Solid State Ionics最新文献

{"title":"Current trends in solid state ionics: Defect engineering and surface chemistry","authors":"Federico Baiutti ,&nbsp;Matthäus Siebenhofer ,&nbsp;WooChul Jung ,&nbsp;Alexander K. Opitz","doi":"10.1016/j.ssi.2026.117141","DOIUrl":"10.1016/j.ssi.2026.117141","url":null,"abstract":"<div><div>This proceedings-perspective paper introduces a new publication format that connects the immediacy of conference reporting with the depth of expert analysis. It summarizes contributions and discussions from the <em>E</em>-MRS 2025 Spring Meeting Symposium K on “<em>Solid State Ionics: Functional Materials and Devices for Electrochemical Energy Conversion and Storage Applications”</em>, highlighting recent advances and open challenges in the field.</div><div>Three major research directions are outlined: First, the deliberate control of material defects is shown to govern ionic and electronic transport as well as stability in functional oxides. Second, tailored surface modifications emerge as a powerful tool to tailor oxygen exchange and catalytic activity of mixed conducting electrodes. Third, exsolution of metal particles from oxide hosts is presented as a versatile route to design durable and adaptive catalysts. Together, these developments illustrate how coupling defect control, surface engineering, and exsolution enables next-generation materials for electrochemical energy conversion and storage.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"437 ","pages":"Article 117141"},"PeriodicalIF":3.3,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076318","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}

{"title":"Tuning electrical conductivity and dielectric properties of chitosan/polyaniline by doping with varying concentration of Nb2O5 nanoparticles","authors":"Madihally Nagaraja ,&nbsp;Sushma Prashanth ,&nbsp;Praveen Beekanahalli Mokshanatha ,&nbsp;Jayadev Pattar ,&nbsp;Shambonahalli Rajanna Manohara ,&nbsp;Kenchaiah Sunil","doi":"10.1016/j.ssi.2026.117129","DOIUrl":"10.1016/j.ssi.2026.117129","url":null,"abstract":"<div><div>Chitosan/polyaniline (CPA) and chitosan/polyaniline/Nb₂O₅ (CPAN) hybrid nanocomposites were successfully synthesized via in situ oxidative polymerization of aniline using ammonium persulfate as the oxidizing agent, incorporating controlled Nb₂O₅ nanoparticle loadings (0.2–0.8 g). Structural and morphological analyses using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) confirmed the successful incorporation and uniform dispersion of Nb₂O₅ nanoparticles within the chitosan/polyaniline matrix, along with the formation of well-defined nanocomposites. The AC conductivity (σ_AC), measured in the frequency range of 10 Hz–8 MHz, exhibited a frequency-dependent increase consistent with Jonscher's power law, indicating that correlated barrier hopping (CBH) is the dominant conduction mechanism. Among the samples, the CPA nanocomposite exhibited the highest σ_AC value (6.91 × 10⁻² S/m at 8 MHz), suggesting improved charge-carrier mobility at high frequencies. Dielectric studies revealed that both the dielectric constant (ε') and dielectric loss (ε″) decreased with increasing Nb₂O₅ content, attributed to reduced charge mobility and enhanced interfacial polarization. At 10 Hz, CPA exhibited exceptionally high dielectric constant (ε' = 3.4 × 10⁷) and dielectric loss (ε″ = 2.6 × 10⁸) values. Tangent loss spectra displayed distinct relaxation peaks, confirming dielectric relaxation behaviour, while impedance and electric modulus analyses indicated non-Debye-type relaxation. The tunable electrical and dielectric responses of the CPAN nanocomposites demonstrate their potential for high-frequency and electronic applications, including energy storage, optoelectronics, thin-film transistors, electrodes, and biosensors.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"437 ","pages":"Article 117129"},"PeriodicalIF":3.3,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026124","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}

{"title":"Enhanced ionic conductivity and dielectric performance of CaB₂O₄-doped 2-hydroxyethyl cellulose polymer electrolytes for electrical double layer capacitor applications","authors":"Ranaa M. Almarshedy ,&nbsp;Siti Rohana Majid ,&nbsp;Ninie Suhana Abdul Manan","doi":"10.1016/j.ssi.2026.117125","DOIUrl":"10.1016/j.ssi.2026.117125","url":null,"abstract":"<div><div>In this study, the effects of calcium metaborate (CaB₂O₄) doping on the 2-hydroxyethyl cellulose (2-HEC)-based polymer electrolytes (PEs), which were synthesised using the solution casting method, were investigated. The electrolyte containing 27.27 wt% CaB₂O₄ achieved the highest ionic conductivity of 1.7 × 10⁻⁶ S cm⁻¹, attributed to enhanced amorphous regions promoting ion mobility. Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) analyses confirmed reduced crystallinity and increased polymer chain mobility, and formed additional ion-conductive pathways upon CaB₂O₄ incorporation. Dielectric analysis showed increases in ε' and ε'′ values up to 27.27 wt% CaB₂O₄, indicating adequate charge storage and interfacial polarisation. Galvanostatic charge-discharge (GCD) and cyclic voltammetry (CV) tests confirmed the electric double-layer capacitor (EDLC) behaviour, with stable specific capacitance across extended voltage windows. The enhanced samples exhibited high ionic transference numbers and expanded electrochemical stability windows (ESW) in linear sweep voltammetry (LSV), reaching approximately 5.15 V. Notably, reducing the discharge current from 2 mA g⁻¹ to 0.25 mA g⁻¹, resulted in a substantial increase in specific capacitance, rising from 1.51 to 16 F g⁻¹ (in the 0–1 V window) and from 1.79 to 18.2 F g⁻¹ (in the 0–1.5 V window), which was attributed to improved ion accessibility and more efficient double-layer formation. These findings suggested that the 2-HEC/ CaB₂O₄ PEs were suitable for use in flexible and efficient energy storage devices, particularly in calcium-ion batteries and electrochemical capacitors.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"436 ","pages":"Article 117125"},"PeriodicalIF":3.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145923920","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}

{"title":"Corrigendum to “Resistance-based transmission-line model for O2 flux prediction in Gd0.1Ce0.9O2−δ–SrFe0.9Ti0.1O3−δ composite membranes” [Solid State Ionics 434 (2026) 117101]","authors":"Darshilkumar N. Chhatrodiya ,&nbsp;Sunil Kumar ,&nbsp;Santanu De ,&nbsp;Shobit Omar","doi":"10.1016/j.ssi.2026.117127","DOIUrl":"10.1016/j.ssi.2026.117127","url":null,"abstract":"","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"436 ","pages":"Article 117127"},"PeriodicalIF":3.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024164","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}

{"title":"Engineering dense superionic Li₁₊ₓAlₓTi₂₋ₓ(PO₄)₃ solid electrolytes for safer solid-state Li-ion batteries: Impact of sintering temperature and Al3+ doping","authors":"Sumit Khatua ,&nbsp;K. Ramakrushna Achary ,&nbsp;K. Sasikumar ,&nbsp;Lakshmi Hrushita Korlapati ,&nbsp;L.N. Patro","doi":"10.1016/j.ssi.2026.117128","DOIUrl":"10.1016/j.ssi.2026.117128","url":null,"abstract":"<div><div>Li-based solid electrolytes with the NASICON structure offer promising solutions for developing safer solid-state Li-ion batteries (SSLIBs) as potential alternatives to conventional LIBs that use liquid electrolytes, which are prone to safety risks, leakage, and thermal instability. LATP (Li_1+<em>x</em>Al_<em>x</em>Ti_2-<em>x</em>(PO₄)₃) solid electrolytes belong to the LMP [LiM₂(PO₄)₃: M: Zr, Ti, and Ge] family of materials and are considered promising for large-scale SSLIB applications due to their low cost compared to LGP-based solid electrolytes and superior ionic conductivity relative to LZP-based solid electrolytes. In the present study, highly dense bare LTP and Al³⁺-doped LTP (LATP) were prepared using the solid-state reaction method, and their structural and transport behaviour were investigated by varying the Al³⁺ content (<em>x</em> = 0.2 to 0.4) and the sintering temperature (900–1100 °C). Conductivity measurements using impedance spectroscopy showed that Li_1+<em>x</em>Al_<em>x</em>Ti_2-<em>x</em>(PO₄)₃ with an <em>x</em> = 0.3 composition sintered at 1000 °C (0.3-LATP@1000), exhibits the highest ionic conductivity (7.2 × 10⁻⁵ S cm⁻¹) at room temperature. The transport results of LATP solid electrolytes, with respect to different sintering temperatures and Al³⁺ dopant concentrations, were explained in terms of their crystal structure, relative density, and morphology. DC polarization measurements revealed that ions are the major charge carriers, while linear sweep voltammetry tests demonstrated excellent ESW with Li-metal, highlighting the potential of 0.3-LATP@1000 solid electrolyte for SSLIBs. Li stripping and plating measurements using a symmetric cell (Li/0.3-LATP@1000/Li) demonstrated good stability of the solid electrolyte for 500 h at a current density of 0.05 mA cm⁻². Finally, SSLIB with the LFP/0.3-LATP@1000/Li configuration was demonstrated, exhibiting a discharge specific capacity of 158 mA h g⁻¹ at 0.1C.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"436 ","pages":"Article 117128"},"PeriodicalIF":3.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974855","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}

{"title":"One – Step synthesis of glass ceramic Li6PS5Cl1-xIx solid electrolytes for all-solid-state batteries","authors":"Nurcemal Atmaca ,&nbsp;Mahir Uenal ,&nbsp;Hansen Chang ,&nbsp;Oliver Clemens","doi":"10.1016/j.ssi.2025.117116","DOIUrl":"10.1016/j.ssi.2025.117116","url":null,"abstract":"<div><div>Different variations of glass-ceramic Li₆PS₅Cl_1-xI_x (x = 0, 0.1, 0.2, 0.4, 0.5, 0.6, 0.8, 1) were synthesized using single-step ball milling without the need of an additional heating step. By using smaller diameter balls compared to conventional synthesis methods, we ensure smaller particle sizes, improving the contact between the particles due to larger surface area effects. Ionic conductivities up to 1.1 mS/cm were achieved with an activation energy of 0.19 eV. The galvanostatic cycling stability were tested by using the prepared samples as a separator in an all-solid-state battery with an NMC811 mixed commercially available Li₆PS₅Cl cathode and an In-Li anode.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"436 ","pages":"Article 117116"},"PeriodicalIF":3.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145923921","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}

{"title":"Influence of defect interactions on the electrical conductivity of gadolinium-doped ceria","authors":"Ahmad Shaur ,&nbsp;Henny J.M. Bouwmeester","doi":"10.1016/j.ssi.2025.117107","DOIUrl":"10.1016/j.ssi.2025.117107","url":null,"abstract":"<div><div>Gadolinium-doped ceria exhibits mixed ionic-electronic conduction at high temperatures and low partial pressures of oxygen (<em>p</em>O₂). In this study, the total electrical conductivity of Gd_0.10Ce_0.90O_2-δ (GCO) was investigated in the temperature range of 650–850 °C as a function of <em>p</em>O₂ between 10^-0.36 and 10^-25 bar. By concurrently modelling data of oxygen non-stoichiometry and electrical conductivity, our work reveals clear deviations from ideal solution behaviour. The observed decrease in the reduction enthalpy of GCO at low values of <em>p</em>O₂ can be accounted to net attractive defect interactions. These deviations from ideal solution behaviour can be traced back in the electrical conductivity data. A key distinction of the present study from previous ones is that it does not assume that the charge carriers in GCO are partially trapped in defect associates.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"436 ","pages":"Article 117107"},"PeriodicalIF":3.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145904097","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}

{"title":"P2-type Na0.6Mg0.2Cu0.1Mn0.7O2 cathode materials with enhanced cyclic stability for high-energy Na-ion batteries","authors":"LiLei Ding,&nbsp;Yong Li","doi":"10.1016/j.ssi.2026.117126","DOIUrl":"10.1016/j.ssi.2026.117126","url":null,"abstract":"<div><div>The increased capacity offered by oxygen-redox active cathode materials for rechargeable sodium-ion batteries (SIBs) offers a pathway to the next generation of high-gravimetric-capacity cathodes for use in devices, transportation and on the grid. However, one of the limiting factors in the development of oxygen-redox-based electrodes is the stability of the high-voltage plateau. In this study, the structural stability was improved by incorporating copper ion into P2-type Na_0.6Mg_0.3Mn_0.7O₂. As designed, the partial Cu substitution in Na_0.6Mg_0.2Cu_0.1Mn_0.7O₂ significantly enhances high-voltage plateau stability, achieving a total reversible capacity of 163.5 mA h g⁻¹ between 1.5 and 4.4 V at 0.2C (1C = 160 mA/g). Crucially, this modified material retains more capacity (109.3 mA h g⁻¹) within the high-voltage plateau region (&gt;4.1 V) than the unmodified counterpart under identical cycling protocols, as evidenced by dQ/dV analysis. Moreover, Cu doping can also enhance Mn redox ability and weaken Jahn−Teller distortion. Therefore, the strong Cu<img>O covalency bond could reform the excessive oxidation of oxygen anions, retaining capacity retention of 94.4 % after 100 cycles at 2C.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"436 ","pages":"Article 117126"},"PeriodicalIF":3.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924026","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}

{"title":"Synthesis-dependent phase control and ionic transport in anti-fluorite Li5FeO4-based oxides via Zn and transition metal doping","authors":"Chenshuo Fu ,&nbsp;Hao Liu ,&nbsp;Chunsheng Sun ,&nbsp;Ling Gao ,&nbsp;Guowei Zhao","doi":"10.1016/j.ssi.2025.117118","DOIUrl":"10.1016/j.ssi.2025.117118","url":null,"abstract":"<div><div>Lithium ionic conductors, which could be used as solid-state electrolytes (SSEs), are essential for safer, high-energy-density lithium-ion batteries. Although sulfide and oxide SSEs offer high ionic conductivities, they often suffer from limited air stability or processing challenges. To expand the material landscape, this study investigates Zn- and <em>M</em>-doped Li₅FeO₄ as novel oxide-based lithium ionic conductors with anti-fluorite structures. Two solid-solution regions (α: 0 ≤ <em>x</em> ≤ 0.3; β: 0.5 ≤ <em>x</em> ≤ 1.0) were identified, with <em>x</em> = 0.5 exhibiting the highest ionic conductivity of (1.3 ± 0.05) × 10⁻³ S·cm⁻¹ at 300 °C. Co-doping with <em>M</em>²⁺ (<em>M</em> = Ni, Co, Cu, Mn) increased the thermal stability by suppressing moisture reactions, but did not further improve ionic conductivity. These findings highlight the importance of phase control, lattice expansion, and post-synthesis cooling for optimizing oxide electrolytes.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"435 ","pages":"Article 117118"},"PeriodicalIF":3.3,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881422","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}

{"title":"Copper iodide - doped thioarsenates CuI-As2S3: Glass formation, macroscopic and electrical properties","authors":"Zeinab Daher ,&nbsp;Tinehinane Bounazef ,&nbsp;Maria Bokova ,&nbsp;Mohammad Kassem ,&nbsp;Michael Depriester ,&nbsp;Hussein Mortada ,&nbsp;Joumana Toufaily ,&nbsp;Eugene Bychkov","doi":"10.1016/j.ssi.2025.117117","DOIUrl":"10.1016/j.ssi.2025.117117","url":null,"abstract":"<div><div>Copper chalcogenide glasses are promising materials for solid-state ionics. However, little information is available on CuI-containing chalcogenide glasses. In this work, the quasi-binary system (CuI)_<em>x</em>(As₂S₃)_1-<em>x</em> was synthesized by the melt-quenching technique over the concentration range 0.0 ≤ <em>x</em> ≤ 0.7. The glass-forming domain extends up to <em>x</em> = 0.5. Fundamental glass characteristics, including macroscopic and thermal properties, were studied. Conductivity was measured using both direct current (<em>dc</em>) and alternating current (<em>ac</em>) impedance techniques over a wide range of copper concentrations. At room temperature, the conductivity increases by 12 orders of magnitude with increasing copper iodide content, from 4.4 × 10⁻¹⁶ S.cm⁻¹ for <em>x</em> = 0.0 to 5.06 × 10⁻⁴ S.cm⁻¹ for <em>x</em> = 0.7. Comparison with ⁶⁴Cu tracer diffusion in selenide counterparts confirms the predominantly ionic nature of the sulfide glass conductivity. The composition dependence reveals two drastically different ion transport regimes: one at low and another at high copper content.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"435 ","pages":"Article 117117"},"PeriodicalIF":3.3,"publicationDate":"2026-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881421","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}