相关实验视频

Updated: Feb 27, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

硫化石墨烯氧化物添加伊米达功能化的PVDF离子交换膜,具有增强的离子导电性

Jiangtao Yu^1,2, Wenkang Li³, Wei Niu¹

¹Yangling Hesheng Irradiation Technologies Co., Ltd., Xianyang 712000, China.

|February 26, 2026

概括

这项研究开发了一种新的复合质子导电膜,使用与离子液和硫化石墨烯氧化物接种的聚乙烯化物. 新的膜显示了增强的性能和稳定性,用于流电池应用.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
聚合物科学聚合物科学

背景情况:

开发先进的膜对于高效的能量储存至关重要.
离子液体和石墨烯氧化物为膜应用提供了独特的特性.
聚乙烯化物 (PVDF) 是用于膜合成的常见聚合物骨干.

研究的目的:

为了合成和描述一种新的复合材料质子导电膜.
为了评估膜在氧还原流电池 (VRFB) 的性能.
研究硫化石墨烯氧化物 (SGO) 对膜特性的影响.

主要方法:

在PVDF的骨干上移植1-乙烯基-3-乙烯基四甲酸 ([C2VIm][BF4]).
将硫化石墨烯氧化物 (SGO) 纳入聚合物矩阵.
溶液造,质子化和综合材料特性 (FTIR,NMR,XPS,SEM-EDS) 的研究.

主要成果:

该PVDF-g-IL/SGO复合膜表现出增强的抗拉强度 (37.97 MPa),吸水率 (10.34%),离子交换能力 (1.68 mmol/g) 和质子导电性 (15.47 mS/cm).
的透度很低 (2.02 × 10−7 cm2/min),明显低于Nafion 115.5的透度.
膜表现出强大的化学稳定性和出色的VRFB性能 (97.84%CE,卓越的循环稳定性).

结论:

合成的PVDF-g-IL/SGO复合膜显示了机械和电化学性能的显著改善.
膜的低透性和高质子导电性使其适合VRFB.
这种新型复合膜是先进的流电池技术的有希望的候选人.

关键词:

离子液体是有离子的液体.质子导电性的质子导电性.辐射接种辐射接种硫化石墨烯氧化物硫化石墨烯氧化物瓦纳氧化还原流电池的电池流量

更多相关视频

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device

Published on: July 20, 2021

Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone

Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone

Published on: February 23, 2017

相关概念视频

Ion Exchange

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...

Potentiometry: Membrane Electrodes

Potentiometry: Membrane Electrodes

Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...