Journal of Materials Science & Technology最新文献

{"title":"Starch-assisted microcrystalline regulation of coal-derived carbon for high-performance potassium ion batteries","authors":"Xiaqing Chang, He Chen, Chengtao Gao, Shanshan Luo, Razium Ali Soomro, Ning Sun, Bin Xu","doi":"10.1016/j.jmst.2025.05.070","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.05.070","url":null,"abstract":"Potassium ion batteries (PIBs) present significant potential for large-scale energy storage applications due to their abundance and cost-effectiveness. However, the commercialization of PIBs is hindered by the limited availability of suitable carbon-based anode materials that combine high performance, cost efficiency, and scalability. Herein, coal-derived carbon anode material with outstanding potassium storage properties was synthesized using a microcrystalline hybridization strategy facilitated by starch. The highly cross-linked structure formed through molecular dehydration and polymerization during the pre-oxidation process can effectively suppress the rearrangement of carbon layers during subsequent carbonization. As a result, the obtained hybrid carbon material characterized by a large interlayer distance and locally short-ranged structures, achieves a reversible potassium storage capacity of 284.9 mAh g⁻¹ with excellent rate performance and long-term cycling stability with a capacity retention of 92.2% after 500 cycles at 1 C. The underlying microcrystalline hybridization mechanism has been elucidated by in-situ FTIR analysis, and the K-storage process has also been intensively studied. This work offers a viable route for preparing coal-based carbon material with outstanding electrochemical K-storage capabilities, which is supposed to promote the development of cost-effective and sustainable carbonaceous materials for the practical application of PIBs.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"706 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144612926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced interfacial bonding strength via multi-scale microstructure formation in 304SS/TA2 composite tubes fabricated by three-roll skew rolling","authors":"Hui Niu, Tao Wang, Ce Ji, Lun Fu, Zhihui Gao, Qingshan Ding","doi":"10.1016/j.jmst.2025.05.072","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.05.072","url":null,"abstract":"The widespread application of titanium/steel composite tubes in marine engineering and petrochemical industries has been severely restricted by the absence of efficient fabrication methods. In this study, high-strength 304 stainless steel (304SS)/TA2 composite tubes with metallurgical bonding were successfully fabricated using a three-roll skew rolling process, filling the gap in producing titanium/steel composite tubes with large length-to-diameter ratios. Based on the unique non-uniform deformation characteristics of three-roll skew rolling, this study systematically investigates the influence of temperature on interfacial microstructure and bonding strength. The results show that the bonding strength of 304SS/TA2 composite tubes first increases and then decreases within the temperature range of 600–800°C. Compared to traditional explosion welding (∼185 MPa) and diffusion bonding (∼150 MPa), the peak bonding strength of 247.73 MPa at 700°C represents a 34% improvement. The enhanced bonding strength can be attributed to two key mechanisms: (1) The formation of a solid solution strengthening layer and β-Ti phase, which effectively impedes strain transfer from the TA2 side to the interface, thereby delaying interfacial failure; (2) The synergistic interaction between discontinuous micron-scale β-Ti phases and nano-scale TiC particles near the interface, which collectively contribute to a multi-scale particle pinning effect, further reinforcing interfacial bonding. These findings indicate that precise temperature control during three-roll skew rolling can effectively tailor interfacial structures, providing a viable technical pathway for achieving high-strength bonding in dissimilar metal composite tubes.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"18 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144611340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of cold rolling on the precipitation of Custom 455 stainless steel during aging at 480°C","authors":"Guangyan Sun, Jianchao Peng, Zemin Wang, Liqin Zhang, Wenqing Liu, Xiangyuan Xiong","doi":"10.1016/j.jmst.2025.06.018","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.06.018","url":null,"abstract":"This work studies the effects of cold rolling on the evolution of nanoscale precipitates and associated strengthening in the precipitation hardenable Custom 455 stainless steel during aging at 480°C by atom probe tomography, transmission electron microscope, and mechanical property testing techniques. The quantitative and correlative analyses of how cold deformation-induced dislocation structure affected the nucleation, morphology, and composition of Cu-rich precipitates and other phase precipitates in Custom 455 during aging were achieved for the first time by comparing the steel samples with and without cold rolling. The results showed that the cold rolling by 75% deformation enhanced the level of response to age hardening at a shorter time, giving rise to a peak value of yield strength of 1790 MPa and a fairly high elongation (EL) of 6.6%, which is 120 MPa higher than the standard value of 1670 MPa for the Custom 455 stainless steel used in industry. In comparison with the solution-treated sample, the cold-rolled sample had a higher number density of spherical Cu-rich and Cu/Ni/Ti/Si clusters when aged for 5 min, due to the introduction of a high density of dislocations and other defects by cold rolling that served as nucleation sites for the Cu-rich and Ni/Ti/Si-rich clusters. With increasing aging time to 0.5 h, the Cu-rich precipitates and Ni₃Ti phase precipitates grew larger, showing the highest number density of precipitates during the aging process, and the G phase particles were formed. After being aged for 4 h, the sizes of Cu-rich precipitates, Ni₃Ti phase, and G phase particles increased for both the solution-treated and cold-rolled samples, while their number densities decreased. The orientation relationship between the three precipitates and the matrix obeys: (111)_Cu//(0004)_Ni3Ti//(022)_G//(011)_M and [0−11]_Cu//[−12−10]_Ni3Ti//[100]_G//[100]_M.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"14 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regulation mechanisms of entropy synergistic effects on enhancing mechanical properties and thermal conductivity in aluminum alloys","authors":"Wen-Jing Liu, Yuan-Dong Li, Jin Qiu, Xiao-Mei Luo, Hong-Wei Zhou, Guangli Bi","doi":"10.1016/j.jmst.2025.05.067","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.05.067","url":null,"abstract":"The intrinsic trade-off between mechanical strength and thermal conductivity in aluminum alloys presents a significant challenge, limiting their utilization in advanced applications. Traditional alloy design methodologies tend to intensify electron-phonon scattering, leading to deteriorated thermal transport properties. This study introduces a design framework that exploits the combined effects of electronic, configurational, and vibrational entropy, systematically examining entropy influences on alloy performance through integrated experimental and first-principles computational methods. Al-Si, Al-Mn, and Al-Mg alloys with varying compositions (1–5 wt.%) were produced using permanent mold casting, while density functional theory (DFT) calculations were conducted to evaluate electronic, configurational, and vibrational entropy. Additionally, a multi-entropy-properties coupling model was formulated, effectively linking entropy parameters with mechanical and thermal properties. Experimental findings indicate that increasing solute content enhances strength in all three alloys while compromising ductility. DFT calculations suggest that configurational entropy primarily contributes to strength improvement by inducing lattice distortion through solute atoms, whereas electronic entropy decreases thermal conductivity by generating localized states near the Fermi level. Furthermore, both configurational and vibrational entropy suppress thermal transport through electron-phonon scattering. The developed multi-entropy-property coupling model corroborates these findings, highlighting the pivotal role of multiscale entropy interactions in optimizing alloy performance. This research offers valuable insights into designing aluminum alloys with enhanced strength and thermal conductivity, demonstrating considerable potential for applications in electronics thermal management and lightweight structural materials.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"3 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144594654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deciphering the impact toughening mechanism of α+β titanium alloy with lamellar microstructure: From crack initiation and propagation perspectives","authors":"Jinhua Dai, Bin Tang, Chuanyun Wang, Beibei Wei, Jiaqi Wu, Chenyu Zhang, Fengtian Yu, Pengwei Wang, Zixiang Dong, Jinshan Li, Pingxiang Zhang","doi":"10.1016/j.jmst.2025.05.068","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.05.068","url":null,"abstract":"This study deciphered the influence of lamellar <em>α</em> (<em>α</em>_l) colony parameters on impact toughness of <em>α</em>+<em>β</em> titanium alloy with lamellar microstructure. <em>α</em>+<em>β</em> titanium alloy Ti-5Al-7.5V-0.5Mo-0.5Zr-0.5Si was <em>β</em> treated and cooled under different cooling rates to obtain <em>α</em>_l colony with diverse morphology and size. U-notch Charpy impact test revealed that the impact toughness increased with decreased cooling rate and consequent <em>α</em>_l colony coarsening. Impact load-displacement curves demonstrated that <em>α</em>_l colony coarsening simultaneously enhanced both impact crack initiation energy and crack propagation energy. In the crack initiation region near U-notch, slip trace analysis indicated that coarse <em>α</em>_l colony extended dislocation mean free path and triggered multiple slips, which facilitated plasticity prior to U-notch cracking and enhanced <em>W</em>_i. Furthermore, as evidenced by Focus Ion Beam-Transmission Electron Microscopy, the nucleation of {10<span><math><mover accent=\"true\" is=\"true\"><mn is=\"true\">1</mn><mo is=\"true\">¯</mo></mover></math></span>2} &lt;<span><math><mover accent=\"true\" is=\"true\"><mn is=\"true\">1</mn><mo is=\"true\">¯</mo></mover></math></span>011&gt; twin in coarse <em>α</em>_l colony mitigated deformation heterogeneity, acted as prismatic slip pathway, and provided sustainable &lt;<em>c</em>+<em>a</em>&gt; dislocation sources, thereby further delaying U-notch crack initiation and enhanced <em>W</em>_i. Conversely, fine <em>α</em>_l colony restrained dislocation mobility and inhibited twin nucleation, leading to inferior U-notch plasticity and resultant low <em>W</em>_i. From U-notch cracking to final fracture, the sustained crack blunting due to substantial plastic deformation of coarse <em>α</em>_l along the crack path, as well as crack deflection and branching between adjacent coarse <em>α</em>_l colonies, synergistically enhanced <em>W</em>_p. Conversely, fine <em>α</em>_l colony impaired the plasticity along the crack path and restrained crack deflection, which was inconducive to <em>W</em>_p. In summary, <em>α</em>_l colony coarsening played a crucial role in activating multiple toughening mechanisms during both crack initiation and propagation to achieve desirable impact toughness in <em>α</em>+<em>β</em> titanium alloys with lamellar microstructure.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"93 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic response of grain rotation and slipping system activity in Al6014 tailor heat treated blank after non-uniform loading via crystal plasticity finite element method","authors":"Nan Xiang, Menghan Yang, Wanting Sun, Rui Zhang, Hairui Zhang, Tao Huang, Yaoli Wang, Yanchao Jiang, Feiyang Cheng","doi":"10.1016/j.jmst.2025.05.065","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.05.065","url":null,"abstract":"Plastic instability and premature failure during the forming of tailor heat-treated blank (THTB) can be probably inhibited by the introduction of a non-uniformly distributed pressure (NUDP) field due to the reduction of pressure localization on the heat-treated zone (HTZ). Nevertheless, the inherent complex thermal and mechanical loading conditions of such a process exhibit the underlying challenges in revealing its potential physical mechanisms. In this work, the deformation mechanisms of Al6014 THTB under NUPD are systematically investigated via the crystal plasticity finite element method, aiming to establish the dynamic response between the lattice structure, crystallographic orientation, and slip system activity at the microscopic level and the macroscopic plastic behaviors. The evolution of the slip system normal of the representative grains indicates that as compared to uniformly distributed pressure, NUDP can enhance grain rotation in the as-received zone and HTZ, leading to a higher fraction of grains with rotation angles (<em>ξ</em>) deviating from <em>ξ</em> = 0°. Besides, the evolution of slip system activity and cumulative shear strain rate suggests that when NUDP is introduced, the normal pressure on the HTZ is decreased, leading to the reduced increasing rate of slip system activation in each loading transient and the enhanced probability of simultaneous activation of multiple slip systems. This can promote the multi-directional slip activation within the HTZ, but maintain the limited dislocation movement and propagation rate so that significant grain rotation and intergranular deformation are suppressed. Accordingly, the duration of plastic shear strain accumulation is prolonged, which can mitigate the strain localization in the HTZ and improve the macroscopic forming limit. The new insights into the relationships between the microstructure evolution and mechanical response of Al6014 THTB under complex load conditions may facilitate process control.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"10 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144586846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neutron irradiation and stress-induced creep rafting of α′ phase in Fe-Cr-Al alloy: Crystal plasticity multi-phase-field simulation","authors":"Haiwei Zhang, Zan Zhang, Shenglong Wang, Ye Shan, Kunning Niu, Suleman Muhammad, Shiyan Pan, Yongsheng Li","doi":"10.1016/j.jmst.2025.05.066","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.05.066","url":null,"abstract":"Servicing as the nuclear power plant structural materials, the ferrite stainless steels suffer the high irradiation and stress in working. Driven by the creep strain energy and neutron irradiation dose rate (DR), the Cr-enriched α′ phase will be rafted via elemental diffusion in Fe-Cr-based ferrite steels; the rafting of the α′ phase has great effects on the creep properties of the alloys. By coupling the rate theory and crystal plasticity model, the multi-field coupling phase-field modeling is performed to investigate the morphology and evolution kinetics of Cr-enriched α′ phase in Fe-35Cr-10Al (at.%) alloy under different neutron irradiation DRs with creep strains, the elements directional diffusions between the α/α′ phases are revealed by the diffusion potential. As the DR increases from 10⁻¹² to 10⁻⁷ dpa (displacements per atom)/s, the concentration of vacancies increases, accelerating the diffusion of solute atoms, and the rafting degree of α′ phase becomes more evident during the creep process. The rafting shows a wave shape for the concentration of equivalent strain in the narrow α-matrix channel, which produces a higher strain than inside of α′ phases and other regions of the α-matrix channel. In the initial stage, rapid increases in the partition coefficient of Cr and rapid decreases in Al between α and α′ phases indicate that the formation of α′ phase is dominant, and the obvious rafting happens at this stage. The multi-filed effects in diffusion time and nano length scale reveal the essential diffusion rafting of α′ phase in creep and irradiation states.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"21 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144586849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Copper anchored MXene regulated metal-oxide interfaces for the CO2 electrocatalytic conversion","authors":"Linhao Liu, Hailong Li, Tianbin Yuan, Jianwen Zhang, Kangning Xue, Juan Hou, Guozhong Cao","doi":"10.1016/j.jmst.2025.04.087","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.04.087","url":null,"abstract":"Electrocatalytic conversion of CO₂ into CO is a promising strategy for mitigating the energy crisis, but simultaneously achieving high selectivity and activity of electrocatalysts remains challenging. Herein, we construct a catalyst with a special interface structure featuring abundant unsaturated coordination surface sites that boost CO₂ conversion. The Cu-Ti₃C₂T<em>_x</em>/ZnO catalyst with interface coupling structure achieved high CO Faraday efficiency (FE_CO=90.71% in H-Cell, FE_CO=98.4% in Flow Cell), and maintained high FE_CO (greater than 85.2%) and stable current density for 20 h under high current conditions (200 mA/cm²), demonstrating excellent selectivity and stability for the conversion of CO₂ to CO. In situ infrared and DFT (density functional theory) calculations reveal that this remarkable performance is attributed to the special interface coupling of Cu-Ti₃C₂T<em>_x</em>/ZnO, which can improve the selectivity of the *COOH intermediates (formation energy: 0.45→0.33 eV) and suppress hydrogen evolution reactions (HER) by increasing electronic donation of Cu and upward shift of the d-band center relative to the Fermi level within ZnO regulated Cu-Ti₃C₂T<em>_x</em> interface. This study successfully demonstrated a practical strategy for MXene-based interface interaction with metal oxide regulation and provided new insights for the design and preparation of high-performance electrocatalysts for CO₂ reduction.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"2 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144578267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal aging behavior of an as-rolled Fe-17Cr-12Ni-2.6Mo-1.6Mn-0.044C (in wt.%) austenitic stainless steel","authors":"Xiangbo Xu, Daokui Xu, Shenghu Chen, Shuo Wang, En-Hou Han","doi":"10.1016/j.jmst.2025.06.001","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.06.001","url":null,"abstract":"The thermal aging behavior of an as-rolled 316-type austenitic stainless steel (Fe-17Cr-12Ni-2.6Mo-1.6Mn-0.044C (in wt.%)) was investigated under conditions of 550°C/0–10000 h, 600°C/0–1000 h and 650°C/0–60 h. It demonstrated that the degree of sensitization (<em>R</em>_a) of thermal-aged samples due to the precipitation of <em>M</em>₂₃C₆ particles at grain boundaries can be measured and quantified by using the double loop electrochemical potentiokinetic reactivation (DLEPR) method. At 550, 600 and 650°C, the determined <em>R</em>_a values increased with thermal aging time in a fourth-order polynomial relationship. Based on the condition of equal <em>R</em>_a values at 550, 600 and 650°C, the equivalent acceleration equation between thermal aging temperatures and times was established for predicting the degree of thermal damage of austenitic stainless steels during the long-time service at elevated temperatures. Moreover, since the formation of <em>M</em>₂₃C₆ precipitates led to the severe Cr depletion at GBs and the degradation of passive film, the charge transfer resistance (<em>R</em>_ct) values of the 550°C/9000 h, 600°C/1000 h and 650°C/60 h thermal-aged samples were decreased to 20% that of the as-received sample.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"9 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144578259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ionically conductive NiFe2O4/CNTs organohydrogel composite for boosting efficient electromagnetic wave absorption","authors":"Yuelin Lv, Hui Zhao, Jieyun Zhang, Tong Gao, Qiang Zhuang, Jie Kong, Lixin Chen","doi":"10.1016/j.jmst.2025.05.064","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.05.064","url":null,"abstract":"Gel-based electromagnetic wave (EMW) absorbing materials demonstrate substantial potential in wearable electronics and soft robotics. However, it remains challenging to simultaneously achieve superior impedance matching and efficient electromagnetic energy dissipation through benefiting potential synergies among multifunctional attributes. In this work, a novel salting-out organohydrogel containing 0.5 wt.% NiFe₂O₄/CNTs was successfully synthesized, with a three-dimensional (3D) porous cross-linked structure and multiple heterointerfaces, which dramatically boosts the interfacial effects and improves the polarization loss. Meanwhile, dense polymer networks impose steric hindrance that elevates the energy barrier for molecular reorientation and ionic transport resistance, synergistically amplifying both polarization and ohmic conductive losses. Taking advantage of the features of considerable multiple polarization loss and optimized impedance matching, the as-prepared S-0.5 NiFe₂O₄/CNTs organohydrogel has achieved exceptional EMW absorption performance (the minimum reflection loss RL = −48.31 dB and the maximum adequate absorption bandwidth EAB reaches 6.16 GHz). This as-prepared organohydrogel exhibits optimal radar cross-section (RCS) reduction performance with a maximum value of 21.63 dB m². Such excellent electromagnetic characteristics deepen the mechanistic understanding of internal attenuation processes in gel-based EMW absorbers and provide novel design principles for advancing next-generation flexible electronics.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"9 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144578266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}