Understanding Binary Interactions and Aging Effects in Catalyst Layer Inks for Controlled Manufacturing
Understanding Binary Interactions and Aging Effects in Catalyst Layer Inks for Controlled Manufacturing
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了解用于受控制造的催化剂层油墨中的二元相互作用和老化效应
DOI：
10.1149/08008.0301ecst
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Hatzell, Kelsey B
中科院分区：
文献类型：
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作者：
Dixit, Marm;Hatzell, Kelsey B
在静态和动态操作条件下研究了全氟磺化离聚物在碳基胶体油墨中的负载效果。结果表明，溶剂类型和聚合物负载量在油墨稳定性、聚集和老化中起作用。动态光散射以及剪切和蠕变流变实验表明，向碳墨中添加聚合物可以充当稳定剂，增加空间排斥力并降低墨的总体粘度。当聚合物负载增加到30wt%以上时，观察到柔度降低约30 MPa-1。在高聚合物负载的顺应性下降表明底层碳材料之间的弱相互作用，并表明不同的剪切加工路线可能存在临界聚合物负载。
The effect of perfluorosulfonated ionomer loading in carbon-based colloidal inks is investigated under static and dynamic operating conditions. The results show that both the solvent-type and polymer loading play a role in ink stability, aggregation, and aging. Dynamic light scattering and shear and creep rheological experiments show that the addition of a polymer to carbon inks can act as a stabilizing agent which increases steric repulsion and decreases the inks overall viscosity. As the polymer loading is increased above 30wt% a decrease of approximately 30 MPa-1 in compliance is observed. A decrease in compliance at high polymer loading suggests weak interactions between the underlying carbon materials and indicates that a critical polymer loadings may exist for different shear processing routes.