N.N.A. Hafidz , N.M. Ghazali , N.F. Mazuki , M. Diantoro , Y. Nagao , A.S. Samsudin
{"title":"Graphene oxide-enhanced alginate-PVA biopolymer electrolytes with improved proton conductivity and electrochemical stability for supercapacitor applications","authors":"N.N.A. Hafidz , N.M. Ghazali , N.F. Mazuki , M. Diantoro , Y. Nagao , A.S. Samsudin","doi":"10.1016/j.ssi.2025.116956","DOIUrl":"10.1016/j.ssi.2025.116956","url":null,"abstract":"<div><div>This study explores the effect of graphene oxide (GO) incorporation on the structural and electrochemical properties of alginate–poly(vinyl alcohol) (PVA) polymer electrolytes doped with ammonium nitrate (NH₄NO₃) for supercapacitor applications. FTIR analysis revealed specific molecular interactions between graphene oxide (GO) and the polymer host, while XRD results confirmed the enhanced amorphous nature of the composite. At 2 wt.% GO loading, the system exhibited peak ionic conductivity of 1.07 × 10<sup>−3</sup> S cm<sup>−1</sup> at room temperature, with a high ionic transference number (tₙ ≈ 0.98) and an extended electrochemical stability window of 2.85 V. Symmetric supercapacitors fabricated with these electrolytes achieved a specific capacitance of 240.78 F g<sup>−1</sup>, an energy density of 131 Wh kg<sup>−1</sup>, and long-term cycling stability up to 10,000 cycles. These results demonstrate that GO-induced structural modulation significantly enhances proton transport and electrochemical performance, offering a promising biopolymer-based platform for next-generation energy storage devices.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"429 ","pages":"Article 116956"},"PeriodicalIF":3.0,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656006","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}
Yang Yang , Wensun Zhu , Shoumeng Yang , Congcong Liu , Yu Yao , Xianhong Rui , Yan Yu
{"title":"Fast-charging Na4Fe3(PO4)2P2O7 cathode for sodium-ion batteries","authors":"Yang Yang , Wensun Zhu , Shoumeng Yang , Congcong Liu , Yu Yao , Xianhong Rui , Yan Yu","doi":"10.1016/j.ssi.2025.116963","DOIUrl":"10.1016/j.ssi.2025.116963","url":null,"abstract":"<div><div>Developing fast-charging secondary batteries is a key strategy to enhance the utilization of renewable energy sources and achieve global carbon neutrality. Based on the intrinsic properties of sodium and its resource advantages, sodium-ion batteries hold promising prospects in this field. As a crucial component of batteries, efficient cathode materials are vital for the realization of fast-charging technology. Na<sub>4</sub>Fe<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>P<sub>2</sub>O<sub>7</sub>, as a high-performance polyanionic cathode material, shows great potential for fast-charging and warrants further research. However, its practical application is still hindered by intrinsically low electronic conductivity, sluggish Na<sup>+</sup> diffusion kinetics, and the formation of undesired impurity phases during synthesis. The current research status and modification strategies for fast-charging Na<sub>4</sub>Fe<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>P<sub>2</sub>O<sub>7</sub> cathodes mainly focus on three aspects: surface and morphology modification, active component modulation, and inhibition of impurity generation. This review provides a summary of these approaches, aiming to offer insights into the rational design and further development of NFPP as a fast-charging cathode for sodium-ion batteries.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"429 ","pages":"Article 116963"},"PeriodicalIF":3.0,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633135","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}
Claudia Kofahl , Lars Dörrer , Steffen Ganschow , Hendrik Wulfmeier , Holger Fritze , Harald Schmidt
{"title":"Hydrogen and lithium tracer diffusivities as a function of hydrogen concentration in Li(Nb,Ta)O3 single crystals","authors":"Claudia Kofahl , Lars Dörrer , Steffen Ganschow , Hendrik Wulfmeier , Holger Fritze , Harald Schmidt","doi":"10.1016/j.ssi.2025.116968","DOIUrl":"10.1016/j.ssi.2025.116968","url":null,"abstract":"<div><div>For LiNb<sub>1-x</sub>Ta<sub>x</sub>O<sub>3</sub> single crystals, the ion diffusivities of the species Li and H (as an impurity) have strong influence on the overall conductivity at temperatures below 600 °C. We investigated the diffusion of H and Li in LiNbO<sub>3</sub>, LiTaO<sub>3</sub>, and LiNb<sub>0.15</sub>Ta<sub>0.85</sub>O<sub>3</sub> single crystals as a function of H concentration over two order of magnitude at 510 °C. The hydrogen diffusion experiments were realized by isotope exchange of deuterium (D) and hydrogen (H) in a gaseous D<sub>2</sub>O atmosphere and infra-red spectroscopy. The lithium diffusion experiments were done by <sup>6</sup>Li/<sup>7</sup>Li tracer exchange and Secondary Ion Mass Spectrometry. The diffusivities of both types of species decrease only slightly with increasing hydrogen concentration between 5 × 10<sup>16</sup> cm<sup>−3</sup> and 3 × 10<sup>18</sup> cm<sup>−3</sup> by a maximum factor of two to three for each type of diffusor. We suggest that the increased incorporation of hydrogen up to a concentration of about 3 × 10<sup>18</sup> cm<sup>−3</sup> into the lattice modifies only very slightly the migration of both species.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"429 ","pages":"Article 116968"},"PeriodicalIF":3.0,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144631206","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}
Yu Pan , Yuanjie Cai , Jiaojiao Zhan , linlin Wang , Shaojin Jia
{"title":"Application of high-performance lithium-ion batteries with dual-layer separators composed of electron beam irradiated PVDF-HFP/PMMA/AlO(OH) and PVDF-CTFE/PEO/LiTFSI/AlO(OH) in fast charging and discharging","authors":"Yu Pan , Yuanjie Cai , Jiaojiao Zhan , linlin Wang , Shaojin Jia","doi":"10.1016/j.ssi.2025.116969","DOIUrl":"10.1016/j.ssi.2025.116969","url":null,"abstract":"<div><div>With the rapid advancement of battery technologies, the demand for high-performance lithium-ion batteries (LIBs) has surged, particularly in fast-charging applications. This has driven the exploration of advanced materials to overcome the limitations of commercial separators. In this study, we present a pioneering approach: a dual-layer composite separator comprising Poly(vinylidene fluoride-<em>co</em>-hexafluoropropylene)/ Poly(methyl methacrylate)/ Aluminum oxyhydroxide and Poly(vinylidene fluoride-<em>co</em>-chlorotrifluoroethylene)/ Poly(ethylene oxide)/ Lithium bis(trifluoromethanesulfonyl)imide/ Aluminum oxyhydroxide (PVDF-HFP/PMMA/AlO(OH) and PVDF-CTFE/PEO/LiTFSI/AlO(OH)), modified via electron beam irradiation at varying doses to enhance separator performance, especially in mitigating rapid capacity degradation under fast-charging conditions. Electron beam irradiation induces cross-linking to enhance the material's mechanical strength, chemical stability and thermal stability without compromising its inherent polymer structure. Radiation triggers free radicals, allowing polymers to crosslink at room temperature and preventing membrane deformation. Due to the absence of initiators, the electrical and electrochemical properties of the system are not affected. This constitutes its primary advantage over alternative cross-linking approaches, which typically compromise structural integrity through chemical additives or thermal degradation. The most significant feature of this dual-layer separator is its ability to effectively address interfacial compatibility issues between the cathode and anode. Compared to commercial polypropylene (PP) separators, the dual-layer separator exhibits superior thermal stability, porosity (71 %), electrolyte wettability (421 % uptake), ionic conductivity (1.42 mS cm<sup>−1</sup>) and electrochemical performance. The optimal formulation, containing 12 wt% boehmite nanoparticles and irradiated at 160 kGy, demonstrated exceptional cycling stability. At a current density of 10C, the battery retained 94.1 % of its initial discharge capacity (108.9 mAh g<sup>−1</sup>) after 1000 cycles. Even under extreme fast-charging conditions (10C and 15C), the separator maintained >90 % and > 80 % capacity retention after 1000 and 1500 cycles, respectively. These results highlight the dual-layer separator's ability to sustain high energy density while addressing capacity fade, offering a viable pathway for commercializing fast-charging LIBs. The synergistic effects of boehmite-enhanced interfacial compatibility and radiation-induced crosslinking provide a robust framework for next-generation battery separators.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"429 ","pages":"Article 116969"},"PeriodicalIF":3.0,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144631205","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}
Nicolas Osenciat, Erica D. Clinton, Joel Casella, Alessia Romio, André Müller, Evgeniia Gilshtein, Moritz H. Futscher, Yaroslav E. Romanyuk
{"title":"Fast magnetron sputtering of LiPON from carbon-doped Li3PO4 target","authors":"Nicolas Osenciat, Erica D. Clinton, Joel Casella, Alessia Romio, André Müller, Evgeniia Gilshtein, Moritz H. Futscher, Yaroslav E. Romanyuk","doi":"10.1016/j.ssi.2025.116957","DOIUrl":"10.1016/j.ssi.2025.116957","url":null,"abstract":"<div><div>Thin layers of lithium phosphorus oxynitride (LiPON) have been deposited by RF and DC magnetron sputtering from a conductive carbon-doped Li<sub>3</sub>PO<sub>4</sub> ceramic target. We investigate the deposition rate, composition, morphology, and electrochemical properties of sputtered LiPON solid-state electrolyte layers. It is possible to increase the deposition rate in RF and DC modes by a factor of four to ten compared to the reference RF sputtering from the undoped target. X-ray photoelectron spectroscopy did not detect residual carbon impurities in as-deposited LiPON. The layers exhibit comparable electrochemical properties and ionic conductivity in the range of 2–5 · 10<sup><em>−</em>7</sup> <em>S/cm</em>, which can be further improved when co-sputtering with Li<sub>2</sub>O. The 300-nm-thin RF-co-sputtered LiPON solid separator has been integrated into a thin-film battery with a Li-metal anode, which showed negligible degradation after 190 cycles.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"429 ","pages":"Article 116957"},"PeriodicalIF":3.0,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144631204","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":"Sulfur-tolerance variation in intermediate-temperature sulfur La0.7Sr0.3V oxide anode catalyst in hydrogen atmosphere","authors":"T.M. Sebastian , T.E. Burye","doi":"10.1016/j.ssi.2025.116961","DOIUrl":"10.1016/j.ssi.2025.116961","url":null,"abstract":"<div><div>As SOFC technologies migrate to lower temperature operation to resolve physical degradation issues, the development catalysts materials with greater sulfur tolerance are being explored to resolve issues of chemical degradation related to sulfur poisoning. In this study, a previously reported, high temperature, sulfur tolerant SOFC catalyst, La<sub>0.7</sub>Sr<sub>0.3</sub>VO<sub>3.86-⸹</sub> (LSV), was further experimentally investigated via X-ray Diffraction, Scanning Electron Microscopy and Energy Dispersive Spectroscopy for its sulfur tolerance at currently targeted SOFC intermediate operating temperatures (400–700 °C) in hydrogen sulfide concentrations between 30 ppm–300 ppm, balance hydrogen gas up to 100 hr. LSVs sulfur tolerance varied with operating temperature and H<sub>2</sub>S concentration with the lowest sulfur adsorption rates occurring between 500 and 700 °C and is attributed to LSVs cubic structure and vanadium's V3+ oxidation state. At temperatures between 400 and 500 °C LSV shows decreased tolerance which is attributed to its monoclinic/tetragonal crystal structure and vanadium's V5+ oxidation state.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"429 ","pages":"Article 116961"},"PeriodicalIF":3.0,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144611714","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 novel phosphorus-doped Ge3N4 powder as high-capacity anode materials for lithium-ion batteries","authors":"Yan Wu , Jiachang Zhao , Jiajun Chen , Hongbin Zhao , 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 Ge<sub>3</sub>N<sub>4</sub> as anode materials for lithium-ion batteries (LIBs) is investigated. P-doped Ge<sub>3</sub>N<sub>4</sub> (P-Ge<sub>3</sub>N<sub>4</sub>) is synthesized by an in-situ nitridation and phosphorization method utilizing urea and NaH<sub>2</sub>PO<sub>2</sub>·H<sub>2</sub>O as nitrogen and phosphorus sources. The P-Ge<sub>3</sub>N<sub>4</sub> material is systematically characterized and the effect of phosphorus doping on the structure of Ge<sub>3</sub>N<sub>4</sub> is studied. The electrochemical performance of the P-Ge<sub>3</sub>N<sub>4</sub> 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-Ge<sub>3</sub>N<sub>4</sub> material is 1548.53 mAh g<sup>−1</sup>, which is much higher than that of pure Ge<sub>3</sub>N<sub>4</sub> (850.26 mAh g<sup>−1</sup>), and P-Ge<sub>3</sub>N<sub>4</sub> still maintains a higher reversible discharge capacity than Ge<sub>3</sub>N<sub>4</sub> after 100 cycles. P-Ge<sub>3</sub>N<sub>4</sub> exhibits superior rate capability compared to Ge<sub>3</sub>N<sub>4</sub>, 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 Ge<sub>3</sub>N<sub>4</sub>. 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 Ge<sub>3</sub>N<sub>4</sub>. 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, Valentina A. Bocharova, 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. LiMnO<sub>2</sub>, 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 LiCoO<sub>2</sub> 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 LiMnO<sub>2</sub>. 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 LiMnO<sub>2</sub>. By integrating the latest research findings, we propose tailored strategies to design highly stable LiMnO<sub>2</sub>. Future studies should further explore multi-scale structural modulation and dynamic phase transition mechanisms to facilitate the practical application of LiMnO<sub>2</sub> 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}
Yewon Shin , Michael D. Sanders , Erica Truong , Supriyo Majumder , Bernadette Cladek , Michael Walker , Bright Ogbolu , Rongfu Zhang , Guennadi A. Evmenenko , Yan-Yan Hu , Michael J. Bedzyk , Katharine Page , Sossina M. Haile , Ryan O'Hayre
{"title":"Thermodynamics, local structure, and transport of protons in triple-conducing oxide, BaCo0.4Fe0.4Zr0.1Y0.1O3-δ (BCFZY4411)","authors":"Yewon Shin , Michael D. Sanders , Erica Truong , Supriyo Majumder , Bernadette Cladek , Michael Walker , Bright Ogbolu , Rongfu Zhang , Guennadi A. Evmenenko , Yan-Yan Hu , Michael J. Bedzyk , Katharine Page , Sossina M. Haile , 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<sub>0.4</sub>Fe<sub>0.4</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3-δ</sub> (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 <sup>1</sup>H 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 (<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 (<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 , Zikang Hou , Zhihong Xiao , Ruirui Hao , Zhipeng Xu , Jing Yu , Qingyin Zhang , 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<sup>+</sup> 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<sup>−1</sup> at ambient temperature. It retains 90.52 % capacity after 200 cycles at 0.1 A g<sup>−1</sup> and maintains a reversible capacity of 240 mAh g<sup>−1</sup> 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}