Mohd Faiz Hassan, Muhammad Zulhasnan Mohd Zahari, Muhammad Idlan Johar
{"title":"The effects of sodium methanoate on starch: a study of morphology, structure, and ionic conductivity","authors":"Mohd Faiz Hassan, Muhammad Zulhasnan Mohd Zahari, Muhammad Idlan Johar","doi":"10.1007/s11581-025-06254-9","DOIUrl":null,"url":null,"abstract":"<div><p>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<sup>−4</sup> S cm<sup>−1</sup>. 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.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"31 5","pages":"4441 - 4453"},"PeriodicalIF":2.4000,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ionics","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11581-025-06254-9","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
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.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
