by designing a hierarchical sandwich heterostructure. This architecture comprises a dense Li 6.4 Ga 0.2 La 3 Zr 2 O 12 (C-LGLZO) ceramic scaffold sandwiched between two ZIF-8@SiO 2 /PVDF-HFP (ZSPH) composite interfacial layers. The resulting composite solid electrolyte (CSE) C-LGLZO/ZSPH exhibits exceptional electrochemical properties: a high Li + transference number (t Li+ = 0.77) and an outstanding ionic conductivity of 1.31 × 10 −3 S cm −1 at 30 °C. Mechanistically, while the robust central C-LGLZO scaffold provides a continuous Li + pathway and physically blocks dendrites, the honeycomb-like porous ZSPH interfacial layers homogenize the interfacial electric field and promote a stable solid electrolyte interphase (SEI). This synergistic design endows the CSE with a wide electrochemical stability window (4.8 V vs. Li/Li + ) and enables stable Li plating/stripping for over 1000 h. Furthermore, cells using a LiFePO 4 cathode retain 76.3 % of their capacity after 500 cycles at 0.5C, demonstrating exceptional high-rate cycling stability. This work offers a versatile architectural strategy for engineering robust solid-state batteries (SSBs).
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）