Ionics最新文献

{"title":"L’appel du vide: attraction of mobile ions to a polymer-vapor interface","authors":"Anna E. Engle,&nbsp;Shane S. Cupp,&nbsp;Gerrick E. Lindberg","doi":"10.1007/s11581-026-07400-7","DOIUrl":"10.1007/s11581-026-07400-7","url":null,"abstract":"<div><p>Solid polymer electrolytes are used in many electrochemical devices. While they typically exhibit lower conductivities than liquid electrolytes, they often offer many advantages: longer lasting, higher mechanical strength, and can be solvent-free. However, solid polymer electrolytes are also susceptible to delamination, wherein the electrolyte separates from the electrode, creating voids between it and the electrolyte and thus hindering the performance of the device. This study uses molecular dynamics simulations to characterize structural changes that occur in a system of polyethylene oxide containing aqueous lithium bis(trifluoromethanesulfonyl)imide when it is exposed to a vapor interface. We show that over time the electrolyte and water aggregated at the interface, while the polymer receded toward the center of the condensed phase region. These results indicate that a device undergoing delamination may experience a more catastrophic failure than previously thought.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 10","pages":"10833 - 10842"},"PeriodicalIF":3.4,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sulfurization-induced microstructural tuning of electroless-deposited NiO thin films for enhanced pseudocapacitive performance","authors":"Ghadah M. Al-Senani,&nbsp;Stephen O. Oyetoro,&nbsp;Maruf M. Popoola,&nbsp;Salhah D. Al-Qahtani,&nbsp;Nada S. AlKadhi,&nbsp;Lukman O. Animasahun,&nbsp;Saheed A. Adewinbi","doi":"10.1007/s11581-026-07395-1","DOIUrl":"10.1007/s11581-026-07395-1","url":null,"abstract":"<div><p>The development of pseudocapacitive electrodes with enhanced charge-storage capability is crucial for advancing high-performance electrochemical energy storage devices. In this work, NiO and NiOₓS_γ thin-film electrodes were directly fabricated via a facile electroless deposition route using ammonium thiosulfate as an in-situ sulfur source to investigate the influence of sulfur incorporation on the microstructure and electrochemical performance. Structural characterization revealed that sulfur incorporation transformed the sparsely distributed NiO nanocrystals into a dense, interconnected mesoporous architecture with increased electrochemically active surface area and improved ion-transport pathways. X-ray diffraction and Raman analyses confirmed the formation of a mixed NiOₓS_γ phase with sulfur-induced structural defects. Electrochemical measurements demonstrated that sulfur incorporation significantly enhanced the pseudocapacitive behavior, yielding a specific capacitance of 305 F g⁻¹ at 10 mV s⁻¹ and 164 F g⁻¹ at 0.2 mA cm⁻², together with improved charge-transfer kinetics and reduced interfacial resistance compared with pristine NiO. Mott–Schottky analysis further revealed an increased donor density and a more negative flat-band potential, indicating enhanced charge transport characteristics. These results demonstrate that sulfur-induced microstructural and electronic modulation of electroless-deposited NiOₓS_γ thin films provides an effective strategy for developing scalable, high-performance pseudocapacitive electrodes for next-generation electrochemical energy storage devices.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 10","pages":"10855 - 10870"},"PeriodicalIF":3.4,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrothermal synthesis of Co- and Ni-Doped MnO₂ nanorods for enhanced energy storage performance","authors":"Sumaya Gul,&nbsp;Shashikant Sheoran,&nbsp;Vandana Mahlawat","doi":"10.1007/s11581-026-07402-5","DOIUrl":"10.1007/s11581-026-07402-5","url":null,"abstract":"<div><p>In this work, pristine, 6% Co-doped, and 6% Ni-doped MnO₂ nanorods were synthesized using the hydrothermal treatment followed by detailed study in terms of structural pattern, morphology, and electrochemical analysis. The formation of α-MnO₂ phase of the synthesized sample was confirmed by the X-ray diffraction analysis also suggesting no significant structural distortion upon addition of doping agents. Well-defined nanorod morphologies of all prepared samples was revealed by FESEM (Field-emission scanning electron microscopy), however, there was slight variation in MnO₂ nanorod size due to cobalt and nickel doping. The successful incorporation of Co and Ni into the MnO₂ lattice was confirmed by the Elemental analysis technique like EDX and X-ray photoelectron spectroscopy. Porous structure was analysed by BET and Raman active modes were confirmed by Raman spectra. Electrochemical performance of prepared samples was analysed using electrochemical impedance spectroscopy and Cyclic voltammetry measured in three electrode setup. Distinct redox peaks were seen from the CV curves, representative of prevailing pseudocapacitive behavior arising from reversible Faradaic reactions. CV measurements resulted in the specific capacitance values of 600 F g⁻¹ for pristine MnO₂, 1061 F g⁻¹ for 6% Co-doped MnO₂, and 786.04 F g⁻¹ for 6% Ni-doped MnO₂, respectively. GCD analysis at a current density of 0.4 A g⁻¹ yielded capacitance values of 500 F g⁻¹, 733.3 F g⁻¹, and 533.3 F g⁻¹ for pristine, Co-doped, and Ni-doped samples, respectively. The best cyclic stability was seen in 6% Co-doped MnO₂, which kept around 94.6% capacitance after 5000 cycles. The Co-doped sample is more stable because it has better electrical conductivity, lower charge-transfer resistance ( Rct = 0.9Ω seen in EIS results). Amongst all the samples, superior electrochemical performance was demonstrated by the Co-doped MnO₂, attributing them to increased electrical conductivity, enhanced ion diffusion, and improved redox-active sites. The present study demonstrates enhanced electrochemical results in terms of specific capacitance with Cobalt doping in pure MnO₂ respectively.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 10","pages":"10785 - 10798"},"PeriodicalIF":3.4,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon black-modified polyvinyl alcohol-based gel polymer electrolytes with enhanced ionic conductivity","authors":"A. A. Rahim,&nbsp;C. G. Er,&nbsp;P. Q. B. Mazlan,&nbsp;A. R. M. Rais,&nbsp;N. M. Disa,&nbsp;M. H. Buraidah,&nbsp;N. Shamshurim,&nbsp;I. M. Noor,&nbsp;M. F. Shukur,&nbsp;M. F. Aziz","doi":"10.1007/s11581-026-07389-z","DOIUrl":"10.1007/s11581-026-07389-z","url":null,"abstract":"<div><p>Gel polymer electrolytes (GPEs) have gained attention as safer alternatives to volatile liquid electrolytes in electrochemical systems typically in dye-sensitized solar cells (DSSCs). However, their performance is limited by their high polymer crystallinity and low ionic conductivity. In this study, a series of polyvinyl alcohol (PVA)-based GPEs system were synthesized using potassium iodide (KI) salt in ethylene carbonate (EC), propylene carbonate (PC), and dimethyl sulfoxide (DMSO) solvent. Various concentrations of carbon black (CB) nanofillers were added in electrolytes to study the effect of nanofiller on electrolyte characteristics. The structural and electrochemical properties of the GPEs was systematically investigated using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and electrochemical impedance spectroscopy (EIS). XRD results confirmed a reduction in crystallinity with increasing CB content, while FTIR analysis indicated strong interactions between CB and the polymer matrix. The highest ionic conductivity across all samples was 15.90 mS cm⁻¹ for the PVA-based electrolyte without CB. Within the CB-doped series, conductivity increased with increasing of CB amount and reached a maximum of 11.80 mS cm⁻¹ at 12 wt% CB, indicating that moderate CB loading capable to form partially percolated networks that improve ion transport relative to other CB-containing samples. The findings demonstrate that carbon black able to tune the structural and electrochemical properties of PVA-based GPEs, although the GPE without CB gave the highest absolute conductivity in this study, offering promising potential for advanced electrochemical applications.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 10","pages":"10747 - 10758"},"PeriodicalIF":3.4,"publicationDate":"2026-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microwave synthesis of FeNiSb medium-entropy alloy as a high-performance electrode for symmetric supercapacitors","authors":"Weiwei Zhao,&nbsp;Xue Wang,&nbsp;Shuai Zhang,&nbsp;Shuangyi He,&nbsp;Jujie Luo","doi":"10.1007/s11581-026-07381-7","DOIUrl":"10.1007/s11581-026-07381-7","url":null,"abstract":"<div><p>Supercapacitors show great promise for alleviating the energy crisis due to their unique energy storage mechanism. Developing high-performance electrode materials is critical to meet the increasing demand for efficient supercapacitors. In this work, FeNiSb medium-entropy alloy (MEA) nanoparticles were rapidly synthesized on nickel foam (NF) via a one-step microwave-assisted method. Owing to the uniformly distributed nanostructure and the synergistic electronic effects among multiple principal elements, the FeNiSb electrode provided abundant electroactive sites and fast ion-transport kinetics, resulting in good charge storage performance. The optimized electrode delivered a high specific capacity of 1487.2 C g^− 1 at 1 A g^− 1 and exhibited stable cycling performance with 80.3% capacity retention after 10 000 cycles. Moreover, a symmetric supercapacitor (SSC) assembled using identical FeNiSb electrodes achieved a high energy density of 97.5 Wh kg^− 1 at 750.2 W kg^− 1. This study successfully employed FeNiSb MEA for SSC, demonstrating outstanding electrochemical performance and providing a viable solution for designing advanced energy storage materials.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 10","pages":"10759 - 10770"},"PeriodicalIF":3.4,"publicationDate":"2026-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inhibiting high-voltage phase transition of O3-NaNi1/3Fe1/3Mn1/3O2 via Cu doping for high performance sodium-ion batteries","authors":"Zhengjia Xu,&nbsp;Xinyu Shi","doi":"10.1007/s11581-026-07404-3","DOIUrl":"10.1007/s11581-026-07404-3","url":null,"abstract":"<div><p>Among various sodium-ion cathode materials, O3-NaNi_1/3Fe_1/3Mn_1/3O₂ is promising candidate for practical application due to its high specific capacity and low cost. However, severe high-voltage phase transition during electrochemical cycling leads to poor cycling stability, limiting their practical application. Herein, a Cu-doping strategy is applied to prepare NaCu_1/10Ni_7/30Fe_1/3Mn_1/3O₂. It is found that the modified cathode exhibits suppressed phase transition and shows lowered volume strain (3.5% vs. 9.5% for the pristine NFM). The inhibited high-voltage phase transition improves the structural stability, thus enhancing the electrochemical performance. Consequently, within a voltage window of 2.0–4.2 V at 1 C, the Cu-doped cathode delivers an initial discharge specific capacity of 123.69 mAh g^-1 and retains 63.5% of its capacity after 150 cycles, significantly outperforming pristine NFM (37.8% retention). This improvement in cycling stability highlights the effectiveness of Cu doping in mitigating phase-transition-induced degradation. Overall, Cu doping effectively suppresses phase transitions and enhances structural stability, offering a promising strategy for developing high-performance Ni–Fe–Mn-based cathodes.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 10","pages":"10737 - 10745"},"PeriodicalIF":3.4,"publicationDate":"2026-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simultaneous electrochemical detection of methylene blue and rhodamine-b using manganese dioxide nanorods modified glassy carbon electrode","authors":"P. Sanjay,&nbsp;R. B. Raghavendra,&nbsp;M. S. Vasanthkumar,&nbsp;S. Shivakumara,&nbsp;Sathish Reddy","doi":"10.1007/s11581-026-07383-5","DOIUrl":"10.1007/s11581-026-07383-5","url":null,"abstract":"<div><p>The widespread discharge of synthetic dyes into aquatic environments poses a serious threat to water quality and public health, necessitating the development of rapid and sensitive analytical methods for their monitoring. In this work, an efficient electrochemical sensor was developed for the simultaneous detection of methylene blue (MB) and rhodamine B (RhB) using a MnO₂ nanorod-modified glassy carbon electrode (α-MnO₂/GCE). The electrochemical sensing performance of the modified electrode was systematically evaluated using cyclic voltammetry and differential pulse voltammetry, with both dyes exhibiting distinct, well-resolved electrochemical responses. Owing to the enhanced electroactive surface area and accelerated electron-transfer kinetics imparted by the MnO₂ nanorods, the sensor demonstrated excellent analytical sensitivity and low detection limits of 0.10 µM for MB and 0.56 µM for RhB, with sensitivities of 3.92 and 2.0 µA µM^-1 cm^-2, respectively. The developed sensing platform further showed reliable applicability toward the analysis of contaminated water samples. These findings demonstrate that MnO₂ nanorods are promising functional nanomaterials for the simultaneous electrochemical determination of hazardous organic dyes and offer a viable strategy for efficient water quality assessment.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 10","pages":"10697 - 10712"},"PeriodicalIF":3.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"NASICON-Type LATP solid-state electrolytes: From material preparation and ion transport mechanisms to interface engineering","authors":"Yuheng Wang,&nbsp;Caiwei Cheng,&nbsp;Chenxi He,&nbsp;Linzhao Wu,&nbsp;Jiaoling Qing,&nbsp;Tianbao Zhao,&nbsp;Zhicui Song","doi":"10.1007/s11581-026-07407-0","DOIUrl":"10.1007/s11581-026-07407-0","url":null,"abstract":"<div><p>Driven by the growing demand for energy storage devices with high-safety and high-energy-density, all-solid-state lithium batteries have attracted extensive attention due to their superior safety characteristics and potential for high energy density. Among various solid electrolytes, the sodium super ionic conductor (NASICON)-type Li_1+xAl_xTi_2−x(PO₄)₃ (LATP) has emerged as a highly promising solid electrolyte material owing to its high room-temperature ionic conductivity, excellent air stability, and relatively low production costs. Herein, we systematically review the crystal structure characteristics, lithium-ion transport mechanisms, and primary synthesis methods of LATP electrolytes, with particular emphasis on how sintering processes regulate microstructural development and ionic conductivity. Furthermore, this review not only discusses the interfacial stability issues between LATP and lithium metal anodes as well as cathode materials, but also summarizes various interface optimization strategies, including inorganic/organic interlayer modifications and composite electrolyte designs. Last, the challenges and future research directions for LATP electrolytes in achieving particle applications of high-performance all-solid-state batteries are outlined.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 10","pages":"10295 - 10314"},"PeriodicalIF":3.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vermiculite-coated Zn anodes for suppressed dendrite growth and side reactions towards long-life aqueous Zn-I2 batteries","authors":"Dandan Huang,&nbsp;Quan Ouyang,&nbsp;Pingchun Guo,&nbsp;Hedong Jiang","doi":"10.1007/s11581-026-07398-y","DOIUrl":"10.1007/s11581-026-07398-y","url":null,"abstract":"<div><p>Zn-ion batteries (ZIBs) have attracted considerable attention as promising energy storage systems owing to their natural abundance, low standard electrode potential (-0.76 V), and high theoretical capacity (820 mAh g^− 1). Nevertheless, their practical application is severely hindered by Zn dendrite growth, hydrogen evolution, and electrode passivation. To address these challenges, we constructed a Zn-based vermiculite coating on Zn anodes (Ver@Zn), which reduces the direct exposure of Zn to the electrolyte and suppresses side reactions and passivation layer formation. Owing to its unique Zn²⁺ interlayer channels and electronic insulating properties, the vermiculite coating facilitates uniform Zn²⁺ migration and nucleation, thereby enabling homogeneous Zn deposition. As a result, the modified Zn anode exhibited enhanced corrosion resistance and higher Coulombic efficiency (CE). The vermiculite particle with optimized size (45–61 μm) yielded the best cycling stability, with a symmetric cell lifetime of up to 1700 h, far exceeding that of bare Zn. Furthermore, the Ver@Zn anode delivered superior performance in Zn/I₂ full cells, maintaining high specific capacity, rate capability, and long-term cycling stability (98% capacity retention after 3000 cycles) with CE of 99.8%. This work demonstrates an effective surface engineering strategy for advancing high-performance aqueous Zn iodine battery.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 10","pages":"10727 - 10736"},"PeriodicalIF":3.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on solid-state lithium batteries: current industrialization status and stage-specific challenges","authors":"Shaohua Jia,&nbsp;Hualong Zhou,&nbsp;Wei Su,&nbsp;Yang Zheng,&nbsp;Rongrong Lei,&nbsp;Haidong Wu,&nbsp;Hongjun Wang,&nbsp;Wei Hong","doi":"10.1007/s11581-026-07329-x","DOIUrl":"10.1007/s11581-026-07329-x","url":null,"abstract":"<div><p>Solid-state lithium batteries (SSLBs) are widely considered a next-generation battery technology because they are expected to deliver higher safety and potentially higher energy density than conventional liquid-electrolyte lithium-ion batteries. In SSLBs, the solid-state electrolyte (SSE) replaces the liquid electrolyte and porous separator, functioning simultaneously as the Li-ion conductor and electronic insulator. As a result, SSE properties-including ionic conductivity, electrochemical/chemical stability, interfacial compatibility, and mechanical integrity-directly determine the feasibility of high-energy cell designs and the reliability of practical devices. In recent years, substantial progress has been achieved in SSE materials (polymer, oxide, sulfide, halide and composites), interface engineering, and lithium dendrite mitigation; meanwhile, patent filings and pilot-line activities have surged globally. However, the transition from laboratory demonstrations to large-scale production remains constrained by interfacial contact loss at rigid solid-solid interfaces, interphase instability (especially in sulfide-Li systems), process-structure-performance coupling during film/electrode manufacturing, incomplete standards, and persistent cost pressures. This review systematically summarizes research progress, patent landscapes, and industrialization status of SSLBs (including both all-solid-state batteries and solid-liquid hybrid batteries as a transitional form). Key contradictions and stage-specific bottlenecks are analyzed, and recommendations are proposed for accelerating fundamental breakthroughs, establishing route-aware standards, improving manufacturing verification, and optimizing cost-effective industrial chain layouts.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 10","pages":"10277 - 10294"},"PeriodicalIF":3.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}