Journal of Energy Storage
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2024
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IF 8.9
Chaohua Song,Zan Chen,Cuijia Duan,Claudia Li,Sibudjing Kawi,Yinhui Li
Current commercial polyolefin separators suffer from poor electrolyte affinity and thermal stability, which seriously affect the electrochemical performance and safety of lithium-ion batteries (LIBs). In this work, supramolecular self-assembly by π-π stacking interaction was utilized in combination with the self-polymerization of dopamine (DA) to achieve a homogeneous cladding of poly-dopamine (PDA) functional layer on the surface of boron nitride (BN) nanosheets. PDA-BN/poly ( m -phenylene isophalamide) (PMIA) composite separators for high-safety LIBs were synthesized using a non-solvent-induced phase separation process. The combination of PMIA and PDA-BN nanomaterials formed a hierarchical porous structure, which enhanced the porosity of PMIA separators. The excellent thermal conductivity of BN nanosheets enhanced the thermal conductivity of the PMIA separator, which facilitated the heat dissipation of the LIBs during the battery operation, and enhanced the cycling stability of the LIBs. The evidence of the results, which were assembled with PDA-BN/PMIA composite separator LiFePO 4 ||Li battery achieved a capacity retention of 95 % after 100 cycles at 0.5 C high-rate cycling. In addition, the PDA-BN/PMIA composite separator did not undergo significant thermal shrinkage at 250 °C, which provides better safety performance than commercial PP separators. The non-solvent-induced phase separation process is not only simple but also inexpensive, and the good electrochemical performance and excellent safety of the as-prepared PDA-BN/PMIA composite separators are expected to be applied in the high-power energy field.
研究领域:
材料科学
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能源技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2018
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IF 6.735
Tao Wang,Xinping He,Ye Li,Jiding Li
A novel aromatic poly ( m -phenylene isophthalamide) (PMIA) hollow fiber substrate was first introduced to poly(piperazine-amide) (PA) composite membrane for nanofiltration. Chemical composition, morphological structure and top surface property were comprehensively characterized. Analyses indicated that a negative charged polyamide selective layer was successfully synthesized on PMIA substrate via interfacial polymerization. For nanofiltration tests, the as-prepared PA/PMIA hollow fiber membrane exhibited not only a superior permeation (104.13 ± 0.70 L·m −2 ·h −1 , 0.6 MPa), but also an excellent salt rejection in the order as: R N a 2 S O 4 (98.45%) > R MgS O 4 (97.98%) > R CaC l 2 (96.02%) > R MgC l 2 (95.74%) > R NaCl (54.07%). Additionally, nanofiltration performance was evaluated with three kinds of anionic dyes (Chromotrope FB, Reactive Yellow 3, Direct Fast Blue B2RL) in varied conditions, including operating pressure, dye content, pH environment and salty co-exist. Evidence supported that an outstanding dye-removal ability was achieved using the developed PA/PMIA membrane, which was specifically higher than 97%. Integrate all the findings, this work provided a new PMIA based hollow fiber nanofiltration membrane, which should be promising in application of dye wastewater treatment.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2017
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IF 3.387
Shenshen Ouyang,Tao Wang,Longgang Zhong,Meiling Peng,Juming Yao,Sheng Wang
In this study, hierarchically feather-mimetic structures formed of poly(m-phenylene isophthalamide) (PMIA) nanofibres were prepared by electrospinning and subsequent crystallisation for superwettability applications. X-ray diffraction measurementsand scanning electron microscopy show that a feather-mimetic structure of crystallised nanoflakes was formed following a hydrothermal treatment process. The nanoflakes formed a nanosized fine texture on top of a coarser-textured membrane, which greatly improved the membrane roughness and yielded a hierarchical topography. After fluorination, the membrane exhibited superamphiphobicity, with surface contact angles of 151° and 136° for water and hexadecane, respectively. The method provides new insight for the design and development of functional bionic membranes based on PMIA.
研究领域:
材料科学
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纳米技术
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仿生学
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表面化学
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
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2023
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IF 4.5
Kefeng Huo,Jifan Zhang,Tao Lin,Yiyun Zhang,Yi Liu,Xunyong Liu
The pH test is particularly important in many fields, such as chemical production and medical diagnosis. However, the most commonly used pH test strips for pH detection have disadvantages such as low strength , poor stability, only qualitative measurement and only a single-color response. Therefore, a dual-mode pH sensor prepared by a phase conversion method with Poly(m-phenylene isophthalamide) (PMIA) as the substrate and carbon quantum dots (CQDs) as probes was developed. This sensor is capable of producing dual changes in fluorescence color and fluorescence intensity over the full range of pH. The -COOH and -NH 2 groups in CQDs can interact with the amide group in PMIA to make the sensor highly stable. Three correlations were established based on the fluorescence color and fluorescence intensity at different pH, which compensated the shortage of traditional pH test paper that could not be quantitatively detected. More importantly, the sensor can be used for pH detection in a wide range of water samples, and both colorimetric and fluorescence detection modes exhibit extremely high fit coefficients (R 2 > 0.99) and short response times (∼5 s). Therefore, the dual-mode pH sensor provides an important solution for the development of pH detection devices with high stability and accuracy.
研究领域:
化学传感
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材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Wentao Wang,Lin Zhang,Gaochong Zhao,Xupei Yang,Wenzheng Zhang,Yao Meng,Bingtao Tang,Liming Ding
Flexible photonic crystals (PCs) constructed by PCs and special polymers are very promising to achieve a combination of vivid structural colors, mechanical robustness, and environment stability. However, PCs that incorporate polymer binders are still susceptible to destruction and subsequent loss of structural color when subjected to significant external forces or harsh environments. Besides, because most of these polymers are highly flammable, crucial fire safety is difficult to be guaranteed in the application of these materials. In this study, we report a poly(m-phenyleneisophthalamide) inverse opal (PMIA IO) structural color film through a SiO2 PC template sacrificing method. Benefiting from the high rigid PMIA molecular structural configuration, the PMIA IO films are able to maintain their structural colors even in harsh conditions, such as large tensile stress, high and low temperatures, potent acids and bases, and ultraviolet radiation. More attractively, the PMIA IO films demonstrate excellent flame retardancy, with the limiting oxygen index (LOI) and flame retardant rating reaching 28 vol % and V0, respectively. We believe that the flexible structural color films with high strength, harsh environment stability, and flame retardancy, which are difficult for other structural color materials to possess simultaneously, have great potential for special applications in fire protection, national defense, aviation, marine, and aerospace fields.
研究领域:
材料科学
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光学
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高分子科学
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS & DESIGN
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2016
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IF 3.997
Shenshen Ouyang,Tao Wang,Xueying Jia,Yun Chen,Juming Yao,Sheng Wang
A durable and renewable superhydrophobic and superoleophilic poly(m-phenyleneisophthalamide)/silicon dioxide (PMIA/SiO2) membrane was prepared for oil/water separation in harsh conditions, the membrane have a self-indicating capacity when it is to become inoperable. Its nanoroot-shaped micro-nanostructure was achieved by covering each individual electrospun PMIA/SiO2 nanofiber with a dense silicone nanofilament layer to form a superhydrophobic surface, the water contact angle was more than 150°and the sliding angle was less than 1°. The porous nanofiber network served as a substrate to ensure the high absorption capacity of oils and oil/water separation efficiency, and increase the roughness for hydrophobicity . Its superhydrophobicity, high separation efficiency, and excellent stability and durability in oil/water separations under various extreme conditions, such as high temperature, acid/alkali solutions, and seawater for long periods can be preserved. This behavior is attributed to the robust micro-nanostructure, superior corrosion resistance , and excellent mechanical properties . Congo red in the PMIA substrate acts as a color indicator to indicate superhydrophobic surface failure, and the disabled material can be recovered absolutely by in-situ regrowth of silicone nanofilaments. This material is expected to become a highly effective renewable and sustainable material for oil-spill cleanup and recycle.
研究领域:
材料科学
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环境工程
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化学
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可持续性
✓ 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）