ACS Applied Nano Materials最新文献

{"title":"Plasma-Induced Phase Transition and Ruthenium Nanoparticle Decoration on 1T/2H WSe2 Nanosheets for Hydrogen Evolution Reaction","authors":"Shih-Yu Huang,&nbsp;Jie Lin,&nbsp;Yung-Chun Huang,&nbsp;Feng-Hsing Chou,&nbsp;Yun-chu Hsieh,&nbsp;Cheng-Hsi Yeh,&nbsp;Hsin-Yi Tiffany Chen,&nbsp;Kung-Hwa Wei","doi":"10.1021/acsanm.6c02973","DOIUrl":"https://doi.org/10.1021/acsanm.6c02973","url":null,"abstract":"<p>Phase or interface engineering of two-dimensional (2D) transition-metal dichalcogenides is an effective approach for enhancing hydrogen evolution reaction (HER) activity. Herein, we combine both of them by a hybrid top-down and bottom-up strategy that involves first synthesizing heterophase 1T/2H WSe₂ nanosheets via dual-cathodic plasma exfoliation from the bulk and then decorating Ru nanoparticles (NPs) (∼3 nm) on WSe₂ nanosheets (NSs) through an in situ hydrothermal growth process. The plasma exfoliation process induced defects, compressive strain, and electron injection, promoting partial 2H-to-1T phase conversion of WSe₂ NSs. Density functional theory calculations reveal stronger Ru NPs binding on the 1T phase than on the 2H phase with binding energies of −12.93 and −11.88 eV on the 1T basal plane and Se edge, respectively, compared with −7.52 and −10.03 eV on the corresponding 2H sites; this offset binding energy allows homogeneous Ru NP dispersion across basal planes and edge sites and induces hydrogen adsorption free energy (Δ<em>G</em>_H) values closer to zero. The optimized Ru7.5−1T/2H WSe₂ nanocomposite exhibited excellent HER performance, delivering an overpotential of 154 mV at 10 mA cm⁻² and a Tafel slope of 58 mV dec⁻¹, significantly outperforming pristine WSe₂ NSs (358 and 101 mV dec⁻¹, respectively). Moreover, negligible degradation of the Ru7.5−1T/2H WSe₂ nanocomposite was observed after 5000 cyclic voltammetry cycles, demonstrating its outstanding durability. The combined effects of heterophase formation and Ru−WSe₂ interfacial interactions provide an effective route toward producing highly active and durable HER electrocatalysts.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"9 40","pages":"18568–18581"},"PeriodicalIF":5.8,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interfacial Catalysis within Pickering Emulsion Droplets for Selective Imine Synthesis","authors":"Xiaomiao Guo,&nbsp;Xiaoyu Zhang","doi":"10.1021/acsanm.6c03461","DOIUrl":"https://doi.org/10.1021/acsanm.6c03461","url":null,"abstract":"<p>The oxidative coupling of benzylamine driven by reactive oxygen species (ROS) is an efficient route to imines; however, the targeted generation of superoxide anion radicals (^•O₂⁻), which are crucial for controlling the coupling process, remains a significant challenge. In this study, we developed an amphiphilic manganese dioxide (MnO₂) nanocatalyst capable of preferentially adsorbing at liquid−liquid biphasic interfaces, enabling the stabilization of a water-in-oil Pickering emulsion system. The unique interface of the Pickering emulsion droplets not only provides a vast interfacial area for the reaction but also facilitates the enrichment of <em>tert</em>-butyl hydroperoxide (TBHP) at the interface. Meanwhile, the abundant Mn³⁺ species generated by nitrogen doping in MnO₂ promote the heterolytic cleavage of TBHP to generate favorable ^•O₂⁻. As a result, the Pickering emulsion system achieves a benzylamine conversion &gt;99.0% and an imine selectivity &gt;99.0%, significantly outperforming the single oil phase, aqueous phase, and conventional biphasic system, thus demonstrating exceptional catalytic performance. These findings demonstrate that Pickering emulsion engineering can overcome mass-transfer limitations and precisely regulate selectivity in imine synthesis, offering a sustainable and highly efficient strategy for the catalytic oxidative coupling of amines.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"9 40","pages":"18866–18874"},"PeriodicalIF":5.8,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Network and Single-Node Criticality in Cluster-Assembled Nanostructured Systems: Implications for Adaptive Neuromorphic Devices","authors":"Alberto Gatti,&nbsp;Davide Perillo,&nbsp;Davide Decastri,&nbsp;Paolo Milani,&nbsp;Francesca Borghi","doi":"10.1021/acsanm.6c02643","DOIUrl":"https://doi.org/10.1021/acsanm.6c02643","url":null,"abstract":"<p>Self-organized criticality (SOC) has emerged as a hallmark of neuronal biological systems, arising from their highly interconnected architecture and enabling efficient processing, transmission, and adaptation to analog signals. Inspired by these observations, artificial systems for neuromorphic computing that exhibit critical dynamics have been extensively investigated. Among them, self-assembled materials have shown considerable promise, displaying spontaneous collective behavior and scale-invariant dynamics. However, the ability to controllably tune criticality in such systems remains largely unexplored, particularly through the reversible programming of their functional connectivity. Here, we demonstrate that cluster-assembled materials can dynamically self-reorganize their functional network connectivity in response to different electrical stimuli. By exploiting this adaptive reconfiguration, the system can be reversibly driven toward distinct dynamical regimes, including both network-level and single-node near-critical states. These results establish cluster-assembled materials as a versatile hardware platform for the investigation and control of critical phenomena, while opening opportunities for adaptive neuromorphic computing and bio-inspired information processing.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"9 40","pages":"18461–18476"},"PeriodicalIF":5.8,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149153203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Robust Spin Splitting and Strain-Controlled Optical Response in Monolayer CrC2N4 for Valleytronic and Optoelectronic Applications","authors":"Md. Samrat,&nbsp;Vivek Chowdhury,&nbsp;Sake Wang,&nbsp;Ahmed Zubair","doi":"10.1021/acsanm.6c03173","DOIUrl":"https://doi.org/10.1021/acsanm.6c03173","url":null,"abstract":"<p>The atomically thin CrC₂N₄ has recently emerged as a promising two-dimensional semiconductor, yet its spin−orbit-coupled (SOC) valley physics and strain-tunable nanoscale optical response remain largely unexplored. Here, we investigated the electronic, valley, charge-transfer, and optical properties of pristine and biaxially strained monolayer CrC₂N₄ using first-principles calculations. Total-energy comparison among nonmagnetic, ferromagnetic, and antiferromagnetic configurations confirmed a nonmagnetic ground state, corroborating that time-reversal symmetry was preserved while spatial inversion symmetry was broken. The monolayer exhibited a direct band gap of 2.33 eV at the <em>K</em>/<em>K</em>′ valleys. SOC produced valley-contrasting out-of-plane spin polarization, yielding a valence band spin splitting of 80.7 meV and a conduction band spin splitting of 11.6 meV. This asymmetry was enforced by the orbital angular momentum character of the band edges, the valence edge carrying |<em>m</em>_l| = 2 and the conduction edge being dominated by an <em>m</em>_l = 0 state for which the first-order SOC contribution vanishes by symmetry. Orbital-resolved analysis showed that the edge states were governed by Cr-d and N-p hybridization, while Bader analysis indicated polar-covalent bonding through charge transfer toward N atoms. Biaxial strain from −4% to +4% tuned the band gap from 2.749 to 1.759 eV and drove an indirect-to-direct gap transition, with phonon dispersion and <em>ab initio</em> molecular dynamics calculations confirming dynamical and thermal stability at both strain limits. Tensile strain enhanced the Berry curvature from 30.85 to 42.35 bohr² and shifted the optical response across the visible−near-infrared region for the strain range. These results highlight monolayer CrC₂N₄ as a promising platform for strain-engineered nanoscale valleytronic and optoelectronic device applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"9 40","pages":"18664–18678"},"PeriodicalIF":5.8,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149153238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Aspect-Ratio Laser Heat-Mode Patterning of Low-Loss Phase Change Material Sb2S3 for Micro/Nanolithography","authors":"Haolin Dai,&nbsp;Zhihong Huang,&nbsp;Kui Zhang,&nbsp;Wenbo Liu,&nbsp;Jiahao Chi,&nbsp;Jingsong Wei,&nbsp;Yang Wang","doi":"10.1021/acsanm.6c03329","DOIUrl":"https://doi.org/10.1021/acsanm.6c03329","url":null,"abstract":"<p>Laser heat-mode lithography is an efficient method for micro/nano-patterning of phase change materials (PCMs). However, traditional PCMs exhibit limited exposure depth and insufficient aspect ratio due to their strong light absorption. This paper focuses on the laser heat-mode patterning characteristics of low-loss/low-absorption binary chalcogenide PCM Sb₂S₃, which has received significant attention in recent years due to its applications in dynamic nanophotonics. By comparing the optical and thermal transmission characteristics of Sb₂S₃ and classic PCM AgInSbTe through finite element simulation, the advantage of deep exposure brought by the high transmittance of Sb₂S₃ and the regulation law of film thickness on the photothermal process are demonstrated and analyzed. The heat-mode exposure of Sb₂S₃ thin films was carried out with a 405 nm laser direct writing system. The optimal developer concentration is obtained, and the physicochemical mechanism of its negative tone patterning is clarified through X-ray photoelectron spectroscopy (XPS). The preparation of micro−nano structures with a minimum line width of 125 nm and an aspect ratio greater than 1 is achieved on Sb₂S₃ thin films. The pattern transfer to Si substrates through inductively coupled plasma (ICP) etching is completed using Sb₂S₃ as a mask. This study provides a simple and effective method for the preparation of Sb₂S₃-based micro−nano optoelectronic devices, and a high-performance heat-mode resist material for micro/nanolithography.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"9 40","pages":"18783–18792"},"PeriodicalIF":5.8,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149153283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crystalline Calcium Ferrite Nanoparticles for Efficient Ethanol Electro-oxidation","authors":"Sapna Devi,&nbsp;Sushma Kumari,&nbsp;Menaka Jha","doi":"10.1021/acsanm.6c01804","DOIUrl":"https://doi.org/10.1021/acsanm.6c01804","url":null,"abstract":"<p>Electrochemical ethanol oxidation (EOR) is a promising energy alternative, as it is inexpensive, easy to handle, less toxic, and produced from renewable biomass. The best-known materials for the EOR are noble-metal catalysts; however, their application is limited by poor durability and they are prone to CO poisoning. Therefore, developing cost-effective, CO-tolerant catalysts is crucial. In this work, nanocrystalline CaFe₂O₄ was synthesized via a simple sol−gel method. TEM analysis confirmed the formation of nanocrystalline CaFe₂O₄ particles. The synthesized CaFe₂O₄ nanoparticles display good electrocatalytic performance toward the ethanol oxidation reaction (EOR), which can be attributed to their nanoscale dimensions, enhanced surface accessibility, and favorable charge-transfer characteristics. The CaFe₂O₄ nanoparticles exhibited a promising oxidation peak current density of 1.01 mA cm⁻² at a 1.50 V peak potential. They display a smaller Tafel slope of 112 mV dec⁻¹ with high CO tolerance, making them a promising electrocatalyst to meet energy demand. The enhanced catalytic performance of the as-prepared nanoparticles is observed, as they exhibit a lower charge-transfer resistance, which facilitates ethanol oxidation, and they also demonstrate good durability for prolonged hours. The low-cost, simple spinel oxide CaFe₂O₄ can serve as an earth-abundant alternative to noble-metal catalysts for sustainable energy applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"9 40","pages":"18351–18361"},"PeriodicalIF":5.8,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ammonia Sensing Using Gold-Decorated rGO: Effects of Synthesis Routes on the Sensing Mechanism","authors":"Ambika Kumari,&nbsp;Srijeet Tripathy,&nbsp;Monojit Mondal,&nbsp;Akish Emmanuel Kujur,&nbsp;Suverna Trivedi,&nbsp;Tarun Kanti Bhattacharyya","doi":"10.1021/acsanm.6c04297","DOIUrl":"https://doi.org/10.1021/acsanm.6c04297","url":null,"abstract":"<p>Understanding how metal functionalization modifies charge transport in graphene can facilitate the rational design of high-performance graphene-based sensors. In this work, we investigate the role of gold functionalization in reduced graphene oxide (rGO)-based ammonia (NH₃) sensors by comparing two distinct gold-functionalized rGO channel architectures: one consisting of rGO decorated with gold nanoparticles (rGO-AuNP) and the other based on an rGO-Au composite formed through simultaneous gold functionalization and particle synthesis (rGO-AuμF). Electrical measurements revealed opposite responses toward NH₃ exposure, with the rGO-AuNP device exhibiting an increase in current, whereas the rGO-AuμF device showed a decrease. In the rGO-AuNP device, catalytic oxidation of NH₃ removes adsorbed oxygen species from the surface, accompanied by energy-band realignment that lowers the electron transport barrier. In contrast, the rGO-AuμF device favors direct NH₃ adsorption, where electron donation partially compensates the hole carriers, resulting in a decrease in current. Analysis of the transfer characteristics revealed that these contrasting responses are associated with differences in the Dirac voltage, consistent with modulation of the effective flat-band voltage. Gold functionalization primarily induces shifts in the effective flat-band voltage, while the extent of direct carrier doping may be limited by metal-induced gap states (MIGS) and associated Fermi-level pinning at the contacts. Density functional theory (DFT) simulations further support experimental observations. These findings provide mechanistic insights into the role of gold in tuning charge transport in rGO-based gas sensors.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"9 40","pages":"19101–19112"},"PeriodicalIF":5.8,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanoporous 6FDA-Polyimide Benzimidazole Membranes for High-Temperature Hydrogen Recovery","authors":"Daria A. Syrtsova,&nbsp;Roman Y. Nikiforov,&nbsp;Victoria E. Ryzhikh,&nbsp;Igor I. Ponomarev,&nbsp;Kirill M. Skupov,&nbsp;Yulia A. Volkova,&nbsp;Mikhail I. Buzin,&nbsp;Nikolay A. Belov,&nbsp;Alexandr Y. Alentiev","doi":"10.1021/acsanm.6c03423","DOIUrl":"https://doi.org/10.1021/acsanm.6c03423","url":null,"abstract":"<p>Development of nanomaterials with enhanced functional properties by efficient methods is a current scientific and technological challenge in high-temperature gas separation, particularly in hydrogen recovery. In this study, nanoporous polyimide benzimidazole films of a thermostable nanoporous polymer (6FDA-DAPBI) are prepared by the polycondensation of 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and 5(6)-amino-2-(<em>p</em>-aminophenyl)benzimidazole (DAPBI) in the presence of benzoic acid as a catalyst in phenol under Ar flow, followed by casting the reaction solution onto a glass substrate. For the first time, gas transport characteristics of the 6FDA-DAPBI film for individual gases such as He, H₂, O₂, N₂, CO₂, and CH₄ in the range 100−250 °C, as well as diffusion coefficients, solubility coefficients, diffusion and permeability activation energies, and heats of sorption, are thoroughly investigated. The presence of nanoporous morphology is confirmed by the CO₂ sorption employing the Dubinin−Radushkevich and NLDFT methods. At about 150 °C, a slope change for the permeability vs temperature dependence is observed. It indicates a polymer transition to a metastable state with the increased free volume and reduced gas apparent activation energies, which is maintained during further heating and cooling cycles. Above 150 °C, the Robeson diagram data for individual H₂ and CO₂ and for the H₂/CO₂ mixture of various compositions lie above the 2008 upper bound for each heating cycle. Variation of the component ratio in the H₂−CO₂ mixture reveals that the higher hydrogen concentration leads to an increase of the separation factor. For a hydrogen concentration of 60 vol % at 250 °C and pressure drop of 1 atm, the separation factor reaches 300−350, which is almost 40 times higher compared with the ideal selectivity due to the presence of nanoscale channels within the matrix. The presented findings indicate a high potential for applying the developed nanoporous material in high-temperature hydrogen recovery technologies.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"9 40","pages":"18845–18856"},"PeriodicalIF":5.8,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interfacial Chemical Bonding-Driven Charge Transfer from Silver Nanoparticles to Doped Graphene for Electrochemical Sensing of Metribuzin","authors":"Hao Wu,&nbsp;Xiaoyu Jiang,&nbsp;Li Li,&nbsp;Xinyue Hou,&nbsp;Yongfu Lian","doi":"10.1021/acsanm.6c03619","DOIUrl":"https://doi.org/10.1021/acsanm.6c03619","url":null,"abstract":"<p>Understanding charge transfer at the metal−support interface is crucial for optimizing the electrochemical activity of metal sites. Herein, a series of silver nanoparticles (Ag NP)/heteroatom-doped graphene composites (Ag/G-X, where X = N, P, or S) was designed and prepared. Ag/G-S with an average Ag NP size of 4.5 ± 0.7 nm enables rapid electron transfer required for two-electron metribuzin (MB) electroreduction. The Ag/G-S modified glassy carbon electrode (GCE) delivers better MB sensing performance than Ag/G-N/GCE and Ag/G-P/GCE, achieving a limit of detection (LOD) of 0.53 ng mL⁻¹ and a limit of quantification (LOQ) of 1.77 ng mL⁻¹, with a sensitivity of 44.612 μA mL μg⁻¹ cm⁻². The Ag/G-S/GCE displays a linear range of 0.001−16 μg mL⁻¹ (<em>R</em>² = 0.99), along with stability over 2000 cyclic voltammetry cycles, reproducibility beyond 30 days, anti-interference capability against common inorganic ions and a recovery rate of 94.1% to 101.84% in real samples. Theoretical analysis reveals that Ag/G-X features an interfacial chemical bonding consisting of σ-type donation and d-π* back-donation, which governs charge transfer from Ag to the G-X substrate. Furthermore, the S-guided interfacial orbital interaction is more beneficial than that guided by N and P in regulating the d-band center of Ag NPs, thereby endowing the exposed Ag sites with optimized adsorption energetics for key intermediates in the MB reduction. This work demonstrates the role of interfacial chemical bonding-driven charge transfer in Ag/G-X for the two-electron electrochemical reduction of MB on Ag NP surfaces, and offers a strategy for developing Ag-based sensing nanomaterials.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"9 40","pages":"18941–18950"},"PeriodicalIF":5.8,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149153215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CaWO4 Nanoparticle-Assembled Hollow Spheres Anchored on Mesoporous Carbon Microbeads as an Anode Material for Lithium-Ion Batteries","authors":"Qing Wang,&nbsp;Chunsheng Li","doi":"10.1021/acsanm.6c03849","DOIUrl":"https://doi.org/10.1021/acsanm.6c03849","url":null,"abstract":"<p>The urgent need for high-performance lithium-ion batteries has driven significant interest in composite materials. However, the cooperative effects between metallic tungstate and carbon materials are not well understood. Herein, CaWO₄ hollow microspheres/meso-carbon microbead (MCMB) composites are successfully synthesized via a highly efficient microwave irradiation strategy, resulting in high purity and uniform elemental distribution. In the composites, CaWO₄ hollow microspheres, assembled with ultrafine CaWO₄ nanoparticles with a mean diameter of 47−60 nm, evenly anchored on the MCMB outer surfaces. The electrochemical mechanism explored by in situ XRD analysis proves the transformation from CaWO₄ to the reversible main phase of Li₄WO₅ with trace amounts of phases of Li₂WO₄ and Li₂W₂O₇. The composites for Sample 4 exhibit a good thermal stability, and an increased peak current density, achieving capacities reaching 1356.7 mAh g⁻¹ in the first cycle, 820.3 mAh g⁻¹ in the second cycle, and 689.2 mAh g⁻¹ in the 100th cycle. The analysis of the CaWO₄/MCMB composite reveals an innovative energy storage process, offering valuable insights for the development of high-safety lithium-ion batteries.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"9 40","pages":"19065–19074"},"PeriodicalIF":5.8,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149153190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}