Solid State Ionics最新文献

{"title":"A novel phosphorus-doped Ge3N4 powder as high-capacity anode materials for lithium-ion batteries","authors":"Yan Wu ,&nbsp;Jiachang Zhao ,&nbsp;Jiajun Chen ,&nbsp;Hongbin Zhao ,&nbsp;Xinxin Zhao","doi":"10.1016/j.ssi.2025.116964","DOIUrl":"10.1016/j.ssi.2025.116964","url":null,"abstract":"<div><div>In this paper, the effect of doping with phosphorus atoms (P atoms) on the electrochemical performance of Ge₃N₄ as anode materials for lithium-ion batteries (LIBs) is investigated. P-doped Ge₃N₄ (P-Ge₃N₄) is synthesized by an in-situ nitridation and phosphorization method utilizing urea and NaH₂PO₂·H₂O as nitrogen and phosphorus sources. The P-Ge₃N₄ material is systematically characterized and the effect of phosphorus doping on the structure of Ge₃N₄ is studied. The electrochemical performance of the P-Ge₃N₄ anode materials in LIBs is also tested. The results indicate that the presence of P atoms enhances the overall electronic conductivity. The first discharge capacity of P-Ge₃N₄ material is 1548.53 mAh g⁻¹, which is much higher than that of pure Ge₃N₄ (850.26 mAh g⁻¹), and P-Ge₃N₄ still maintains a higher reversible discharge capacity than Ge₃N₄ after 100 cycles. P-Ge₃N₄ exhibits superior rate capability compared to Ge₃N₄, maintaining higher discharge capacities at various current densities. Based on density functional theory (DFT) simulation and calculation, it is found that the band gap width decreased from 1.76 eV to 0.27 eV, indicating that P doping improves the conductivity of Ge₃N₄. This study establishes an effective phosphorus atom doping strategy by combining experimental characterization and theoretical calculations, showing how the introduction of P changes the crystal structure, electronic properties and electrochemicl performance of Ge₃N₄. It provides a new theoretical and experimental basis for the design and optimization of high-performance anode materials for LIBs.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"429 ","pages":"Article 116964"},"PeriodicalIF":3.0,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144611612","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":"LiMnO2 cathodes: Taming Jahn-Teller distortions via local symmetry engineering and multi-scale structural design","authors":"Boya Wang,&nbsp;Valentina A. Bocharova,&nbsp;Lin Gu","doi":"10.1016/j.ssi.2025.116954","DOIUrl":"10.1016/j.ssi.2025.116954","url":null,"abstract":"<div><div>As a high-efficiency energy storage device, lithium-ion batteries greatly benefit from performance optimization of cathode materials to enhance their overall capabilities. LiMnO₂, with its advantages such as high theoretical capacity, abundant manganese resources, environmental friendliness, and low cost, has emerged as a potential candidate to replace traditional LiCoO₂ and ternary cathode materials. However, its practical application still faces significant challenges, including thermodynamic instability leading to structural phase transitions, pronounced Jahn-Teller distortions, and manganese dissolution issues. This review focuses on these critical challenges, systematically discussing the development history and modification strategies of LiMnO₂. Approaches such as local symmetry engineering, interface engineering, doping modification, composite structure design, and high-pressure synthesis show great potential in improving the comprehensive performance of LiMnO₂. By integrating the latest research findings, we propose tailored strategies to design highly stable LiMnO₂. Future studies should further explore multi-scale structural modulation and dynamic phase transition mechanisms to facilitate the practical application of LiMnO₂ in high-energy-density lithium-ion batteries.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"429 ","pages":"Article 116954"},"PeriodicalIF":3.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604940","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":"Thermodynamics, local structure, and transport of protons in triple-conducing oxide, BaCo0.4Fe0.4Zr0.1Y0.1O3-δ (BCFZY4411)","authors":"Yewon Shin ,&nbsp;Michael D. Sanders ,&nbsp;Erica Truong ,&nbsp;Supriyo Majumder ,&nbsp;Bernadette Cladek ,&nbsp;Michael Walker ,&nbsp;Bright Ogbolu ,&nbsp;Rongfu Zhang ,&nbsp;Guennadi A. Evmenenko ,&nbsp;Yan-Yan Hu ,&nbsp;Michael J. Bedzyk ,&nbsp;Katharine Page ,&nbsp;Sossina M. Haile ,&nbsp;Ryan O'Hayre","doi":"10.1016/j.ssi.2025.116962","DOIUrl":"10.1016/j.ssi.2025.116962","url":null,"abstract":"<div><div>Triple-conducting oxides (TCOs) are an emerging class of mixed ionic and electronically conducting materials that show great promise for oxygen reduction/evolution (ORR/OER) electrocatalysis—primarily in high-temperature ceramic electrochemical cells— but also in aqueous alkaline environments. Their high activity is attributed, at least in part, to their ability to incorporate and transport three mobile charge carriers: protons, oxygen vacancies, and electron-holes. Despite their promise, fundamental studies of TCOs are challenging, as transport dynamics from three charge carriers cannot be fully disentangled via traditional electrical measurement techniques. Characterizing proton dynamics in TCOs is particularly difficult as protons are generally the minority carrier, and their conduction response is typically obscured by the oxygen vacancies and electron holes. Here, we demonstrate successful isolation of the proton behavior in an archetypal TCO, BaCo_0.4Fe_0.4Zr_0.1Y_0.1O_3-δ (BCFZY4411), using a combination of non-electrical techniques. We determine proton uptake and oxygen non-stoichiometry (<em>δ</em>) using thermogravimetric analysis (TGA). X-ray absorption near edge structure (XANES) and neutron diffraction (ND) are used to validate the oxidation state of Co and the <em>δ</em> values obtained through TGA. We apply ¹H solid-state magic-angle-spinning (MAS) nuclear magnetic resonance (NMR) to provide insights into local structure, dynamics, and proton kinetics. Finally, the proton transport properties are further quantified using tracer isotope exchange with time-of-flight secondary ion mass spectrometry (ToF-SIMS). Despite the very low proton concentrations in BCFZY4411 (&lt;0.2 % under most conditions), our analysis suggests that the oxygen reduction and evolution reactions are nevertheless limited by the oxygen ion kinetics (e.g., oxygen surface exchange) rather than the proton kinetics at the reduced operating temperatures (&lt;500 °C) that are targeted for electrochemical cell applications. These findings provide a comprehensive understanding of proton behavior in BCFZY4411 and pave the way for advancing the fundamental study of TCOs.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"429 ","pages":"Article 116962"},"PeriodicalIF":3.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604939","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":"Constructing none co-intercalation ether-based electrolytes for high-performance lithium-ion batteries","authors":"Xiangze Kong ,&nbsp;Zikang Hou ,&nbsp;Zhihong Xiao ,&nbsp;Ruirui Hao ,&nbsp;Zhipeng Xu ,&nbsp;Jing Yu ,&nbsp;Qingyin Zhang ,&nbsp;Zhiqiang Shi","doi":"10.1016/j.ssi.2025.116959","DOIUrl":"10.1016/j.ssi.2025.116959","url":null,"abstract":"<div><div>Lithium-ion batteries, as a new generation of high-energy-density storage devices, face limitations in low-temperature performance due to scientific challenges such as hindered Li⁺ transport kinetics, increased desolvation energy barriers, and risks of solid-liquid interface failure. To address these issues, this study developed a novel ether-based electrolyte formulation based on a weakly solvating strategy, which exhibits wide-temperature-range adaptability. This achievement was realized through interfacial optimization combined with solvation structure reconfiguration, enabling highly stable energy storage at low temperatures. Electrochemical data demonstrate that the Li||Gr (Graphite) half-cell assembled with this electrolyte delivers a high initial reversible discharge capacity of 359.2 mAh g⁻¹ at ambient temperature. It retains 90.52 % capacity after 200 cycles at 0.1 A g⁻¹ and maintains a reversible capacity of 240 mAh g⁻¹ even at −20 °C. A synergistic analysis of interfacial chemistry and bulk phase transport reveals excellent compatibility between the electrolyte and the graphite anode, along with the formation of a uniform and stable solid electrolyte interphase (SEI) film on the graphite surface. The unique solvation structure distribution significantly enhances ion diffusion kinetics and improves electrolyte conductivity.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"429 ","pages":"Article 116959"},"PeriodicalIF":3.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604928","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":"Contact mechanics and electrochemical properties of the Li6.5La3Zr1.5Ta0.5O12| Li2.25Zr0.75Fe0.25Cl6 hetero-electrolyte interface in a low-pressure regime","authors":"Max Palmer ,&nbsp;Lanting Qian ,&nbsp;Vipin K. Singh ,&nbsp;Leonardo Merola ,&nbsp;Eric Carlson ,&nbsp;Catherine Haslam ,&nbsp;Jürgen Janek ,&nbsp;Linda F. Nazar ,&nbsp;Jeff Sakamoto","doi":"10.1016/j.ssi.2025.116948","DOIUrl":"10.1016/j.ssi.2025.116948","url":null,"abstract":"<div><div>While there are numerous solid electrolytes (SE), not one simultaneously meets all the criteria to enable practical application of lithium (Li) metal solid-state batteries. The multilayer electrolyte configuration has garnered significant attention where one electrolyte is used in contact with the anode and another one as a catholyte, creating a hetero-electrolyte interface between the two SEs. Studies of hetero-electrolyte interfaces, especially at low pressures (&lt; 5 MPa), are limited. This work investigates the contact mechanics and interfacial resistance of the hetero-electrolyte interface between the high voltage stable halide Li_2.25Zr_0.75Fe_0.25Cl₆ (LZFC) and the oxide Li_6.5La₃Zr_1.5Ta_0.5O₁₂ (LLZTO), which is stable with Li. We report that the surface roughness of either SE strongly affects the LLZTO|LZFC interfacial resistance (<em>R</em>_int) below 5 MPa. By controlling the interface roughness, <em>R</em>_int was decreased by a factor of 5 – from 3280 Ωcm² to 648 Ωcm². We demonstrate that warm pressing of the LLZTO|LZFC interface at 80 °C promotes creep of the LZFC to assist in forming more contact at low pressures, such that <em>R</em>_int decreased by 50 %. Furthermore, acid washing the LLZTO with HCl or H₃PO₄ imparts additional roughness by 2-6× and leads to an interfacial instability between HCl treated LLZTO and LZFC. Nevertheless, after warm pressing, a LLZTO|LZFC|LLZTO symmetric cell was cycled for 50 cycles, passing 1 mAh/cm² of charge per half cycle with no increase in resistance regardless of the LLZTO surface treatment, indicating a passivated LLZTO|LZFC interface. This work provides insight into the design and construction of multilayer SSBs at low stack pressures.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"428 ","pages":"Article 116948"},"PeriodicalIF":3.0,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579727","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":"Relationship between structure and room-temperature charge transport in highly acceptor-doped ceria and zirconia","authors":"P. Mowe ,&nbsp;F. Pfeiffer ,&nbsp;O. Maus ,&nbsp;W.G. Zeier ,&nbsp;M. Winter ,&nbsp;K. Neuhaus","doi":"10.1016/j.ssi.2025.116955","DOIUrl":"10.1016/j.ssi.2025.116955","url":null,"abstract":"<div><div>Even though mainly known for intermediate to high temperature applications, highly acceptor doped ceria and zirconia are potential candidates for use as proton conductive membranes or for electro-chemo-X devices, which requires comparably high ionic conductivity at room temperature. In this study, the composition La₂Ce₂O₇, Y₂Zr₂O₇ and La₂Zr₂O₇ were prepared via Pechini synthesis, followed by calcination, pellet pressing and sintering. The received pellets were characterized by X-ray diffraction (XRD), X-ray pair distribution function analyses (XPDF), and Raman spectroscopy showing La₂Zr₂O₇ as a pyrochlore, a global fluorite structure in Y₂Zr₂O₇ and La₂Ce₂O₇ as defective pyrochlore structure with local disorder. The investigation of electrical properties using classical electrochemical methods, such as electrochemical impedance spectroscopy (EIS), is constrained by very low electrical conductivity at room temperature for the investigated ceramics. To enable measurements at room temperature, and with a focus on the surface-near transport properties, a combination of Kelvin Probe Force Microscopy (KPFM) and local polarization-relaxation measurements has been employed in this study.</div><div>The application of KPFM-based polarization-relaxation measurements enabled the successful determination of diffusion coefficients in both dry and wet environments by employing positive or negative polarization voltages with highest values for the defective pyrochlore La₂Ce₂O₇. Additionally, KPFM measurements were used to analyze the local potential distribution at the grain boundaries. The results are discussed in the context of a defect model.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"428 ","pages":"Article 116955"},"PeriodicalIF":3.0,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579726","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":"Cation disorder and lithium conductivity in mechanochemically synthesized chloride solid electrolytes","authors":"Raül Artal ,&nbsp;Henrik Lyder Andersen ,&nbsp;Rafael Del Olmo ,&nbsp;Irune Villaluenga ,&nbsp;Isabel Sobrados ,&nbsp;Virginia Diez-Gómez ,&nbsp;Javier Gainza ,&nbsp;María Teresa Fernández-Diaz ,&nbsp;José Antonio Alonso ,&nbsp;Ricardo Jimenez ,&nbsp;Ainara Aguadero","doi":"10.1016/j.ssi.2025.116952","DOIUrl":"10.1016/j.ssi.2025.116952","url":null,"abstract":"<div><div>Developing fast, stable, and scalable Li conductors is crucial for advancing all-solid-state batteries (ASSBs). Here, we present a rapid, one-hour mechanochemical synthesis of chloride electrolytes Li₂B_xCl₄ (B = Zn, Mg, Zr and x = 1 and 2/3) <em>via</em> high-energy ball milling (HEBM), achieving the targeted spinel phase without the need for any annealing steps. In Li₂ZnCl₄ electrochemical impedance spectroscopy reveals an unexpected, reversible low-temperature ionic transition at ∼75 °C, leading to a dramatic increase in total Li⁺ conductivity, from 2.95·10⁻⁹ S·cm⁻¹ at 25 °C to an extrapolated room temperature conductivity of 3.24·10⁻⁵ S·cm⁻¹ following heating to 125 °C. To elucidate the structural origins of this transition, we employ neutron powder diffraction (NPD), variable-temperature powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC), and ⁶Li MAS NMR spectroscopy. We explore the stabilization of the high conducting phase <em>via</em> the introduction of host cation vacancies and therefore increasing the Li/B ratio based on the spinel-related compounds, Li₂Zn_1/3Zr_1/3Cl₄ and Li₂Mg_1/3Zr_1/3Cl₄, synthesized <em>via</em> the same one-hour mechanochemical approach. Rietveld refinement of NPD data reveals a monoclinic lattice distortion and cation disorder in both compounds, which open new Li conduction pathways. In both materials, 2–4 orders of magnitude increase of conductivity is achieved by aliovalent Zr⁴⁺-substitution compared to the undoped counterparts Li₂ZnCl₄ and Li₂MgCl₄, leading to maximum bulk conductivities up to 10⁻⁴ S·cm⁻¹ at room temperature. Notably, the investigated chloride-based solid electrolytes consist of non-critical elements and exhibit high thermal stability up to at least 190 °C which can be key for easy scalable processing. These results highlight the potential of spinel-based chloride electrolytes as candidates for next-generation solid-state battery applications, combining rapid and scalable synthesis with promising ionic transport properties.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"428 ","pages":"Article 116952"},"PeriodicalIF":3.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144572787","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":"Kinetic Monte Carlo simulation of proton conductivity in Y-doped barium cerate","authors":"Giulia Winterhoff ,&nbsp;Steffen Neitzel-Grieshammer","doi":"10.1016/j.ssi.2025.116953","DOIUrl":"10.1016/j.ssi.2025.116953","url":null,"abstract":"<div><div>Barium cerate provides high protonic conductivity when doped with trivalent ions such as yttrium. Insights into the details of proton migration can be obtained by density functional theory, providing information about proton-dopant interactions and migration barriers. In this work, we give a summarizing overview of calculated energy parameters from the literature. These parameters are applied in kinetic Monte Carlo simulations to estimate the activation energy of proton conduction in Y-doped barium cerate. While the simulated values are lower than the experimental values, they are close to previously reported simulation results on Gd-doped barium cerate.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"428 ","pages":"Article 116953"},"PeriodicalIF":3.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144572786","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 lithium ions on the dielectric relaxation properties of a Nafion ionomer membrane","authors":"S.D. Chernyuk ,&nbsp;A.P. Safronov ,&nbsp;O.V. Bushkova","doi":"10.1016/j.ssi.2025.116960","DOIUrl":"10.1016/j.ssi.2025.116960","url":null,"abstract":"<div><div>The relaxation properties of Nafion 212 membranes in both their protonated (H-Nafion) and lithiated (Li-Nafion) forms were investigated over a wide temperature range from −80 to 100 °C using dielectric spectroscopy. The replacement of protons with lithium ions was shown to displace the principal relaxation maximum by almost three decades toward lower frequencies to raise its activation energy from 4 to 61 kJ/mol. This signals stronger Li⁺–SO₃⁻ electrostatic coupling and the onset of a cooperative side-chain process that endures up to 100 °C, where it merges with the segmental relaxation of the polymer matrix. Although both membranes share virtually identical activation barriers for ion transport in the glassy region, Li-Nafion remains one to two orders of magnitude more conductive due to the suppression of the protonic Grotthuss mechanism as a result of deep drying, which nevertheless leaves the population of mobile Li⁺ carriers intact. The present quantitative benchmarks, which illuminate the decisive role of counter-ion identity in governing dipolar dynamics and ionic mobility, can inform the optimisation of perfluorosulfonic membranes as lithium-selective solid electrolytes and separators for advanced electrochemical devices.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"428 ","pages":"Article 116960"},"PeriodicalIF":3.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579728","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":"High specific capacity O3-NaNi₁/₃Fe₁/₃Mn₁/₃O₂ cathode material for sodium-ion batteries","authors":"Jiatai Wang ,&nbsp;Hongyun Liu ,&nbsp;Yan Tan ,&nbsp;Chao Fan ,&nbsp;Yuanyuan Li ,&nbsp;Jiting Li ,&nbsp;Xuchao Zhang ,&nbsp;Yansheng Rong ,&nbsp;Jian Li","doi":"10.1016/j.ssi.2025.116958","DOIUrl":"10.1016/j.ssi.2025.116958","url":null,"abstract":"<div><div>Sodium-ion batteries (SIBs) have emerged as a promising alternative to lithium-ion batteries (LIBs) due to the abundance of sodium resources and lower material costs. O3-type layered oxides, particularly nickel‑manganese-based materials have a stable crystal structure. The preparation method of sodium-ion battery cathode materials is particularly crucial for their electrochemical performance. The conventional coprecipitation method imposes relatively stringent requirements regarding the concentrations of precipitants and complexing agents, as well as the inflow rate and pH control. Herein, the precursor of NaNi_1/3Fe_1/3Mn_1/3O₂ is prepared by the homogeneous co-precipitation, and the di-n-butylamine is used as the precipitant. Then O3-type NaNi₁_/₃Fe₁_/₃Mn₁_/₃O₂ cathode material is obtained at calcination temperatures ranging from 800 °C to 900 °C. The sample calcined at 850 °C, exhibits lower Mn³⁺ content, which effectively suppresses the Jahn-Teller effect. Electrochemical tests demonstrates that at 0.1C and 1.5–4.3 V the initial discharge capacity of NNFM-850 is 155.11 mAh/g. The initial discharge capacity of NNFM-850 at 1C is 105.09 mAh/g and retained 79.35 % capacity after 100 cycles.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"428 ","pages":"Article 116958"},"PeriodicalIF":3.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144550058","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}