Surfaces and Interfaces
·
2022
·
IF 6.137
Jinyun Xu,Hongjie Wang,He Wang,Yamin Liu,Wenyu Wang,Xin Jin,Changfa Xiao
Textile/polypyrrole (PPy) composite electrode fabricated by chemical polymerization satisfied flexible, mechanically robust, and easy large-scale preparation. Although there has been recent process towards high performance textile/PPy electrode, the realization of high-performance electrode has focused mainly on high mass loading of PPy, combing with metal oxide , or by electrochemical polymerization method. Here, an alternative design idea for chemical polymerization method based on improving efficiency utilization of PPy from hydrogen bond strategy is presented, in which three different strength of hydrogen bonded textile/PPy electrodes with the same amount of PPy are prepared. The systematic studies have shown that highly efficiency utilization of PPy is associated with the hydrogen bond strategy, in which combination of ordered arrangement of PPy chain, crosslinked and porous PPy nanostructure , and interfacial hydrogen bond integrated feature. This unique structure of PPy serves to decrease the interfacial resistance and increase the efficiency of ion and electron transferring, thus leading to specific capacitance increases from 230 to 417 mF cm −2 (scan rate of 20 mV s −1 ), energy density of its aqueous devices improved from 9.8 to 16.9 Wh kg −1 (power density of 100 W kg −1 ), and cycling durability increase from 74% to 96% after 4000 charge/discharge cycles associated with interfacial hydrogen bonds.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Chuanyong Yan,Chunyin Lu,Shikun Wen,Mingbo Yang,Mingjun Bai,Siqi Chen
Hydrogels are widely used across various fields, creating a demand for materials capable of withstanding freezing conditions. Most existing antifreezing hydrogels rely on small-molecule additives or are organogels, which frequently encounter environmental concerns due to potential toxicity and exhibit poor long-term stability in harsh conditions. In this study, we propose a hybridized hydrogen bonding strategy to develop antifreezing hydrogels without the need for small-molecule additives. The freezing resistance is achieved through interactions between the hydrogel’s polar functional groups (the −COOH group of poly(acrylic acid), the −CO– group of polyvinylpyrrolidone, and the −OH group of phytic acid) and water molecules, which modify the distribution of hydrogen bonds within the system. These hydrogels demonstrate excellent mechanical resilience (92%) and conductivity, both of which are maintained at subzero temperatures. Additionally, flexible sensors made from these hydrogels exhibit reliable signal stability in low-temperature environments. This work presents an effective strategy for improving the freezing resistance of hydrogels, advancing our understanding of antifreezing mechanisms, and providing practical insights for future applications, particularly in wearable sensor technologies.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Zhijie Fan,Heng Xu,Zhen Liu,Xiandie Zhang,Xuxu Cui,Jie Ji,Haozhe Li,Xiaode Guo
Novel elastomers offer new opportunities to develop multifunctional materials in terms of combining mechanical strength, room-temperature self-healing properties and recyclability. However, self-healing polymers have high mechanical strength at high internal cross-linking density, but restrict the movement of molecular chain segments leading to reduced self-healing efficiency. The presence of microphase-separated structures makes the polymers poorly efficient for repair at room temperature. In this paper, a multiphase hydrogen bonding (H-bonding) strategy is used to introduce an aliphatic ring into the system to form a repeating unit with the hard segments, as well as a bis-benzene ring structure with a methylene linkage to disrupt the crystallization of the hard domains. Specifically, PUPI-M 2 I 3 has a mechanical tensile strength of 17.93 MPa, an excellent tensile ratio of 1109.88 %, the sample can recover 95.93 % at room temperature after 24 h of fracture and stretching, with excellent room temperature self-healing performance and recyclability. Meanwhile, the self-healing flame-retardant material based on PUPI-M 2 I 3 is developed by comprehensive consideration, which opens a new way for the research and development of flame-retardant materials.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2025
·
IF 3.3
Jiamin Liu,Yuntao Ruan,Qiaoqi Qin,Yong Shen,Zhengliang Wang,Daibin Kuang,Long Jiang
Herein, we designed organic cations with multiple donor and acceptor sites of hydrogen bonds and reported reversible luminescence modulation in 0D manganese-based metal halides via water-driven in situ structural transformations with the above adaptive hydrogen-bonding cation. The non-fluorescent-to-fluorescent transition at human body temperature highlights their high sensitivity and environmental adaptability as promising candidates for advanced fluorescence-based sensing and anti-counterfeiting applications. Besides, the high photoluminescence quantum yield and great stability of fluorescent (BBD)MnBr4 provide a way to explore OIHMHs pumped by green light for white LEDs.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY
·
2023
·
IF 9
Haoqiang Sheng,Xiaobin Huang,Wenbin Hu,Yuan Ji,Junming Chen,Mingyun Xie,Miaoshen He,Bo Zhang,Hong Liu
Sustainable aviation fuels (SAF) are a major research focus in the refining and aerospace industries. However, the liquid-phase separation and low-temperature starting performance of ethanol-based fuels are a difficult problem for SAF development. In this study, a biomimetic hydrogen bond strategy, inspired by the DNA structure, was used to stably disperse an ethanol kerosene-based nanofluid fuel. Carbonized poly [cyclotriphosphazene-co-(4,4′-sulfonyldiphenol)] (CPZS) nanoparticles (containing hydrogen bond acceptor) were synthesized to improve the dispersion and sedimentation and inhibit absorption of water by the fuel, allowing the proportion of ethanol to be increased to 50 wt%. This fuel had an unprecedented shelf-life of 140 days (representing an extension of 560%). The hydrogen bonding between CPZS and the ethanol/kerosene hybrid fuel was verified. The CPZS and ethanol/kerosene hybrid fuel exhibited excellent stability and dramatically enhanced the ignition performance, with the ignition delay time declining to 243 ms at an ambient temperature of 975 °C (821.0 ms for E50/K50). Compared with pure kerosene fuel, the CO 2 emissions of the E50/K50 hybrid fuel combustion decreased by 19.13%. This study provides a new biomimetic strategy based on hydrogen bonding for preparing ethanol-based fuel with a long shelf-life, enabling the possibility of directly using biomass ethanol in SAF.
研究领域:
能源科学
·
材料科学
·
化学工程
✓ 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）