Solid State Ionics最新文献_第4页

Crossover from insulating into solid electrolyte behavior in bulk CaSO4⋅0.5H2O material due to ion exchange processes induced by high-temperature treatment with orthophosphoric acid 正磷酸高温处理诱导的离子交换过程导致大块CaSO4·0.5H2O材料从绝缘过渡到固体电解质行为

IF 3.3 4区材料科学

Solid State Ionics Pub Date : 2026-02-01 Epub Date: 2025-12-07 DOI: 10.1016/j.ssi.2025.117098

Ivan Nikulin, Tatiana Nikulicheva, Vitaly Vyazmin, Oleg Ivanov, Nikita Anosov, Olga Telpova

{"title":"Crossover from insulating into solid electrolyte behavior in bulk CaSO4⋅0.5H2O material due to ion exchange processes induced by high-temperature treatment with orthophosphoric acid","authors":"Ivan Nikulin, Tatiana Nikulicheva, Vitaly Vyazmin, Oleg Ivanov, Nikita Anosov, Olga Telpova","doi":"10.1016/j.ssi.2025.117098","DOIUrl":"10.1016/j.ssi.2025.117098","url":null,"abstract":"<div><div>CaSO<sub>4</sub>-based citrogypsum was used to prepare bulk samples of calcium sulfate hemihydrate (CaSO<sub>4</sub>·0.5H<sub>2</sub>O). To alter composition and improve conductivity, the samples were treated at 95 °C in 85 wt% orthophosphoric acid for 1 to 15 min. Within <1 min, CaSO<sub>4</sub>·0.5H<sub>2</sub>O transforms into CaSO<sub>4</sub>·2H<sub>2</sub>O. At longer times, partial dehydration converts part of the CaSO<sub>4</sub>·2H<sub>2</sub>O. back into CaSO<sub>4</sub>·0.5H<sub>2</sub>O, yielding a two-phase mixture. Acid treatment induces cation (2H<sup>+</sup> ↔ Ca<sup>2+</sup>) and anion ((HPO<sub>4</sub>)<sup>2−</sup> ↔ (SO<sub>4</sub>)<sup>2−</sup>) exchange, producing a transition from insulating to solid-electrolyte behavior. Weakly bound H<sup>+</sup> ions, incorporated either by Ca<sup>2+</sup> substitution or via (HPO<sub>4</sub>)<sup>2−</sup> residues, act as mobile charge carriers and enable proton conductivity. Residues that release protons convert to (PO<sub>4</sub>)<sup>3−</sup> groups, which can be displaced in an alternating field, generating ionic polarization and relaxation currents. The combined effects of H<sup>+</sup> mobility and (PO<sub>4</sub>)<sup>3−</sup> polarization produce two arcs in AC impedance spectra. Conductivity parameters extracted with the Cole model strongly depend on sample composition.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"434 ","pages":"Article 117098"},"PeriodicalIF":3.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748358","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}

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Influence of synthesis method on particles size of cesium dihydrogen phosphate for promising thin-film proton-conducting membranes CsH2PO4-p(VDF-HFP) 制备方法对CsH2PO4-p（VDF-HFP）质子导电薄膜磷酸二氢铯粒径的影响

IF 3.3 4区材料科学

Solid State Ionics Pub Date : 2026-02-01 Epub Date: 2025-12-13 DOI: 10.1016/j.ssi.2025.117102

Y.E. Kungurtsev, I.N. Bagryantseva, V.G. Ponomareva

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A hydration chamber for La-doped ceria ceramics with crystal hydrate-stabilized water vapor pressure 具有晶体水合稳定水蒸汽压的掺镧铈陶瓷水合室

IF 3.3 4区材料科学

Solid State Ionics Pub Date : 2026-02-01 Epub Date: 2025-12-08 DOI: 10.1016/j.ssi.2025.117084

Or Ben Zion , Isaac Abrahams , Ellen Wachtel , Xiao-Dong Zhang , Xin Guo , Igor Lubomirsky , David Ehre

{"title":"A hydration chamber for La-doped ceria ceramics with crystal hydrate-stabilized water vapor pressure","authors":"Or Ben Zion , Isaac Abrahams , Ellen Wachtel , Xiao-Dong Zhang , Xin Guo , Igor Lubomirsky , David Ehre","doi":"10.1016/j.ssi.2025.117084","DOIUrl":"10.1016/j.ssi.2025.117084","url":null,"abstract":"<div><div>Conventional methods for hydrating bulk ceramic samples at relatively low pressures (<5 atm of water steam) often fail to achieve significant hydration because of kinetic barriers and mechanical failures, the latter primarily due to inhomogeneous lattice expansion accompanying hydration. We propose a small, high-pressure chamber that can reach tens of atm of steam pressure without the necessity of operating a high-pressure/high temperature autoclave or pressure vessel. The chamber takes advantage of the dehydration of CoSO₄·7H₂O powder to stabilize water partial pressure up to 100 atm. This facilitates effective hydration at moderate temperatures, producing crack free pellets under reproducible conditions. Using La<sub>0.45</sub>Ce<sub>0.55</sub>O<sub>1.775</sub> ceramics (LCO45) as a test case, we demonstrate that hydration in the chamber with <span><math><msub><mi>P</mi><mrow><msub><mi>H</mi><mn>2</mn></msub><mi>O</mi></mrow></msub><mo>≈</mo><mn>56</mn></math></span> atm produces at least ten times more water incorporation than hydration with 1 atm steam (38.5 % vs 3.7 % of oxygen vacancies filled) at the same temperature, 673 K, while requiring approximately one-tenth of the time (5 h vs 48 h). X-ray powder diffraction reveals an expansion of 0.43 % in the fluorite lattice parameter of LCO45 ceramics hydrated in the chamber. Chamber hydration increased conductivity in the temperature range 383–463 K by ca. two orders of magnitude compared to the dry pellet, the increase attributable to proton conductivity. The hydration protocol described below does not allow independent setting of temperature and pressure; however, due to its simplicity and economic accessibility, it may provide a viable method for achieving a high degree of hydration in ceramic samples while, at the same time, preserving their mechanical integrity.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"434 ","pages":"Article 117084"},"PeriodicalIF":3.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748357","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}

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Conductivity of 2-adamantanone with lithium bis(trifluoromethanesulfonyl)imide: Impact of residual solvent and temperature 2-金刚烷酮与二（三氟甲烷磺酰）亚胺锂的电导率：残余溶剂和温度的影响

IF 3.3 4区材料科学

Solid State Ionics Pub Date : 2025-12-01 Epub Date: 2025-10-13 DOI: 10.1016/j.ssi.2025.117043

Joshua Budde, Ingo Bardenhagen, Julian Schwenzel

{"title":"Conductivity of 2-adamantanone with lithium bis(trifluoromethanesulfonyl)imide: Impact of residual solvent and temperature","authors":"Joshua Budde, Ingo Bardenhagen, Julian Schwenzel","doi":"10.1016/j.ssi.2025.117043","DOIUrl":"10.1016/j.ssi.2025.117043","url":null,"abstract":"<div><div>This study investigates the ionic conductivity of a mixture comprising 2-adamantanone and lithium bis(trifluoromethanesulfonyl)imide, with focus on the impact of temperature and residual tetrahydrofuran. Previous investigations have shown that the plastic crystal 2-adamantanone, when paired with lithium bis(trifluoromethanesulfonyl)imide, exhibits an ionic conductivity of 1.2 × 10<sup>−4</sup> S cm<sup>−1</sup> and a considerable oxidation potential of 5.1 V. Nonetheless, the influence of any residual processing solvent on the ionic conductivity is not yet fully understood. The Design of Experiments methodology was utilized to analyze a broad spectrum of potential compositions of 2-adamantanone, lithium bis(trifluoromethanesulfonyl)imide, and tetrahydrofuran. We measured the ionic conductivity of the samples using electrochemical impedance spectroscopy and conducted structural studies via differential scanning calorimetry, Fourier transform infrared spectroscopy, X-ray diffraction and solid-state NMR. Our findings indicate that the leftover amount of THF enhances ionic conductivity more strongly than the molarity. Moreover, compared to crystallization from the solvent, ionic conductivity increases by over an order of magnitude following recrystallization from the melt. We suggest that the residual solvent is integrated into the crystal structure of the 2-adamantanone, thereby increasing the free volume and facilitating lithium-ion transport. At elevated temperatures, the optimized formulation transforms from a solid to a wax-like consistency, functioning as a solid electrolyte with a high ionic conductivity of 2.6 × 10<sup>−4</sup> S cm<sup>−1</sup> at room temperature, making it a promising candidate for electrolyte applications.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"432 ","pages":"Article 117043"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322999","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}

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Insights into ion transport in polymer electrolytes: Classifications, models and mechanisms 聚合物电解质中离子传输的见解：分类、模型和机制

IF 3.3 4区材料科学

Solid State Ionics Pub Date : 2025-12-01 Epub Date: 2025-11-19 DOI: 10.1016/j.ssi.2025.117083

Maitri Patel , Kuldeep Mishra , J.J. Chaudhari , Vaishali Madhani , Jehova Jire L. Hmar , Ashwani Kumar , Neeladri Das , Deepak Kumar

{"title":"Insights into ion transport in polymer electrolytes: Classifications, models and mechanisms","authors":"Maitri Patel , Kuldeep Mishra , J.J. Chaudhari , Vaishali Madhani , Jehova Jire L. Hmar , Ashwani Kumar , Neeladri Das , Deepak Kumar","doi":"10.1016/j.ssi.2025.117083","DOIUrl":"10.1016/j.ssi.2025.117083","url":null,"abstract":"<div><div>Polymer-based electrolytes have emerged as the most viable component for various electrochemical applications, including batteries, fuel cells, and supercapacitors, due to their unique combination of properties, such as competitive ionic conductivity, a high electrochemical stability window, and superior adhesion at the electrolyte/electrode interface with mechanical flexibility. To obtain the most suitable electrolyte system, these electrolyte systems have undergone through various structural and compositional modifications. There are different classes of polymer electrolytes. Understanding the ion-transport mechanisms in these complex materials is essential for optimizing their performance. This study offers a thorough examination of several models suggested for ion conduction in polymer electrolytes. The classical approaches, such as the vehicular and segmental motion models, as well as more recent theories, including the Vogel-Tammann-Fulcher (VTF) model, dynamic bond percolation, and hopping mechanisms, are discussed in detail. Emphasis is given to the interplay between polymer segmental motion and ion transport, the role of ion–polymer interactions, the role of different fillers and plasticizers, and the influence of structural heterogeneity on conduction pathways. This work also highlights the strengths and limitations of the ion conduction models.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"433 ","pages":"Article 117083"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145578273","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}

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Understanding interfacial reactions and electrochemical performance of MoS2 cathodes with laponite-based solid polymer electrolytes 了解二硫化钼阴极与钙钛矿基固体聚合物电解质的界面反应和电化学性能

IF 3.3 4区材料科学

Solid State Ionics Pub Date : 2025-12-01 Epub Date: 2025-10-18 DOI: 10.1016/j.ssi.2025.117052

Sneha Mandal , Catherine Tom , Subbiah Alwarappan , Ravi Kumar Pujala , Surendra K. Martha , Vijayamohanan K. Pillai

{"title":"Understanding interfacial reactions and electrochemical performance of MoS2 cathodes with laponite-based solid polymer electrolytes","authors":"Sneha Mandal , Catherine Tom , Subbiah Alwarappan , Ravi Kumar Pujala , Surendra K. Martha , Vijayamohanan K. Pillai","doi":"10.1016/j.ssi.2025.117052","DOIUrl":"10.1016/j.ssi.2025.117052","url":null,"abstract":"<div><div>Solid-state batteries have recently attracted unprecedented interest as potentially safe and stable high-energy storage systems for niche applications. However, modulating the mobility of cations is a challenge, which limits the ionic conductivity and hinders further development of practical devices using these solid electrolytes. The electrode/electrolyte interface is critical in determining the ion transport mechanism, cycle life, and energy storage efficiency in secondary batteries. Here, we report some exciting results on a novel composite polymer electrolyte comprising laponite and nanocellulose, which expands the interlayer gap by ∼2 Å, facilitating a high transference number of 0.84, with a robust electrochemical stability window of 2.7–4.8 V with Na metal. Coupling this electrolyte with few-layer MoS<sub>2</sub> nanosheet cathodes exhibiting expansion along the (001) direction and in-plane compression, we demonstrate charge-discharge with an initial capacity of 17 mAh g<sup>−1</sup>. FT-IR and Raman analyses reveal hydroxyl groups of cellulose interfere with cathode interface stability, contributing to capacity degradation, while promoting robust anode interface formation. These findings elucidate interfacial reactions impacting performance and suggest that tailored electrode or electrolyte modifications could improve cycling stability in solid-state Na batteries employing laponite-based polymer electrolytes and MoS<sub>2</sub> cathodes.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"432 ","pages":"Article 117052"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322996","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}

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Dielectric and conductivity studies of Tb-doped zinc orthotitanate nanomaterials for next-generation electronics and energy storage 新一代电子和储能用掺杂tb的正钛酸锌纳米材料的介电和电导率研究

IF 3.3 4区材料科学

Solid State Ionics Pub Date : 2025-12-01 Epub Date: 2025-10-21 DOI: 10.1016/j.ssi.2025.117048

K.M. Girish , R. Lavanya , M.V. Hemantha Reddy , G.R. Rajath , B.N. Deepak Kumar , S.C. Prashantha

{"title":"Dielectric and conductivity studies of Tb-doped zinc orthotitanate nanomaterials for next-generation electronics and energy storage","authors":"K.M. Girish , R. Lavanya , M.V. Hemantha Reddy , G.R. Rajath , B.N. Deepak Kumar , S.C. Prashantha","doi":"10.1016/j.ssi.2025.117048","DOIUrl":"10.1016/j.ssi.2025.117048","url":null,"abstract":"<div><div>Zn<sub>2</sub>TiO<sub>4</sub> nanomaterials doped with Terbium were synthesized via a combustion route using oxalyl dihydrazide (ODH) as fuel. The crystalline nature and morphology were confirmed by Powder X-ray diffraction (PXRD), and Scanning Electron Microscopy (SEM) techniques. Optical studies and the nature of liberated organics were conducted through Diffuse Reflectance Spectroscopy (DRS), and Fourier Transform Infrared (FTIR)spectroscopy techniques. Conductivity and Dielectric studies were carried out for the prepared materials and optimized. Dielectric spectra revealed distinct relaxation behaviors at high and low frequencies. Highest dielectric constant was noticed for the 5 mol% Tb-doped Zn₂TiO₄ compared to other compositions. Dielectric plots exhibit a clear merging beyond a certain frequency, and their behavior changes significantly at higher frequencies which can be attributed to the release of space charge and the consequent reduction in the material's barrier properties. The frequency dependence of AC conductivity Tb<sup>3+</sup> (1–7 mol%): Zn<sub>2</sub>TiO<sub>4</sub> nanoparticles follows Jonscher's power law. All the results suggest that the Tb<sup>3+</sup>-doped Zn<sub>2</sub>TiO<sub>4</sub> material is potentially suitable for electronics and energy storage applications.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"432 ","pages":"Article 117048"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145360228","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}

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PEO/PLA-based high-temperature organic-inorganic composite solid electrolyte for all-solid-state graphite anode Lithium batteries 全固态石墨负极锂电池用PEO/ pla基高温有机无机复合固体电解质

IF 3.3 4区材料科学

Solid State Ionics Pub Date : 2025-12-01 Epub Date: 2025-10-24 DOI: 10.1016/j.ssi.2025.117055

Chunzhi Du , Ruitai Liu , Rui Zhou , Hao Wu , Zhiwei Sang , Yunteng Jiang

{"title":"PEO/PLA-based high-temperature organic-inorganic composite solid electrolyte for all-solid-state graphite anode Lithium batteries","authors":"Chunzhi Du , Ruitai Liu , Rui Zhou , Hao Wu , Zhiwei Sang , Yunteng Jiang","doi":"10.1016/j.ssi.2025.117055","DOIUrl":"10.1016/j.ssi.2025.117055","url":null,"abstract":"<div><div>As the cornerstone of next-generation energy storage technology characterized by high safety and high energy density, the development of all-solid-state lithium batteries relies critically on the advancement of high-performance composite solid electrolytes (CSEs). In this study, LATP inorganic fillers were incorporated into a PEO/PLA/LiTFSI matrix for the first time to fabricate a novel organic–inorganic composite solid electrolyte (CSE) membrane. Using this membrane, an all-solid-state graphite anode battery with an LFP│CSE│C (graphite) configuration was assembled. The CSE film containing 15 wt% LATP demonstrated superior overall performance, exhibiting a room-temperature ionic conductivity of 1.6 × 10<sup>−4</sup> S/cm. This represents an enhancement of approximately five orders of magnitude compared to the pure PEO/PLA/LiTFSI solid polymer electrolyte. At 60 °C, the ionic conductivity reached 9.6 × 10<sup>−2</sup> S/cm, reflecting a 600 % improvement over its room-temperature value. The electrolyte exhibited an electrochemical stability window of 4.8 V and an ion transference number of 0.7. After 100 cycles, the battery demonstrated excellent cycling durability at 0.2C and 60 °C, retaining 96.5 % of its initial capacity—a 10 % improvement in capacity retention—with a Coulombic efficiency of 99.56 %. The PEO/PLA/LiTFSI/LATP composite solid electrolyte (CSE) represents a promising flexible electrolyte system for all-solid-state lithium batteries, offering a viable strategy for advancing the development of current all-solid-state lithium batteries with graphite anodes.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"432 ","pages":"Article 117055"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145360231","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}

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Synthesis of LiFePO4 cathode materials from amorphous FePO4 precursor: Effects of Li/P molar ratio on crystal defect formation and electrochemical performance 非晶FePO4前驱体合成LiFePO4正极材料：Li/P摩尔比对晶体缺陷形成和电化学性能的影响

IF 3.3 4区材料科学

Solid State Ionics Pub Date : 2025-12-01 Epub Date: 2025-10-17 DOI: 10.1016/j.ssi.2025.117050

Yongsheng Chen , Siman Yang , Jianbin Zheng , Mingwei Hu , Mingdeng Wei , Peixun Xiong

{"title":"Synthesis of LiFePO4 cathode materials from amorphous FePO4 precursor: Effects of Li/P molar ratio on crystal defect formation and electrochemical performance","authors":"Yongsheng Chen , Siman Yang , Jianbin Zheng , Mingwei Hu , Mingdeng Wei , Peixun Xiong","doi":"10.1016/j.ssi.2025.117050","DOIUrl":"10.1016/j.ssi.2025.117050","url":null,"abstract":"<div><div>As an excellent cathode material, lithium iron phosphate (LiFePO<sub>4</sub>) has been widely used in commercial lithium-ion batteries (LIBs). However, the impact of synthetic conditions on LiFePO<sub>4</sub> cathode derived from amorphous iron phosphate (FePO<sub>4</sub>) remains underexplored. In the present study, the effects of Li/P molar ratio on the crystallinity and electrochemical properties of LiFePO<sub>4</sub> were investigated in detail using FePO<sub>4</sub> as a precursor. When the Li/P molar ratio in LiFePO<sub>4</sub> was approximately 1, the material exhibited an excellent long-term cycling stability with a high capacity retention of 97 % after 500 cycles. In addition, multiple characterizations demonstrate that the higher molar ratio of the Li/P resulted in the higher concentration of defects in LiFePO<sub>4</sub> crystals, which not only reduced the reversible capacity but also compromised the structural stability, leading to a poor cyclic stability and quick capacity degradation. Therefore, such a work could provide a scientific insight for rational design and synthesis of high-performance LiFePO<sub>4</sub> cathodes from amorphous FePO<sub>4</sub> precursor.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"432 ","pages":"Article 117050"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145323001","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}

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Bi-material cathodes based on O3-type NaNi1/3Fe1/3Mn1/3O2 and activated carbon for high-energy hybrid sodium ion battery capacitors 基于o3型NaNi1/3Fe1/3Mn1/3O2和活性炭的高能混合钠离子电池电容器双材料阴极

IF 3.3 4区材料科学

Solid State Ionics Pub Date : 2025-12-01 Epub Date: 2025-11-18 DOI: 10.1016/j.ssi.2025.117071

Hengheng Xia , Chongyang Yang , Zhongxun An , Yue-Ling Bai , Jiaqiang Xu

{"title":"Bi-material cathodes based on O3-type NaNi1/3Fe1/3Mn1/3O2 and activated carbon for high-energy hybrid sodium ion battery capacitors","authors":"Hengheng Xia , Chongyang Yang , Zhongxun An , Yue-Ling Bai , Jiaqiang Xu","doi":"10.1016/j.ssi.2025.117071","DOIUrl":"10.1016/j.ssi.2025.117071","url":null,"abstract":"<div><div>Hybrid sodium ion battery capacitor (SIBC) is a type of internal hybrid electrochemical energy storage device featuring a dual-energy storage mechanism, capable of delivering high energy and power densities. In this work, we have developed high-energy SIBCs using bi-material cathodes composed of NaNi<sub>1/3</sub>Fe<sub>1/3</sub>Mn<sub>1/3</sub>O<sub>2</sub> (NFM) and activated carbon (AC), paired with presodiation-free hard carbon anodes. NFM offers high capacity but suffers from poor conductivity and rate capability, whereas AC enhances kinetics but limits energy density. Through optimization of the AC/NFM mass ratio in commercial-scale pouch-type full cells, we demonstrate that a hybrid cathode with 9.1 wt% AC (R<sub>1/10</sub>) achieves optimal electrochemical performance. This design effectively balances battery-type (NFM) and capacitor-type (AC) materials, resulting in a significant reduction in electrode resistance from 19.4 mΩ to 10.8 mΩ, along with decreased interfacial film resistance and charge transfer resistance, thereby enhancing capacitive contribution. The R<sub>1/10</sub> SIBC delivers a high energy density of 161.3 Wh kg<sup>−1</sup> at 74.8 W kg<sup>−1</sup> and maintains 62.3 Wh kg<sup>−1</sup> at 11.8 kW kg<sup>−1</sup>, outperforming pure NFM cells. It also exhibits enhanced low-temperature performance with 38.0 % capacity retention at −20 °C (5C), superior cycling stability with 72.2 % capacity retention after 10,000 cycles at 10C, and minimal self-discharge at 60 °C (0.5 mV h<sup>−1</sup>). The synergy between AC and NFM mitigates polarization, accelerates reaction kinetics, and broadens the practical applicability of high-power energy storage systems.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"433 ","pages":"Article 117071"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145578272","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