Solid State Ionics最新文献

{"title":"Data refinement for enhanced ionic conductivity prediction in garnet-type solid-state electrolytes","authors":"Zakaria Kharbouch ,&nbsp;Mustapha Bouchaara ,&nbsp;Fadila Elkouihen ,&nbsp;Abderrahmane Habbal ,&nbsp;Ahmed Ratnani ,&nbsp;Abdessamad Faik","doi":"10.1016/j.ssi.2024.116713","DOIUrl":"10.1016/j.ssi.2024.116713","url":null,"abstract":"<div><div>The demand for advanced energy storage drives an urgency to accelerate material discovery in solid-state electrolytes. In pursuit of this aim, this study presents an innovative methodology that integrates materials science insights with machine learning techniques to improve the ionic conductivity prediction in garnet-based solid electrolytes. Utilizing an expanded dataset comprising 362 data points, and exploiting easily obtainable pre-synthesis inputs, our approach incorporates rigorous data preprocessing inspired by materials science and machine learning methodologies. Through systematic feature selection and hyperparameter tuning, the model achieved an improved R-squared value of 0.85. This study highlights the efficacy of the proposed approach and underscores the potential of machine learning in streamlining materials discovery and design for next-generation solid-state batteries.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"417 ","pages":"Article 116713"},"PeriodicalIF":3.0,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423113","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":"Ultrasound-assisted sonochemical synthesis of M2P2O7 (M = Co, Mn) nanomaterials: Enhanced structural morphology and ionic conduction mechanism","authors":"Asma Hajji,&nbsp;Ahmed Souemti,&nbsp;Adel Megriche","doi":"10.1016/j.ssi.2024.116714","DOIUrl":"10.1016/j.ssi.2024.116714","url":null,"abstract":"<div><div>This study aimed to provide insight into how ultrasonic treatment affects microstructure, electrical properties, and physicochemical characteristics. Sonochemical ultrasound synthesis offers a distinct advantage over traditional methods by creating precise reaction conditions through acoustic cavitation. This process induces high temperatures and pressures in a liquid environment, facilitating the synthesis of materials with specific structures, sizes, and properties. In response to this capability, we developed low-cost M₂P₂O₇ (M = Co, Mn) phosphate materials known as CoP and MnP. The samples were analysed for their crystalline structure, surface morphology, and elemental composition via X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM).</div><div>The electrochemical performance of the samples was assessed via complex impedance spectroscopy methods. The results demonstrate that the samples exhibit excellent semiconductor behavior, indicating their potential for use in energy and catalytic applications.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"417 ","pages":"Article 116714"},"PeriodicalIF":3.0,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423115","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":"Efficient ether-free poly(p-terphenyl-isatin-dimethylfluorene) for proton exchange membrane water electrolysis","authors":"Jiawang Ma,&nbsp;Yajie Wang,&nbsp;Tao Ban,&nbsp;Song Liu,&nbsp;Maolian Guo,&nbsp;Xinxin Wang,&nbsp;Zihui Wang,&nbsp;Xiuling Zhu","doi":"10.1016/j.ssi.2024.116703","DOIUrl":"10.1016/j.ssi.2024.116703","url":null,"abstract":"<div><div>Proton exchange membrane (PEM) is an important component that affects the cost and cell performance of PEM water electrolysis (PEMWE). In this study, a series of ether-free poly(<em>p</em>-terphenyl-isatin- dimethylfluorene) (PID-x) polymers were synthesized by superacid-catalyzed Friedel-Crafts alkylation. The transparent PEMs of sulfonated poly(<em>p</em>-terphenyl-isatin- dimethylfluorene) (SPID-x) were prepared by the solution casting method. Introduction of dimethylfluorene groups enhances proton conductivity of PEMs while also preserving their high dimensional stability. The results indicate that the synthesized PID-x has excellent solubility in non-protic polar solvents. SPID-5, prepared with 5 % dimethylfluorene in the backbone structure exhibits a high conductivity of 0.176 S·cm⁻¹ at 80 °C (compared to 0.155 S·cm⁻¹ at 80 °C for Nafion115) and excellent dimensional stability, with a swelling ratio of only 10 % at 80 °C (compared to 20 % at 80 °C for Nafion115). In the water electrolysis cell performance test, SPID-25 achieved a current density of 167 mA·cm⁻² at 2.5 V, outperforming the commercial Nafion 211 (151 mA·cm⁻²) at a similar membrane thickness.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"417 ","pages":"Article 116703"},"PeriodicalIF":3.0,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423116","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":"Retraction Notice: Reaction/diffusion in the Au-In system","authors":"Michel Millares ,&nbsp;Bernard Pieraggi ,&nbsp;Elvire Lelievre","doi":"10.1016/j.ssi.2024.116686","DOIUrl":"10.1016/j.ssi.2024.116686","url":null,"abstract":"","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"417 ","pages":"Article 116686"},"PeriodicalIF":3.0,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658763","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":"A rapid pressureless sintering strategy for LLZTO ceramic solid electrolyte sheets prepared by tape casting","authors":"Heng Pan,&nbsp;Lingcong Fan,&nbsp;Yongxi Zhang,&nbsp;Lei Zhang,&nbsp;Ying Shi,&nbsp;Jianjun Xie,&nbsp;Fang Lei","doi":"10.1016/j.ssi.2024.116708","DOIUrl":"10.1016/j.ssi.2024.116708","url":null,"abstract":"<div><div>Garnet-type electrolytes are regarded as one of the most promising solid-state electrolytes (SSEs) for lithium-ion batteries due to their potential advantages in terms of energy density, electrochemical stability and safety. To achieve the maximum energy density, it is necessary to ensure that the electrolyte layer is as thin as possible. Nevertheless, thin sheet SSE is more challenging to sinter than pellet due to the greater lithium volatilization from the high surface/volume ratio. Garnet-type SSE (Li_6.5La₃Zr_1.5Ta_0.5O₁₂, LLZTO) green tape was prepared by the tape-casting technique. The effects of supporter, sintering temperature and dwell time on the relative density, microstructure and ionic conductivity of thin sheet were investigated. A ceramic SSE sheet with a thickness of 173 μm, a relative density of 97.2 %, an ionic conductivity of 2.02 × 10⁻⁴ S/cm at 25 °C and an activation energy of 0.25 eV, was achieved using a rapid pressureless sintering at 1250 °C for 25 min with a MgO supporter. This work offers insights into the practical production of LLZTO sheets.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"417 ","pages":"Article 116708"},"PeriodicalIF":3.0,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357886","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":"Quantitative determination of charge trapped at grain boundaries in ionic conductors by impedance spectroscopy","authors":"Sangtae Kim ,&nbsp;Sergey Khodorov ,&nbsp;Leonid Chernyak ,&nbsp;Thomas Defferriere ,&nbsp;Harry Tuller ,&nbsp;Igor Lubomirsky","doi":"10.1016/j.ssi.2024.116706","DOIUrl":"10.1016/j.ssi.2024.116706","url":null,"abstract":"<div><div>We propose a method for determining the density of space charge trapped at grain boundaries in polycrystalline solid state ionic conductors. The method is an extension of the earlier proposed Linear Diffusion Model (LDM) that relies on the impedance spectra-derived current-voltage characteristics of grain boundaries. The utility of the extended LDM version is demonstrated to successfully and nondestructively obtain values for the space charge density trapped at the grain boundaries in a variety of oxygen ion conductors including Sr-doped LaGaO₃, Y-doped CeO₂, and Gd-doped CeO₂, and proton conductors including Sr-doped LaNbO₃ and Y-doped BaZrO₃. For all cases, the density of the space charge trapped at the grain boundaries was &lt;0.2C/m², corresponding to a fraction of electron charge per unit cell. The proposed technique, while it lacks the ability to determine the thickness of the grain boundary core when much smaller than the Debye length, it can be used to distinguish between space charge vs insulating layer contributions to the grain boundary resistance.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"417 ","pages":"Article 116706"},"PeriodicalIF":3.0,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357885","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":"Enhancement in conductivity by K2O in MgO-V2O5 glass-ceramic for solid- state battery application","authors":"Vimi Dua,&nbsp;K. Singh","doi":"10.1016/j.ssi.2024.116707","DOIUrl":"10.1016/j.ssi.2024.116707","url":null,"abstract":"<div><div>Composition of 75V₂O₅-(25-x) MgO-(x) K₂O (x = 6, 9, 12, and 15 mol%) are synthesized by melt quench technique. All the as quenched samples either formed the glasses or glass ceramic as confirmed by differential scanning calorimeter (DSC) and X-ray diffraction (XRD). The DSC curves exhibited the two glass transition temperatures (T_g), two crystallization temperatures (T_c)_, and with two melting temperatures (T_m) which could be related to the presence of two distinct glass in the present samples. The K₂O content increases the devitrification tendency of as quenched samples and formed the crystalline phases i.e. K₃VO₄ along with glassy phase in higher concentration of K₂O. X-ray photoelectron spectroscopy (XPS) is confirmed that the vanadium exhibit two oxidation states V⁴⁺ / V⁵⁺. The highest ratio of V⁴⁺/V⁵⁺ is found in (x = 15) sample which exhibited the highest conductivity i.e. 1.3 × 10⁻³ S/cm at 250 °C. It is two orders higher than the (x = 6) sample at 250 °C. The high conducting glass ceramics can be used as cathode in all solid state battery and fuel cells.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"417 ","pages":"Article 116707"},"PeriodicalIF":3.0,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326966","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":"Crystal structure, electronic conductivity and oxygen exchange kinetics of high-entropy perovskites La0.2Pr0.2Nd0.2Sm0.2Sr0.2Co1-xFexO3-δ (x = 0, 0.5, 1)","authors":"Patrick Pretschuh,&nbsp;Andreas Egger,&nbsp;Edith Bucher","doi":"10.1016/j.ssi.2024.116705","DOIUrl":"10.1016/j.ssi.2024.116705","url":null,"abstract":"<div><div>High-entropy perovskites (HEPs) are attracting increasing attention as air electrode materials for solid oxide cells (SOCs). In this work, three different HEPs from the series La_0.2Pr_0.2Nd_0.2Sm_0.2Sr_0.2Co_1-xFe_xO_3-δ (x = 0, 0.5, 1) are synthesized using the citric acid-ethylenediaminetetraacetate (EDTA) method. X-ray diffraction analysis finds crystal structures with the orthorhombic space group 62 (<em>Pnma</em>) at room temperature. The lattice distortion increases with increased Fe-substitution at the B-site. The electrical conductivity (<em>σ</em>_e) is determined at temperatures from 600 to 850 °C and oxygen partial pressures (<em>p</em>O₂) between 0.001 and 0.15 bar. For the pure cobaltate, <em>σ</em>_e is 1469 S cm⁻¹ at 800 °C and 0.15 bar <em>p</em>O₂. The conductivity is significantly reduced with Fe-doping, reaching 87 S cm⁻¹ for the pure ferrate at 800 °C. The chemical oxygen surface exchange coefficient (<em>k</em>_chem) and the chemical oxygen diffusion coefficient (<em>D</em>_chem) are determined by the electrical conductivity relaxation technique. <em>D</em>_chem is found to be quite independent of B-site doping and <em>p</em>O₂, with values of approx. 5 × 10⁻⁶ cm² s⁻¹ at 800 °C. In contrast, <em>k</em>_chem is strongly influenced by the B-site composition, which results in an increase of more than one order of magnitude from the ferrate (3.4 × 10⁻⁵ cm s⁻¹) to the cobaltate (7.7 × 10⁻⁴ cm s⁻¹) at 800 °C and 0.001 bar <em>p</em>O₂. This clearly demonstrates the beneficial effects of Co on the electronic conductivity as well as on the catalytic activity for the oxygen surface exchange reaction.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"417 ","pages":"Article 116705"},"PeriodicalIF":3.0,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319467","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":"Quantitative assessment of enhanced performance of Ru-loaded direct ammonia proton ceramic fuel cells","authors":"Koki Kitabayashi ,&nbsp;Junji Hyodo ,&nbsp;Nai Shi ,&nbsp;Yoshihiro Yamazaki","doi":"10.1016/j.ssi.2024.116701","DOIUrl":"10.1016/j.ssi.2024.116701","url":null,"abstract":"<div><p>Liquid ammonia is an attractive candidate for use as a hydrogen carrier because of its high volumetric density. The successful development of direct ammonia proton-conducting ceramic fuel cells (PCFCs) operating at intermediate temperatures can be seamlessly integrated into the current infrastructure without the need for investing in hydrogen gas pipelines and storage facilities. However, the low power output of PCFCs using ammonia fuel hinders their practical applications. In this study, we systematically investigated the ammonia conversion ratio and rate, maximum power density, open-circuit voltage, and ohmic and polarization resistances of PCFCs (Ni-BaCe_0.7Zr_0.1Y_0.1Yb_0.1O_3−δ |BaCe_0.7Zr_0.1Y_0.1Yb_0.1O_3−δ| PrBaCo₂O_5+δ) for ammonia and hydrogen fuels at intermediate temperatures of 500–650 °C and quantitatively assessed the impact of Ru catalyst loading on the electrochemical performance of direct ammonia PCFC. Ru loading improved the maximum power density of the direct ammonia PCFC from 100 to 149 mWcm⁻² at 500 °C. Combined analysis of gas chromatography and AC impedance spectroscopy revealed that Ru catalysts improved the internal ammonia reforming rate by a factor of 1.9 at 500 °C and reduced polarization resistance by a factor of 1.4 at 500 °C. All results consistently support that the enhanced maximum power density of the direct ammonia PCFC is predominantly attributed to the improved electrochemical reaction kinetics at the electrode/electrolyte/gas interface.</p></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"417 ","pages":"Article 116701"},"PeriodicalIF":3.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142271362","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 and temperature dependence of the crystal structure of proton conductor BaZr0.1Ce0.7Y0.1Yb0.1O3-δ (BZCYYb1711) by combined neutron and X-ray diffraction","authors":"Lozane Hamze ,&nbsp;Emmanuelle Suard ,&nbsp;Olivier Joubert ,&nbsp;Eric Quarez","doi":"10.1016/j.ssi.2024.116682","DOIUrl":"10.1016/j.ssi.2024.116682","url":null,"abstract":"<div><p>BaZr_0.1Ce_0.7Y_0.1Yb_0.1O_3-δ is a widely studied proton conductor for solid oxide fuel cells but its structure has not been examined in detail. In this study, we synthesized a pure, well-crystallized BaZr_0.1Ce_0.7Y_0.1Yb_0.1O_3-δ powder via a glycine-nitrate process. Using Rietveld analysis on X-ray and neutron diffraction powder patterns collected both at room temperature and at elevated temperatures, we investigate the crystal structure of BaZr_0.1Ce_0.7Y_0.1Yb_0.1O_3-δ. At room temperature, the sample exhibits <em>I</em>4<em>/mcm</em> tetragonal symmetry, with cell parameters of a = 6.14911(7) Å and c = 8.87903(14) Å. The structure of BaZr_0.1Ce_0.7Y_0.1Yb_0.1O_3-δ can be described by a distortion of the ideal cubic perovskite (<em>a</em>_<em>p</em>), resulting from the cooperative tilt of the (Zr,Ce,Y,Yb)O₆ octahedra along the [001]_p axis (tilt system <em>a</em>⁰<em>a</em>⁰c⁻). Within the octahedra, it consists of a disordered arrangement of Zr, Ce, Y, and Yb atoms with an average distance (Zr,Ce,Y,Yb)-O of 2.219 Å. At around 650 °C, BaZr_0.1Ce_0.7Y_0.1Yb_0.1O_3-δ undergoes a phase transition to the primitive cubic structure <em>Pm</em><span><math><mover><mn>3</mn><mo>¯</mo></mover></math></span><em>m</em>. This transition is characterized by a progressive decrease in the tilt angle, indicating a continuous phase transition, and is tricritical in nature.</p><p>Crystallographic data for BaZr_0.1Ce_0.7Y_0.1Yb_0.1O_3-δ obtained from neutron data have been deposited at the Cambridge Crystallographic Data Centre, CSD 2341244 (room temperature) and CSD 2341246–2341252 (100 to 700 °C).</p></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"417 ","pages":"Article 116682"},"PeriodicalIF":3.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142271361","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}