Mohd Faiz Hassan, Muhammad Zulhasnan Mohd Zahari, Muhammad Idlan Johar
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引用次数: 0
摘要
本研究将淀粉-钠盐混合物与蒸馏水和甘油溶液浇铸制备固态膜。x射线衍射（XRD）分析表明，甲醇酸钠（HCOONa）改变了膜的结构特征，调整了非晶态比。傅里叶变换红外光谱（FTIR）显示了淀粉和HCOONa之间的复杂性，并通过新的官能团表示。扫描电子显微镜和能量色散x射线能谱（SEM-EDS）分析显示，聚合物表面形貌粗糙而均匀，并证实了钠在聚合物基体中的均匀分布。电化学阻抗谱（EIS）测试表明，含30 wt% HCOONa的膜具有最高的离子电导率，为2.07 × 10−4 S cm−1。这些发现强调了这些制备的固体生物聚合物电解质作为双重用途膜的潜力——在固态电池中既可以作为分离器又可以作为电解质。
The effects of sodium methanoate on starch: a study of morphology, structure, and ionic conductivity
This study prepared solid-state membranes using a starch-sodium salt mixture with distilled water and glycerin via solution casting. X-ray diffraction (XRD) analysis showed that sodium methanoate (HCOONa) altered the structural characteristics of the membranes, tuning a crystalline-to-amorphous ratio. Fourier transform infrared (FTIR) spectroscopy showed the complexity between starch and HCOONa, indicated by new functional groups. Scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM–EDS) analysis revealed a rough yet uniform surface morphology and confirmed the homogeneous distribution of sodium within the polymer matrix. Electrochemical impedance spectroscopy (EIS) measurements demonstrated that the membrane with 30 wt% HCOONa had the highest ionic conductivity at 2.07 × 10−4 S cm−1. These findings highlight the potential of these prepared solid biopolymer electrolytes as dual-purpose membranes—serving as both separators and electrolytes—in solid-state batteries.
期刊介绍：
Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.
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