Solid State Ionics最新文献

Development of functionalized nanocomposite membrane composed of sulfonated PVDF/GO and thermo-mechanically modified Fly-Ash for application in PEMFCs

IF 3 4区材料科学

Solid State Ionics Pub Date : 2025-04-26 DOI: 10.1016/j.ssi.2025.116870

Ravi Bhushan Pathak , Anand Prakash Mishra , Vijay Varma , Piyush Kumar

{"title":"Development of functionalized nanocomposite membrane composed of sulfonated PVDF/GO and thermo-mechanically modified Fly-Ash for application in PEMFCs","authors":"Ravi Bhushan Pathak , Anand Prakash Mishra , Vijay Varma , Piyush Kumar","doi":"10.1016/j.ssi.2025.116870","DOIUrl":"10.1016/j.ssi.2025.116870","url":null,"abstract":"<div><div>Polymer electrolyte membrane fuel cells (PEMFCs) have become a promising technology due to their high efficiency and zero emission of toxic gases. The present work deals with the fabrication of a cost-efficient nanocomposite proton exchange membrane (PEM), prepared by incorporation of graphene oxide (GO) prepared in the laboratory by modified Hummer's method and thermo-mechanically modified Fly Ash (FA) within the host PVDF [poly(vinylidene fluoride)] polymer matrix. Subsequently, the nanocomposite membranes were treated with the well-known sulfonating agent chlorosulfonic acid at 60 °C for 30 min. The incorporation of GO and FA nanoparticles into the polymer matrix and the membrane sulfonation was verified using various spectroscopic methods, including XRD, FTIR, Laser Raman, FESEM-EDX, and AFM analyses. The highest ion exchange capacity (IEC) and proton conductivity (PC) are observed to be 0.88 meq g<sup>−1</sup> and 4.08 × 10<sup>−2</sup> S/cm respectively for the fabricated membrane SPGF-3. Further, it was interesting to note that with an increase in temperature from 25 °C to 75 °C, the fabricated membrane (SPGF-3) exhibited enhanced water uptake capacity from 25.6 % to 30.6 % respectively. The fuel cell performance test showed that the sulfonated membrane, composed of 95 wt% PVDF, 2.5 wt% GO, and 2.5 wt% FA, achieved a maximum current density of 1000 mA cm<sup>−2</sup> and a power density of 448 mW cm<sup>−2</sup> which quantifies its potency towards an alternative to costly Nafion membranes for PEMFCs application.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"425 ","pages":"Article 116870"},"PeriodicalIF":3.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancement of catalytic performance in Zr0.1Ce0.9O2-δ through transition metal doping and exsolution

IF 3 4区材料科学

Solid State Ionics Pub Date : 2025-04-23 DOI: 10.1016/j.ssi.2025.116868

Haodong Wu , Bo Yu , Chengsheng Ni , Xiangling Yue , John T.S. Irvine

{"title":"Enhancement of catalytic performance in Zr0.1Ce0.9O2-δ through transition metal doping and exsolution","authors":"Haodong Wu , Bo Yu , Chengsheng Ni , Xiangling Yue , John T.S. Irvine","doi":"10.1016/j.ssi.2025.116868","DOIUrl":"10.1016/j.ssi.2025.116868","url":null,"abstract":"<div><div>As a cost-effective alternative to noble material, Zr<sub>0.1</sub>Ce<sub>0.9</sub>O<sub>2-δ</sub> (ZDC) plays a crucial role in industrial catalysis, including applications such as automotive exhaust treatment, solid oxide fuel cells, and the catalytic combustion of hydrocarbons, due to its excellent oxygen storage capacity, high thermal stability, and resistance to carbon deposition. An important new approach for optimizing the performance of Zr<sub>0.1</sub>Ce<sub>0.9</sub>O<sub>2-<em>δ</em></sub> as a catalyst is the <em>in-situ</em> exsolution of metal nanoparticles. Exsolution is recognized as a promising strategy for generating highly dispersed nanoparticles on the catalyst support, enhancing catalytic activity and stability. Herein, transition metal cations (Fe, Co, Ni and Cu ions) are doped into the ZDC fluorite-structured oxides (ZDC<em>M</em>) and exsolved on its surface under reduction conditions (ZDC<em>M</em>-R, <em>M</em> = Fe, Co, Ni and Cu). X-ray photoelectron spectroscopy and Raman spectroscopy confirm that the exsolution of Co and Cu generated an oxygen-vacancy-rich layer on the support surface, which significantly enhanced their catalytic performance<strong>.</strong> As a result, both ZDCCu-R and ZDCCo-R catalysts were able to achieve complete CO oxidation at temperatures below 200 °C. Moreover, ZDCCo-based anodes have shown a maximum power density of 348.2 mW at 800 °C and demonstrated exceptional stability during direct methane utilization in solid oxide fuel cells.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"425 ","pages":"Article 116868"},"PeriodicalIF":3.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sodium ion conductivity of hexagonal layered P2-type phases with multiple cationic substitutions

IF 3 4区材料科学

Solid State Ionics Pub Date : 2025-04-22 DOI: 10.1016/j.ssi.2025.116829

Vladimir B. Nalbandyan , Alexey Yu. Nikulin , Ivan G. Sheptun , Yuri V. Popov , Igor L. Shukaev

{"title":"Sodium ion conductivity of hexagonal layered P2-type phases with multiple cationic substitutions","authors":"Vladimir B. Nalbandyan , Alexey Yu. Nikulin , Ivan G. Sheptun , Yuri V. Popov , Igor L. Shukaev","doi":"10.1016/j.ssi.2025.116829","DOIUrl":"10.1016/j.ssi.2025.116829","url":null,"abstract":"<div><div>It is now widely assumed that conductivity of solid electrolytes may be markedly enhanced by the “high-entropy” (HE) effect. However, HE electrolytes usually differ from their simpler isomorphs by other factors affecting conductivity: lattice expansion/contraction, mobile ion content, bond ionicity, quality of samples. To attribute enhanced conductivity to the HE effect, all other factors should be identical. This work compares “simple” and “HE” ceramic sodium-ion conductors of two related structure types: P2 Na<sub>x</sub>(M<sub>y</sub>Ti<sub>1-y</sub>)O<sub>2</sub> and honeycomb-ordered P2S Na<sub>2</sub>M<sub>2</sub>TeO<sub>6</sub>, with similar unit cell data, x values, density, and texture and does not reveal any considerable HE effect. In particular, new Na<sub>2</sub>M<sub>2</sub>TeO<sub>6</sub> conductors combining three to five divalent M (from the list Mg, Co, Ni, Cu, Zn) show similar conductivities with their monocation analogs. Higher conductivity of the P2-type titanates (2–4 mS/cm at 373 K) is explained by the geometrical effect due to smaller size of octahedral cations and possibility of decreased x values.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"425 ","pages":"Article 116829"},"PeriodicalIF":3.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Crystalline vs. amorphous Li4PS4I: Impact of structure on ionic transport and performances in solid-state battery

IF 3 4区材料科学

Solid State Ionics Pub Date : 2025-04-16 DOI: 10.1016/j.ssi.2025.116869

Duy Linh Pham , Jean-Noël Chotard , Virginie Viallet , Matthew R. Suchomel , Francois Fauth , Emmanuelle Suard , Stephanie Croyeau , Marc-David Braida , Thierry Le Mercier , Christian Masquelier

{"title":"Crystalline vs. amorphous Li4PS4I: Impact of structure on ionic transport and performances in solid-state battery","authors":"Duy Linh Pham , Jean-Noël Chotard , Virginie Viallet , Matthew R. Suchomel , Francois Fauth , Emmanuelle Suard , Stephanie Croyeau , Marc-David Braida , Thierry Le Mercier , Christian Masquelier","doi":"10.1016/j.ssi.2025.116869","DOIUrl":"10.1016/j.ssi.2025.116869","url":null,"abstract":"<div><div>All-solid-state batteries (ASSBs) are emerging as next-generation energy storage solutions due to their potential advantages, including enhanced safety, higher energy density, and broader operational temperature ranges. Among various solid electrolytes, amorphous and crystalline Li<sub>4</sub>PS<sub>4</sub>I, have attracted interest due to their predicted high conductivity, and high moisture-tolerance. However, experimental studies have reported a wide variation in conductivity values for Li<sub>4</sub>PS<sub>4</sub>I, ranging from 0.03 to 3.5 mS.cm<sup>−1</sup> at 298 K which are significantly lower than theoretical predictions. Herein, by employing a combination of X-ray diffraction (XRD), <sup>31</sup>P magic-angle spinning nuclear magnetic resonance (<sup>31</sup>P MAS NMR), electrical impedance spectroscopy (EIS), we demonstrate that controlling the crystallinity of Li<sub>4</sub>PS<sub>4</sub>I plays a crucial role in its electrochemical performance. Pair distribution function (PDF) analysis reveals the differences in local atomic arrangements between amorphous and crystalline Li<sub>4</sub>PS<sub>4</sub>I. Additionally, the analysis indicates that mechanical milling alters the local environment of PS<sub>4</sub> tetrahedra and iodide anions, which may explain the discrepancy in conductivity. Furthermore, ASSBs incorporating amorphous-ceramic Li<sub>4</sub>PS<sub>4</sub>I in the cathode composite exhibit enhanced cycling stability compared to amorphous Li<sub>4</sub>PS<sub>4</sub>I. These findings underscore the potential of tuning crystallinity as an effective approach to optimize the ionic transport properties and cycling performance of ASSBs, paving the way for further advancements in solid electrolytes.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"425 ","pages":"Article 116869"},"PeriodicalIF":3.0,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Designing highly active electrode by infiltration technique for co-electrolysis of CO2 and H2O

IF 3 4区材料科学

Solid State Ionics Pub Date : 2025-04-16 DOI: 10.1016/j.ssi.2025.116867

Kuan-Ting Wu , Tatsumi Ishihara

{"title":"Designing highly active electrode by infiltration technique for co-electrolysis of CO2 and H2O","authors":"Kuan-Ting Wu , Tatsumi Ishihara","doi":"10.1016/j.ssi.2025.116867","DOIUrl":"10.1016/j.ssi.2025.116867","url":null,"abstract":"<div><div>The efficient utilization of CO<sub>2</sub> emissions for energy storage and chemical synthesis is critical to achieving sustainable development. This study focuses on enhancing the performance of solid oxide electrolysis cells (SOECs) for intermediate-temperature co-electrolysis of CO<sub>2</sub> and H<sub>2</sub>O to produce syngas. A novel infiltration technique was employed to introduce nanoscale binary-oxide catalysts, including lanthanide, transition, and alkaline earth metal oxides, into selected scaffold electrodes. Among these catalysts, cerium oxide (CeO<sub>2</sub>) exhibited significant improvements in electrolysis current density and electrocatalytic activity when paring with the potential La(Sr)Fe(Mn)O<sub>3</sub> (LSFM) perovskite electrode material. Notably, due to the infiltration of CeO<sub>2</sub>, a marked enhancement in electrolysis current density (> 60 %) can be achieved with exceptional Faradaic efficiency, in comparison to the non-infiltrated cell. The observed performance enhancement can be attributed to reduced internal resistances, improved microstructural connectivity, and increased active surface area. However, controlling the syngas product remains a challenge, with a bias toward H₂ production in all tested cells, primarily due to the strong influence of the water-gas shift reaction. Despite this limitation, the findings underscore the significant potential of Ce-oxide infiltrants as highly active catalysts for advancing CO<sub>2</sub>/H<sub>2</sub>O co-electrolysis applications.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"425 ","pages":"Article 116867"},"PeriodicalIF":3.0,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel ormolytes for smart electrochromic windows for energy-efficient buildings

IF 3 4区材料科学

Solid State Ionics Pub Date : 2025-04-15 DOI: 10.1016/j.ssi.2025.116850

P.J. Nunes , Wojciech Zając , Katarzyna Styszko , Sónia Pereira , Elvira Fortunato , V. de Zea Bermudez , M. Fernandes

引用次数: 0

Enhancing fluoride-ion conduction via doping-induced anionic ordering in an n = 1 Ba-based Ruddlesden-Popper oxyfluoride structure

IF 3 4区材料科学

Solid State Ionics Pub Date : 2025-04-12 DOI: 10.1016/j.ssi.2025.116866

Chanachai Pattanathummasid , Ryoji Asahi , Alex Kutana , Kazuhiro Mori , Toshiyuki Matsunaga , Tsuyoshi Takami

{"title":"Enhancing fluoride-ion conduction via doping-induced anionic ordering in an n = 1 Ba-based Ruddlesden-Popper oxyfluoride structure","authors":"Chanachai Pattanathummasid , Ryoji Asahi , Alex Kutana , Kazuhiro Mori , Toshiyuki Matsunaga , Tsuyoshi Takami","doi":"10.1016/j.ssi.2025.116866","DOIUrl":"10.1016/j.ssi.2025.116866","url":null,"abstract":"<div><div>Tuning the atomic arrangement in mixed-anion compounds is one of the key research areas in solid-state chemistry, as it enables the understanding of the structure-property relationship. In this study, we proposed a strategy for fluorine ordering in an oxyfluoride compound with an <em>n</em> = 1 Ruddlesden-Popper (RP) structure, A<sub><em>n</em>+1</sub>B<sub><em>n</em></sub>O<sub>3<em>n</em>+1-<em>x</em></sub>F<sub>2<em>x</em></sub>, by aliovalent doping at the A-site. The framework structure based on Ba<sub>2</sub>(Sn/Zr)O<sub>4-<em>x</em></sub>F<sub>2<em>x</em></sub> was selected, because oxygen and fluorine occupy all three anion positions—equatorial, apical, and interstitial. To analyze the materials, we used a combination of high-resolution neutron diffraction, synchrotron X-ray diffraction, electrochemical testing, and computational analyses. Our findings show that doping potassium leads to fluorine ordering at the interstitial sites. This ordering occurs to balance the electronic charge at the anion positions, following the electrostatic valence rule. As a result, the electrochemical properties of the compound change: the electrical conductivity increases and the activation energy decreases. These results offer new insights and suggest a strategy for controlling the atomic arrangement in mixed-anion compounds, opening possibilities for designing materials with tailored properties.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"424 ","pages":"Article 116866"},"PeriodicalIF":3.0,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The influence of Ce element doping on the mechanical properties of ZrO2 ceramic from first-principles calculations

IF 3 4区材料科学

Solid State Ionics Pub Date : 2025-04-12 DOI: 10.1016/j.ssi.2025.116865

Jiao Wang , Xun Yang , Xiao-fan Song , Chun Li , He-fa Zhu

{"title":"The influence of Ce element doping on the mechanical properties of ZrO2 ceramic from first-principles calculations","authors":"Jiao Wang , Xun Yang , Xiao-fan Song , Chun Li , He-fa Zhu","doi":"10.1016/j.ssi.2025.116865","DOIUrl":"10.1016/j.ssi.2025.116865","url":null,"abstract":"<div><div>Due to its excellent mechanical, thermal, chemical and dielectric properties, zirconia (ZrO<sub>2</sub>) is widely used in gas sensors, solid oxide fuel cells, high-durability coatings, catalysts, as well as in mechanical engineering, aerospace and dental fields. Compared with other ceramics, zirconia has excellent wear resistance, and after polishing, zirconia maintains a low surface roughness for a long time. At present, most of the researches on the mechanical properties of ZrO<sub>2</sub> doping are concentrated in the experimental stage, and the first-principle calculations are mainly focused on the optical properties, thermoelectric properties and thermodynamic properties of ZrO<sub>2</sub>. Therefore, based on density functional theory, this paper constructs a ZrO<sub>2</sub> model through Materials Studio software, conducts convergence tests on the model, studies the electronic structure and bonding of ZrO<sub>2</sub>, calculates the mechanical properties of ZrO<sub>2</sub> after doping different concentrations of CeO<sub>2</sub>, and analyzes the effects of doping concentrations on mechanical properties and elastic wave velocity from the atomic scale.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"424 ","pages":"Article 116865"},"PeriodicalIF":3.0,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on Li+ adsorption performance using PVC-H1.6Mn1.6O4 film in lithium-rich aluminum electrolyte

IF 3 4区材料科学

Solid State Ionics Pub Date : 2025-04-11 DOI: 10.1016/j.ssi.2025.116853

Zixuan Yuan , Qing-Tao Hu , Weijie Wang , Guangxin Wu , Changchun Liu , Hao Chen , He-Zhang Chen , Ying-de Huang , Wenjie Yang

{"title":"Study on Li+ adsorption performance using PVC-H1.6Mn1.6O4 film in lithium-rich aluminum electrolyte","authors":"Zixuan Yuan , Qing-Tao Hu , Weijie Wang , Guangxin Wu , Changchun Liu , Hao Chen , He-Zhang Chen , Ying-de Huang , Wenjie Yang","doi":"10.1016/j.ssi.2025.116853","DOIUrl":"10.1016/j.ssi.2025.116853","url":null,"abstract":"<div><div>With the explosion of the lithium-ion battery market, the requirement for lithium resources is growing promptly, even though traditional lithium extraction methods are inefficient and research focuses on lithium extraction from brines, efficiently extracting lithium from lithium-rich aluminum electrolytes (LRAE) is crucial. This study explores a novel approach to recover lithium from lithium-containing aluminum electrolytes through hydrochloric acid dissolution and ion-exchange adsorption, aiming to achieve high-value use of hazardous waste. The research examines the influence of various parameters-covering the effects of factors such as hydrochloric acid concentration, reaction time, reaction temperature, and liquid-solid ratio. Including the important role of these factors in the reaction process and outcome, as well as their impact on the entire process. The dissolution rate via hydrochloric acid dissolution. A dissolution efficiency of approximately 76.48 % for lithium was achieved within 90 min using a 2 mol/L hydrochloric acid solution at a temperature of 75 °C, while maintaining a liquid-to-solid ratio of 45:1. Additionally, polymer-loaded PVC-H<sub>1.6</sub>Mn<sub>1.6</sub>O<sub>4</sub> films were synthesized through a hydrothermal reaction utilizing the dissolution solution as the precursor. The optimal adsorption performance of the PVC-H<sub>1.6</sub>Mn<sub>1.6</sub>O<sub>4</sub> film was observed at mass concentration of 12 % for both PVC and the precursor. The adsorption equilibrium was attained after 480 min, resulting in a lithium ion adsorption capacity of 381.82 mg/m<sup>2</sup>. After five cycles of adsorption experiments, the lithium adsorption ability of the PVC-H<sub>1.6</sub>Mn<sub>1.6</sub>O<sub>4</sub> film in lithium-rich aluminum electrolyte solutions was determined to be 96.80 %, indicating a decrease of 3.20 % compared to the initial lithium adsorption.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"424 ","pages":"Article 116853"},"PeriodicalIF":3.0,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New proton exchange membranes based on ionic liquid doped chitosan 基于离子液体掺杂壳聚糖的新型质子交换膜

IF 3 4区材料科学

Solid State Ionics Pub Date : 2025-04-09 DOI: 10.1016/j.ssi.2025.116852

Naima Naffati , Fátima C. Teixeira , António P.S. Teixeira , C.M. Rangel

{"title":"New proton exchange membranes based on ionic liquid doped chitosan","authors":"Naima Naffati , Fátima C. Teixeira , António P.S. Teixeira , C.M. Rangel","doi":"10.1016/j.ssi.2025.116852","DOIUrl":"10.1016/j.ssi.2025.116852","url":null,"abstract":"<div><div>The development of new proton exchange membranes (PEM) for electrochemical devices have attracted researcher's attention in the pursuit for more sustainable and cost-effective technologies for clean energy production and conversion. In this work, new doped chitosan (CS) membranes were prepared by the casting method. Chitosan is an abundant, biodegradable and non-toxic material, and as a membrane, a sustainable and cheaper alternative to those perfluorinated and commonly used, such as Nafion. Three different ionic liquids were employed as dopants, ([EMIM][OTf], [EMIM][FSI] and [MIMH][HSO<sub>4</sub>]), in various concentrations and up to 50 wt% load. The new membranes were characterized by ATR-FTIR, thermogravimetry, using TGA and DSC techniques to assess their thermal properties, and by SEM, to analyse their surface morphology. Proton conduction properties of the new membranes were assessed by Electrochemical Impedance Spectroscopy (EIS). The new doped membranes showed an increase in the proton conduction compared with pristine chitosan membranes. The incorporation of ionic liquids into chitosan membranes improved their proton conductivity and thermal properties, with [EMIM][OTf] and [MIMH][HSO<sub>4</sub>] showing the most promising results. A 2-fold increment in the proton conduction was generally observed with the increase of the temperature from 30 to 60 °C. The best proton conductivity was found at 60 °C for the membrane doped with [EMIM][OTf], with a value of 47 mS.cm<sup>−1</sup>.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"424 ","pages":"Article 116852"},"PeriodicalIF":3.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0