Solid State Ionics最新文献

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Corrigendum to “Sodium hydrosulfide hydrate as sodium precursor for low-cost synthesis of Na3SbS4 ionic conductor” [Solid State Ionics 427 (2025) 116892] “氢硫化钠水合物作为低成本合成Na3SbS4离子导体的钠前体”[固态离子学]427(2025)116892的勘误表
IF 3.3 4区 材料科学
Solid State Ionics Pub Date : 2025-11-01 Epub Date: 2025-08-21 DOI: 10.1016/j.ssi.2025.116992
Pierre Gibot , Christine Surcin , Jean Noel Chotard
{"title":"Corrigendum to “Sodium hydrosulfide hydrate as sodium precursor for low-cost synthesis of Na3SbS4 ionic conductor” [Solid State Ionics 427 (2025) 116892]","authors":"Pierre Gibot , Christine Surcin , Jean Noel Chotard","doi":"10.1016/j.ssi.2025.116992","DOIUrl":"10.1016/j.ssi.2025.116992","url":null,"abstract":"","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"430 ","pages":"Article 116992"},"PeriodicalIF":3.3,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144885430","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
Dopant synergy vs. competition in codoped Li7La3Zr2O12 garnet solid electrolytes 共掺杂Li7La3Zr2O12石榴石固体电解质中掺杂剂的协同与竞争
IF 3.3 4区 材料科学
Solid State Ionics Pub Date : 2025-11-01 Epub Date: 2025-09-06 DOI: 10.1016/j.ssi.2025.117014
Ethan Anderson, Julie Cagnard, Rustam Z. Khaliullin, Eric McCalla
{"title":"Dopant synergy vs. competition in codoped Li7La3Zr2O12 garnet solid electrolytes","authors":"Ethan Anderson,&nbsp;Julie Cagnard,&nbsp;Rustam Z. Khaliullin,&nbsp;Eric McCalla","doi":"10.1016/j.ssi.2025.117014","DOIUrl":"10.1016/j.ssi.2025.117014","url":null,"abstract":"<div><div>LLZO is typically singly doped with Ga or Ta to reach ionic conductivities over 1 mS/cm, and some recent studies have examined the potential conductivity benefits of codoping the material. However, to date codoped LLZO fails to out-perform singly doped LLZO in terms of conductivity, and no study has sufficiently explored the consequences on other necessary properties. We have previously screened 59 possible single dopants to determine their impact on these properties. No single dopant addresses all requirements, thus, here we explore triple doping. We choose Ga for high ionic conductivity and low electronic conductivity, Dy for high voltage stability, and Ti for low voltage stability. The benefits and tradeoffs of codoping are determined with 64 samples spanning the triple doping space. We find fundamental limitations to codoping. The high ionic conductivity of Ga-doped LLZO is lowered by the addition of the other dopants, though this is mitigated partly by increased Ga levels. Electronic conductivity, by contrast, shows that a critical level of Ga is needed to obtain low conductivities, and this is resilient to the other dopants such that codoping is effective here. By contrast, the high voltage stability is systematically limited by the poor performance of Ga, and Dy is not effective in overcoming this, but Ti alone does help the low voltage stability of the Ga containing materials. These fundamental limitations suggest that multilayer designs will likely be required for viable solid batteries.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"431 ","pages":"Article 117014"},"PeriodicalIF":3.3,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005042","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
Effects of TiO2 on the performance of Li4Ti5O12 prepared by solid-state method TiO2对固态法制备Li4Ti5O12性能的影响
IF 3.3 4区 材料科学
Solid State Ionics Pub Date : 2025-11-01 Epub Date: 2025-10-06 DOI: 10.1016/j.ssi.2025.117036
Yin Zou, Litao Li , Yuxuan Zhang, Guiling Yang
{"title":"Effects of TiO2 on the performance of Li4Ti5O12 prepared by solid-state method","authors":"Yin Zou,&nbsp;Litao Li ,&nbsp;Yuxuan Zhang,&nbsp;Guiling Yang","doi":"10.1016/j.ssi.2025.117036","DOIUrl":"10.1016/j.ssi.2025.117036","url":null,"abstract":"<div><div>Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>-TiO<sub>2</sub> materials have been prepared in many literatures with either hydrothermal or sol-gel methods for higher performance. However, residual TiO<sub>2</sub> was considered as an impurity that could degrade the performance of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> prepared by solid-state reaction method. Therefore, in order to determine the true effect of residual TiO<sub>2</sub> on Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> in solid-state method preparation, Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>-TiO<sub>2</sub> composites with different TiO<sub>2</sub> content and TiO<sub>2</sub> crystal structures are synthesized in air and argon atmospheres. XRD results indicate that Li<sub>2</sub>CO<sub>3</sub> promotes the transition of anatase TiO<sub>2</sub> to rutile TiO<sub>2</sub>, and the phase transition rate of TiO<sub>2</sub> in argon atmosphere is higher than that in air atmosphere. SEM results show the presence of small particles in the L85-Ar sample, which are identified as TiO<sub>2</sub> by lattice fringes, elemental distribution, and electron diffraction in selected regions. In electrochemical tests, the initial discharge capacity and the low-rate capacity of the materials continuously decrease as the TiO<sub>2</sub> content increases. However, due to the abundant phase interfaces in the composite, the high-rate performance does not decline and the cycle performance improves. After 500 cycles at a rate of 10C, L85-Ar has a capacity retention of 85.4 %, which is a 22.7 % improvement over L105-Ar. Based on the EIS and CV results, the composite exhibits lower electrochemical impedance and higher peak current.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"431 ","pages":"Article 117036"},"PeriodicalIF":3.3,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145262985","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
Apparent non-monotonic electrical conductivity relaxation of 1 % Gd-doped ceria 1% gd掺杂二氧化铈的非单调电导率弛豫
IF 3.3 4区 材料科学
Solid State Ionics Pub Date : 2025-11-01 Epub Date: 2025-09-17 DOI: 10.1016/j.ssi.2025.117016
Yizhou Shen, Reidar Haugsrud
{"title":"Apparent non-monotonic electrical conductivity relaxation of 1 % Gd-doped ceria","authors":"Yizhou Shen,&nbsp;Reidar Haugsrud","doi":"10.1016/j.ssi.2025.117016","DOIUrl":"10.1016/j.ssi.2025.117016","url":null,"abstract":"<div><div>Steady-state and transient electrical conductivities of 1 % Gd-substituted ceria have been characterized from 550 to 800 °C under oxidizing conditions. The temperature and oxygen pressure dependencies of the steady-state conductivity resemble those of pristine ceria, with predominant n-type conductivity and some contribution of p-type conductivity under the most oxidizing conditions. Depending on temperature and oxygen partial pressure, the relaxation of the conductivity follows one-fold monotonic, two-fold monotonic, or non-monotonic behavior, despite the predominance of two charge carriers in the bulk material. Possible explanations for this peculiar phenomenon are discussed based on surface-exchange-limited oxygen exchange.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"431 ","pages":"Article 117016"},"PeriodicalIF":3.3,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107090","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
Composite anion exchange membranes based on poly(biphenyl piperidinium) / ZrO2 聚联苯哌啶/ ZrO2复合阴离子交换膜
IF 3.3 4区 材料科学
Solid State Ionics Pub Date : 2025-11-01 Epub Date: 2025-08-22 DOI: 10.1016/j.ssi.2025.116996
Alessandro Raffaele Ferrari, Diego Stucchi, Tommaso Caielli, Raziyeh Akbari, Ivan Claudio Pellini, Carlo Antonini, Piercarlo Mustarelli
{"title":"Composite anion exchange membranes based on poly(biphenyl piperidinium) / ZrO2","authors":"Alessandro Raffaele Ferrari,&nbsp;Diego Stucchi,&nbsp;Tommaso Caielli,&nbsp;Raziyeh Akbari,&nbsp;Ivan Claudio Pellini,&nbsp;Carlo Antonini,&nbsp;Piercarlo Mustarelli","doi":"10.1016/j.ssi.2025.116996","DOIUrl":"10.1016/j.ssi.2025.116996","url":null,"abstract":"<div><div>The main requirement for the development of Anion Exchange Membranes Fuel Cells (AEMFCs) and Water Electrolyzers (AEMFEs) on an industrial scale is the improvement of Anion Exchange Membranes performance. Besides good ionic conductivity, dimensional stability and mechanical properties in the wet state, the main challenge to be overcome is the improvement of AEMs chemical resistance in harsh alkaline environment. Poly(aryl piperidinium)s are among the most promising AEMs in terms of conductivity, mechanical properties, and chemical stability. Here we report the fabrication and physico-chemical characterization of composite AEMs based on poly(biphenyl piperidinium) (PBP) with the addition of zirconium oxide as a filler to improve membrane properties, including anionic conductivity, water uptake and alkali resistance. The optimal ZrO<sub>2</sub> filler content was found to be 5 wt% of dry polymer mass. Compared to plain PBP, composite membranes exhibit increased hydroxide conductivity (from 75 to 116 mS cm<sup>−1</sup> at 80 °C), reduced water uptake (from 427 % to 278 % at 80 °C) and swelling ratio (from 85 to 62 % at 80 °C), and a limited reduction (41 %) of cationic groups after ageing in KOH 1 M for 500 h at 80 °C. We demonstrate that ZrO<sub>2</sub> filler hinders Hoffman elimination reaction on the piperidinium ring.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"430 ","pages":"Article 116996"},"PeriodicalIF":3.3,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890524","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
Guide for characterizing polymeric electrolytes in rechargeable solid-state Li and Na batteries 可充电固态锂和钠电池中聚合物电解质的表征指南
IF 3.3 4区 材料科学
Solid State Ionics Pub Date : 2025-11-01 Epub Date: 2025-08-30 DOI: 10.1016/j.ssi.2025.116989
Miryam Fayena-Greenstein , Gayathri Peta , Hadas Alon-Yehezkel , Nagaprasad Reddy Samala , Ortal Breuer , Yuval Elias , Guoxiu Wang , Doron Aurbach
{"title":"Guide for characterizing polymeric electrolytes in rechargeable solid-state Li and Na batteries","authors":"Miryam Fayena-Greenstein ,&nbsp;Gayathri Peta ,&nbsp;Hadas Alon-Yehezkel ,&nbsp;Nagaprasad Reddy Samala ,&nbsp;Ortal Breuer ,&nbsp;Yuval Elias ,&nbsp;Guoxiu Wang ,&nbsp;Doron Aurbach","doi":"10.1016/j.ssi.2025.116989","DOIUrl":"10.1016/j.ssi.2025.116989","url":null,"abstract":"<div><div>Solid polymer electrolytes (SPEs) present a promising alternative for rechargeable batteries with aprotic liquids. Although SPEs were extensively researched for several decades, recent studies have gained momentum in response to growing demand for safer battery options. While various electrochemical and spectral methods for characterizing polymeric electrolytes were proposed, a comprehensive guide to support future investigations appears lacking. Here, we propose a working protocol to derive parameters that characterize SPEs as crucial components of battery systems. An overview of various methods is provided, with particular emphasis on simple impedance measurements for extracting electrochemical parameters. We underscore the significance of considering the interfaces within the battery, specifically the electrolyte-anode and electrolyte-cathode interfaces. <em>Post-mortem</em> analysis is discussed along with the challenges it entails. A summary table detailing the extracted parameters, the corresponding characterization methods, and their applications is provided.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"430 ","pages":"Article 116989"},"PeriodicalIF":3.3,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144916924","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
Exploring the structural and conductivity behaviours of mechanochemically and hydrothermally synthesized Ce3+-doped BaSnF4 solid electrolytes for all-solid-state fluoride-ion batteries 机械化学和水热合成Ce3+掺杂BaSnF4全固态氟离子电池固体电解质的结构和导电性研究
IF 3.3 4区 材料科学
Solid State Ionics Pub Date : 2025-11-01 Epub Date: 2025-09-23 DOI: 10.1016/j.ssi.2025.117032
K. Ramakrushna Achary , Sumit Khatua , Kshatri Durga Lalitha Bai , Guruprasad Sahoo , L.N. Patro
{"title":"Exploring the structural and conductivity behaviours of mechanochemically and hydrothermally synthesized Ce3+-doped BaSnF4 solid electrolytes for all-solid-state fluoride-ion batteries","authors":"K. Ramakrushna Achary ,&nbsp;Sumit Khatua ,&nbsp;Kshatri Durga Lalitha Bai ,&nbsp;Guruprasad Sahoo ,&nbsp;L.N. Patro","doi":"10.1016/j.ssi.2025.117032","DOIUrl":"10.1016/j.ssi.2025.117032","url":null,"abstract":"<div><div>Recent studies on batteries have drawn significant attention to all-solid-state fluoride-ion batteries (FIBs) as potential alternatives to the conventional Li-ion batteries because of their higher theoretical energy densities. On the solid electrolyte side, efforts are being made to develop a suitable material with improved ionic conductivity (∼ 10<sup>−3</sup> S/cm) and enhanced electrochemical stability. SnF<sub>2</sub>-based solid electrolyte, BaSnF<sub>4</sub> crystallizes in the PbSnF<sub>4</sub> structure and is frequently considered as a potential solid electrolyte for FIBs operating at room temperature (RT). In this study, the conductivity results of BaSnF<sub>4</sub> are influenced by doping with rare-earth ions (Ce<sup>3+</sup>) at different concentrations and by the synthesis methodology. The structural and transport behaviours of Ce<sup>3+</sup>-doped BaSnF<sub>4</sub> solid electrolytes, prepared by mechanical milling and hydrothermal methods, are compared. The formation of the doped materials, which exhibit a tetragonal phase, is confirmed by X-ray diffraction. The presence of Ce<sup>3+</sup> in the doped materials prepared by both methods is confirmed by their photoluminescence characteristics. Among the materials investigated in this study, 2 mol% Ce<sup>3+</sup>-doped BaSnF<sub>4</sub>, prepared by mechanical milling (Ba<sub>0.98</sub>Ce<sub>0.02</sub>SnF<sub>4.02</sub>-MM) exhibits the highest ionic conductivity and electrochemical stability. The conductivity (RT) exhibited by Ba<sub>0.98</sub>Ce<sub>0.02</sub>SnF<sub>4.02</sub>-MM is higher compared to earlier reports on different rare-earth ion-doped BaSnF<sub>4</sub>, which were primarily prepared by solution-based methods. Ion transport number measurement using <em>dc</em> polarization technique revealed that the conductivity exhibited by Ba<sub>0.98</sub>Ce<sub>0.02</sub>SnF<sub>4.02</sub>-MM is mainly due to ionic conduction. The observation of a higher ionic conductivity value in Ba<sub>0.98</sub>Ce<sub>0.02</sub>SnF<sub>4.02</sub>-MM highlights its great potential for use as a solid electrolyte in the fabrication of FIBs.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"431 ","pages":"Article 117032"},"PeriodicalIF":3.3,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119342","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
A mechanistic perspective of anion intercalation in graphite cathodes for dual-ion batteries 双离子电池负离子插入石墨负极的机理研究
IF 3.3 4区 材料科学
Solid State Ionics Pub Date : 2025-11-01 Epub Date: 2025-09-02 DOI: 10.1016/j.ssi.2025.117010
Zexin Su , Yuanyuan Yang , Yuchen Zhang , Zheng Chen , Pengxian Han , Jingwen Zhao , Guanglei Cui
{"title":"A mechanistic perspective of anion intercalation in graphite cathodes for dual-ion batteries","authors":"Zexin Su ,&nbsp;Yuanyuan Yang ,&nbsp;Yuchen Zhang ,&nbsp;Zheng Chen ,&nbsp;Pengxian Han ,&nbsp;Jingwen Zhao ,&nbsp;Guanglei Cui","doi":"10.1016/j.ssi.2025.117010","DOIUrl":"10.1016/j.ssi.2025.117010","url":null,"abstract":"<div><div>Graphite cathodes enable high-voltage dual-ion batteries (DIBs) through reversible anion intercalation. However, the molecular identity and dynamic evolution of intercalated anionic species, which critically govern the thermodynamic stability and electrochemical reversibility of this process, remain insufficiently understood. This Perspective synthesizes emerging evidence challenging the prevalent but oversimplified “naked anion” intercalation model, emphasizing how solvent co-intercalation potentially influences thermodynamic equilibria, interlayer anion transport kinetics, and charge storage mechanisms. The structural evolution of graphite during anion intercalation is also critically analyzed, with a focus on how interlayer spacing adjustments evolve during electrochemical cycling under solvent co-intercalation conditions. Furthermore, we present a systematic analysis of anion packing configurations within solvent-containing interlayers and their intrinsic link to theoretical capacity limits, offering new insights for optimizing intercalation efficiency. To advance the field, targeted research directions encompassing operando characterization of speciation dynamics, multiscale modeling of solvent co-intercalation pathways and mechanistic investigation into the origins of voltage hysteresis, are proposed to inform the rational design of next-generation high-performance DIB systems.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"430 ","pages":"Article 117010"},"PeriodicalIF":3.3,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926043","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
Synthesis and electrochemical performances of lithium-rich manganese-based oxides materials for next-generation batteries 下一代电池用富锂锰基氧化物材料的合成与电化学性能研究
IF 3.3 4区 材料科学
Solid State Ionics Pub Date : 2025-11-01 Epub Date: 2025-09-27 DOI: 10.1016/j.ssi.2025.117034
Fuliang Guo , Jieyun Zheng , Guogan Xu , Zhenyu Zhang , Ronggang Wang , Xingyu Chen , Liang Yin
{"title":"Synthesis and electrochemical performances of lithium-rich manganese-based oxides materials for next-generation batteries","authors":"Fuliang Guo ,&nbsp;Jieyun Zheng ,&nbsp;Guogan Xu ,&nbsp;Zhenyu Zhang ,&nbsp;Ronggang Wang ,&nbsp;Xingyu Chen ,&nbsp;Liang Yin","doi":"10.1016/j.ssi.2025.117034","DOIUrl":"10.1016/j.ssi.2025.117034","url":null,"abstract":"<div><div>Lithium-rich manganese-based oxides materials (LROs) have been extensively studied for next-generation lithium-ion batteries owing to their high capacity and low cost. However, challenges remain in addressing which pose significant barriers to achieving scalable manufacturing throughput, especially industrial-scale fabrication methodology. Herein, we explore the synthetic conditions including sintering temperature, lithium transition metal molar ratios (Li/TM) and sintering duration time to optimize electrochemical performances by using the Ni<sub>0.1625</sub>Co<sub>0.1625</sub><img>Mn<sub>0.6750</sub>CO<sub>3</sub> carbonate precursor. Results demonstrate that electrochemical performances are significantly affected by sintering temperatures and Li/TM ratios. LROs powders annealed at 350 °C for 2 h, 600 °C for 15 h and 900 °C for 2 h step by step under a Li/TM ratio of 1.35 achieved exceptional electrochemical performance: first discharge capacity of 287.12 mAh·g<sup>−1</sup> at 25 mA·g<sup>−1</sup> with a coulombic efficiency of 82.13 %, and retains 91.28 % of its capacity after 200 cycles at 250 mA·g<sup>−1</sup>. Moreover, this study elucidates the influence of sintering temperature, Li/TM ratios, and sintering duration time on the critical properties of LROs, including particle size, morphology, and phase composition, thereby offering a solid reference for scalable production.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"431 ","pages":"Article 117034"},"PeriodicalIF":3.3,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155822","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
Structure and electrochemical properties of MgAl co-doped spinel LiMn2O4 cathode material MgAl共掺尖晶石LiMn2O4正极材料的结构与电化学性能
IF 3.3 4区 材料科学
Solid State Ionics Pub Date : 2025-11-01 Epub Date: 2025-09-25 DOI: 10.1016/j.ssi.2025.117031
Yongsheng Yang PhD, Long Shi, Junming Guo
{"title":"Structure and electrochemical properties of MgAl co-doped spinel LiMn2O4 cathode material","authors":"Yongsheng Yang PhD,&nbsp;Long Shi,&nbsp;Junming Guo","doi":"10.1016/j.ssi.2025.117031","DOIUrl":"10.1016/j.ssi.2025.117031","url":null,"abstract":"<div><div>Mg<img>Al co-doping and single-crystal truncated octahedral morphology strategy was employed to suppress and mitigate the Jahn-Teller distortion and Mn dissolution in spinel-type LiMn<sub>2</sub>O<sub>4</sub> materials. LiMg<sub>0.10</sub>Al<sub><em>y</em></sub>Mn<sub>1.90-<em>y</em></sub>O<sub>4</sub> (<em>y</em> = 0.03, 0.05, 0.08, 0.10, and 0.12) cathode materials were synthesized via solid-phase combustion method and the effects of varying Al contents on the crystal structures, single-crystal truncated octahedral morphology, valence states of doped elements, rate and long-cycle electrochemical performance, and Li<sup>+</sup> ion migration kinetics of spinel-type LiMn<sub>2</sub>O<sub>4</sub> materials were investigated. The results indicate that Mg<img>Al co-doping promotes the crystalline development of spinel-type LiMn<sub>2</sub>O<sub>4</sub> material and the preferential growth of {111}, {100}, and {110} crystal planes, forming complete single-crystal truncated octahedral morphology. Among samples with different Mg and Al doping levels, the Mg<img>Al co-doped sample LiMg<sub>0.10</sub>Al<sub>0.05</sub>Mn<sub>1.85</sub>O<sub>4</sub> exhibits superior capacity and cycle stability. At a low rate of 1C, the initial discharge specific capacity is 114.7 mAh·g<sup>−1</sup>, with an 93.6 % capacity retention after 200 cycles; at high rates of 10, 15, and 20C, the initial discharge specific capacities are 94.4, 92.4, and 84.5 mAh·g<sup>−1</sup> respectively, with capacity retention rates of 84.1 %, 76.9.2 %, and 81.7 % after 1000 cycles; at high temperatures of 55 °C and rates of 1C, 5C and 10C, the initial discharge specific capacities are 113.7, 111.1 and 100.5 mAh·g<sup>−1</sup> respectively, with retention rates of 68.6 %, 46.1 % and 37.8 % after 200, and 500 cycles. The LiMg<sub>0.10</sub>Al<sub>0.05</sub>Mn<sub>185</sub>O<sub>4</sub> sample has the lowest charge transfer resistance (168.6 Ω) and apparent activation energy (32.39 kJ·mol<sup>−1</sup>), and the highest Li<sup>+</sup> diffusion coefficient (1.20 × 10<sup>−11</sup> cm<sup>2</sup>·s<sup>−1</sup>). This indicates that during charging and discharging, Li<sup>+</sup> ions in this sample encounter lower resistance and energy barriers, resulting in faster migration rates, which can enhance the material's rate capacity and cycling stability.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"431 ","pages":"Article 117031"},"PeriodicalIF":3.3,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155823","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
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