CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yang Haoyu,Zhang Xiaoqi,Ma Xintao,Liu Wentao,Liu Hao,Liu Xuying,He Suqin,Huang Miaoming,Xu Wanlin,Zhu Chengshen
Bio-based polyamide elastomers, known for their excellent mechanical properties, represent a promising environmentally friendly material with significant potential. In this study, we synthesized TPA510/6(short for polyamide 510/6 elastomer, the main components of which are 1.5-Pentanediamine, sebacic acid, caprolactam and polyetheramine), a polyamide elastomer with a high bio-based content, outstanding low-temperature resistance, and superior mechanical performance. Additionally, microcellular elastic foams with pore sizes below 10 nm were fabricated by foaming with supercritical carbon dioxide. These TPA510/6 foams demonstrated remarkable tensile strength, compressive strength, low-temperature resistance, and friction resistance. Furthermore, simulations of the thermal insulation properties of the foams under real-world conditions revealed low thermal conductivity, highlighting their excellent insulation performance. As a result, the bio-based polyamide elastomer foams developed in this study show significant promise for applications in areas such as building insulation, sports protection, and thermal camouflage.
研究领域:
材料科学
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高分子科学
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热工工程
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环境工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ChemSusChem
·
2021
·Vol. 14
·期 9
·2056-2066
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IF 8.928
Jijun Wang,Xuelin Li,Jianbo Yang,Weigang Sun,Qing Ban,Ligang Gai,Yingying Gong,Zhen Xu,Libin Liu
Graphical Don't get burned : By utilizing the active P−H bond of a flame retardant, an organic gel electrolyte is fabricated. The ion transport mechanism in the electrolyte is proposed. The electrolyte has good low-temperature tolerance, mechanical properties, and flame retardancy. The gel electrolyte-assembled supercapacitor can work normally in the temperature range of −20 to 60 °C. Traditional liquid electrolytes are volatile, flammable, and easy to leak, which makes the energy storage device easy to burn and explode in the case of overcharge and short circuit. Here, by utilizing the active P−H bond of a flame retardant (DOPO) to graft onto the polymer chain, flame-retardant organic gel electrolytes were fabricated to address these issues. The gel electrolyte had good ionic conductivity of 4 mS cm −1 at 20 °C and good flame retardant ability. By changing the molar ratio of the monomers and the salt concentrations, the mechanical strength of the gel electrolyte could be adjusted (maximum stress≈28 KPa, maximum strain≈305 %). The transport mechanism of lithium ions in the gel polymer electrolyte was proposed. The gel electrolyte-assembled supercapacitor (SC) possessed better electrochemical properties than that of SC assembled by liquid electrolyte. Importantly, the gel-based SC remained basically unchanged under multiple bending cycles. Additionally, the gel electrolyte had good low-temperature tolerance (0.1 mS cm −1 at −40 °C). The gel electrolyte-assembled SC could work normally in the temperature range of −20 to 60 °C. The multiple advantages of gel electrolyte expand the applications in ionic conductor and energy storage devices.
研究领域:
材料科学
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电化学
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能源存储
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产品关联
DOI
PubMed
高影响因子
Science Advances
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2023
·Vol. 9
·期 44
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IF 13.6
Tao Yu,Haoyu Li,Yuankai Liu,Jingchang Li,Jiaming Tian,Zhaoguo Liu,Yuan Rao,Shaohua Guo,Haoshen Zhou
All-solid-state batteries (ASSBs) represent a promising battery strategy to achieve high energy density with great safety. However, inadequate kinetic property and poor interfacial compatibility remain great challenges, which impede their practical application. A prototype of dual-ion conductor of Li+ synchronized with Cu+ unlocks a four-electron redox reaction with high reversibility and fast kinetics. As a result, the constructed ASSB exhibited a high reversible capacity of 603.0 mA·hour g−1 and an excellent cycling retention of 93.2% over 1500 cycles. Moreover, because of the ion highway connecting active materials and catholytes constructed by dual-ion conductor, remarkable temperature tolerance (−60°C) and excellent rate performance (231.6 mA·hour g−1 at 20 mA cm−2) were achieved. The superior electrochemical performance can be ascribed to the migration pathway with small energy barrier and low tortuosity once the Cu+ introduced into Li6PS5Cl. This work creates a unique perspective of ASSBs with dual-ion conducting strategy, thus inspiring a potential developing strategy of state-of-the-art ASSBs.
研究领域:
储能
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材料科学
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电化学
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固态化学
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电池技术
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DOI
高影响因子
POLYMER
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2024
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IF 4.1
Shengqiang Wang,Zhenbo Peng,Yanhua Huang,Mingquan Zhu,Yayun Liu,Yong Zhang
Phenyl-containing polysiloxanes have better thermal stability, low-temperature flexibility, and room-temperature damping performance than polydimethylsiloxanes. Poly [dimethylsiloxane- co -methyl (phenyl)siloxane] and poly (dimethylsiloxane- co -diphenylsiloxane) were synthesized through a bulk copolymerization of octamethylcyclotetrasiloxane and methylphenylcyclosiloxane mixture or octaphenylcyclotetrasiloxane, and the structure and properties of the copolysiloxanes were comparatively studied. The phenyl content in poly [dimethylsiloxane- co -methyl (phenyl)siloxane] can be as high as 50 mol%. With the increment of the phenyl content, the thermal stability of the copolysiloxanes is dramatically improved as evaluated by thermal gravimetric analysis. At a given phenyl content, poly [dimethylsiloxane- co -methyl (phenyl)siloxane] has higher thermal stability than poly (dimethylsiloxane- co -diphenylsiloxane). The former is more difficult to crystalline at low temperatures and has lower room temperature viscosity than the latter as confirmed by differential scanning calorimetry and rotational rheometer. The copolysiloxanes is mixed with hydrogen-containing polysiloxane and silica, and vulcanized at elevated temperature to get copolysiloxane composites with good damping properties, oil resistance, and low-temperature resistance. This study not only enriches the fundamental academic research on functional polysiloxanes, but also provides useful technical references for practical applications of phenyl silicone rubber.
研究领域:
高分子科学
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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
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