Journal of Materials Science最新文献_第7页

Enhanced surface transport properties of high-quality ultrathin epitaxial Bi2Te3 films

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-01-15 DOI: 10.1007/s10853-025-10613-2

Jian Gao, Xudong Shi, Tingting Li, Zhiyu Wang, Mingze Li, Xuan P. A. Gao, Zhenhua Wang, Zhidong Zhang

{"title":"Enhanced surface transport properties of high-quality ultrathin epitaxial Bi2Te3 films","authors":"Jian Gao, Xudong Shi, Tingting Li, Zhiyu Wang, Mingze Li, Xuan P. A. Gao, Zhenhua Wang, Zhidong Zhang","doi":"10.1007/s10853-025-10613-2","DOIUrl":"10.1007/s10853-025-10613-2","url":null,"abstract":"<div><p>The topological surface states (TSS) of 3D topological insulators (TI) play a crucial role in their transport. How to avoid intrinsic defects in materials and thus increase the proportion of surface states in the transport process poses a great challenge to materials scientists. In our work, high-quality epitaxial topological insulator Bi<sub>2</sub>Te<sub>3</sub> ultrathin films with flat surface were prepared by pulsed laser deposition (PLD). The insulating resistivity-temperature (<i>ρ</i>-<i>T</i>) curve in Bi<sub>2</sub>(Te<sub>x</sub>Se<sub>1-x</sub>)<sub>3</sub> films with optimal doping concentration (25–35%) shows the transport of bulk state caused by intrinsic defects which is gradually suppressed. In thinner Bi<sub>2</sub>Te<sub>3</sub> films, the <i>ρ</i>-<i>T</i> curve displays a transition from negative to positive slope at higher temperatures, which is attributed to enhanced electron–electron interaction (EEI). The transition from a parabolic to a linear to a weak anti-localization (WAL) was observed in the magnetoresistance (MR) results of pure Bi<sub>2</sub>Te<sub>3</sub> ultrathin films with different thicknesses. By comparing the MR of Bi<sub>2</sub>(Te<sub>x</sub>Se<sub>1-x</sub>)<sub>3</sub> films with different Se doping concentrations, it is found that the MR of the Se-doped films and the WAL near the zero magnetic field are obvious, and the change is greatest at the optimal doping concentration. The magnetoconductivity (MC) data ΔG can be fitted well by the quantum interference model Hikami, Larkin, and Nagaoka (HLN) equation at magnetic fields as high as ± 7 T. This provides guidance for further research on how to enhance the TSS transport of 3D TIs.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 6","pages":"2910 - 2920"},"PeriodicalIF":3.5,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance and hydration mechanism of β-hemihydrate phosphogypsum with granulated blast furnace slag and carbide slag

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-01-15 DOI: 10.1007/s10853-025-10629-8

Qishi Zhou, Haiyang Zhu, Yonghui Zhao, Fangjie Cheng, Haodi Chen

{"title":"Performance and hydration mechanism of β-hemihydrate phosphogypsum with granulated blast furnace slag and carbide slag","authors":"Qishi Zhou, Haiyang Zhu, Yonghui Zhao, Fangjie Cheng, Haodi Chen","doi":"10.1007/s10853-025-10629-8","DOIUrl":"10.1007/s10853-025-10629-8","url":null,"abstract":"<div><p>Β-hemihydrate phosphogypsum (HPG) is a building material produced by low-temperature calcination of phosphogypsum, which has the potential to replace cement. However, some defects limit its utilization. In this research work, a ternary solid waste cementitious material system was established by incorporating granulated blast furnace slag (GBFS) and carbide slag (CS) into the HPG system to improve the working performance, strength, and water resistance. The microstructure and phase composition of the hydration products and the hydration process were investigated by SEM, XRD, thermogravimetric analysis, and hydration heat. The results showed that the 28 d compressive strength and softening coefficient could reach 57.5 MPa and 0.91, respectively. The introduction of CS provided the initial alkalinity for the depolymerization of GBFS to form AFt and C-S-H gel, reducing the hydration heat release rate and optimizing the microstructure. The cost of HPBCM was less than 1/2 of cement, and the carbon emission was only 1/10 of cement, which possessed good environmental and economic benefits. The research results can help the promotion and application of the three solid wastes.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 6","pages":"3162 - 3177"},"PeriodicalIF":3.5,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent advances on support materials for enhanced Pt-based catalysts: applications in oxygen reduction reactions for electrochemical energy storage

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-01-15 DOI: 10.1007/s10853-025-10606-1

Feng Zhan, Lingyun Huang, Yue Luo, Muyang Chen, Rui Tan, Xinhua Liu, Gang Liu, Zhiming Feng

{"title":"Recent advances on support materials for enhanced Pt-based catalysts: applications in oxygen reduction reactions for electrochemical energy storage","authors":"Feng Zhan, Lingyun Huang, Yue Luo, Muyang Chen, Rui Tan, Xinhua Liu, Gang Liu, Zhiming Feng","doi":"10.1007/s10853-025-10606-1","DOIUrl":"10.1007/s10853-025-10606-1","url":null,"abstract":"<div><p>As the demand for sustainable energy solutions grows, developing efficient energy conversion and storage technologies, such as fuel cells and metal-air batteries, is vital. Oxygen Reduction Reaction (ORR) is a significant limitation in electrochemical systems due to its slower kinetics. Although Pt-based catalysts are commonly used to address this challenge, their high cost and suboptimal performance remain significant obstacles to further development. This review offers a comprehensive overview of advanced support materials aimed at improving the efficiency, durability, and cost-effectiveness of Pt-based catalysts. By examining a range of materials, including mesoporous carbon, graphene, carbon nanotubes, and metal oxides, the review clarifies the relationship between the structural properties of these supports and their influence on ORR performance. Additionally, it discusses the fundamental characteristics of these materials, their practical applications in fuel cells, and explores potential solutions and future directions for optimizing Pt-based catalysts to advance sustainable energy conversion technologies. Future research could focus on nano-engineering and composite material development to unlock the full potential of Pt-based catalysts, significantly enhancing their economic viability and performance in energy applications.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 5","pages":"2199 - 2223"},"PeriodicalIF":3.5,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10853-025-10606-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and anti-welding properties of dual-particle hybrid CuW composites based on binary stacking theory

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-01-15 DOI: 10.1007/s10853-025-10603-4

Xu Wang, Kexing Song, Yiming Zhang, Jiandong Xing, Jiang Feng, Tao Huang

{"title":"Preparation and anti-welding properties of dual-particle hybrid CuW composites based on binary stacking theory","authors":"Xu Wang, Kexing Song, Yiming Zhang, Jiandong Xing, Jiang Feng, Tao Huang","doi":"10.1007/s10853-025-10603-4","DOIUrl":"10.1007/s10853-025-10603-4","url":null,"abstract":"<div><p>CuW composites are widely used in the fields of high-voltage switch electrical contacts and arc extinguishers due to their good arc erosion resistance. In order to improve the compactness and arc erosion resistance of CuW composites with high W content, the dual-particle hybrid CuW75 composites with different particle sizes of 1 μm, 10 μm and 20 μm were designed based on the binary stacking theory. And the hybrid CuW75 composites with different particle size mass ratios (1 μm + 20 μm) were prepared by spark plasma sintering (SPS) and infiltration method, and the anti-welding properties of the dual-particle hybrid CuW75 composites were investigated on a JF04C electric contact testing system. The results show that the density of the dual-particle hybrid CuW75 composite (1 μm + 20 μm) with a mass ratio of 1:10 is up to 99.79%, which is 3.43% and 1.13% higher than that of the single-particle CuW75 composite with 1 μm and 20 μm, respectively. In terms of arc erosion resistance, the average welding force of the hybrid CuW75 composite (1 μm + 20 μm) with a mass ratio of 1:10 has the lowest mass loss, which is 15.2% and 15.07% lower than that of the single-particle CuW75 composite with 1 μm and 20 μm, respectively. The reason is that the dual-particle hybrid CuW75 composite can disperse the arc effectively, delay the formation of arc erosion pits on the cathode surface, and reduce the degree of arc erosion on the surface of the material. Compared with the single-particle CuW75 composite with 1 μm and 20 μm, the depth of erosion pits of the dual-particle hybrid CuW75 composite (1 μm + 20 μm) is reduced by 71.4% and 80.4%, respectively.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 6","pages":"3113 - 3128"},"PeriodicalIF":3.5,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deformation behavior and resultant microstructural evolution of Mg-11Gd-1Zn-0.5Sn-0.5Zr alloy containing LPSO phase during hot compression 含LPSO相Mg-11Gd-1Zn-0.5Sn-0.5Zr合金热压缩变形行为及显微组织演变

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-01-15 DOI: 10.1007/s10853-024-10557-z

Lianhui Li, Liang Cui, Jianchun Sha, Zhong Zhao, Jiaxin Bao, Yiqiang Yang, Mingliang Qiao, Jie Tian, Wenhong Liu, Zhiqiang Zhang

{"title":"Deformation behavior and resultant microstructural evolution of Mg-11Gd-1Zn-0.5Sn-0.5Zr alloy containing LPSO phase during hot compression","authors":"Lianhui Li, Liang Cui, Jianchun Sha, Zhong Zhao, Jiaxin Bao, Yiqiang Yang, Mingliang Qiao, Jie Tian, Wenhong Liu, Zhiqiang Zhang","doi":"10.1007/s10853-024-10557-z","DOIUrl":"10.1007/s10853-024-10557-z","url":null,"abstract":"<div><p>The flow stress behavior and microstructure evolution of the Mg-11Gd-1Zn-0.5Sn-0.5Zr alloy under thermal compression have been studied in detail. The results show that the flow stress of the alloy decreases with increase in temperature and decrease in strain rate. The activation energy of the alloy was found to be as high as 272.48 kJ/mol by constructing the constitutive equation, which was attributed to the dislocation hindrance of the dense LPSO phase and its kink bands. As the temperature increases, the deformation mechanism gradually shifts from prismatic slip to pyramid slip, and 450 °C is a watershed. Twins and kinks also play an important role in the plastic deformation process. In addition to the particle stimulated nucleation (PSN) mechanism of fragmentary precipitates, dynamic recrystallization (DRX) nucleation can also be stimulated by twins and kink bands due to high stress concentration. However, the large-size and dense lamellar LPSO phase inhibits the nucleation and growth of DRX. When the strain temperature reaches 450 °C or even 500 °C, the LPSO phase in the alloy gradually dissolves into fragments, and the particle stimulated nucleation mechanism promotes the formation of DRX, while reducing the resistance of grain boundary movement to facilitate the growth of DRX.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 4","pages":"2095 - 2117"},"PeriodicalIF":3.5,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ characterization of temperature-dependent domain structure and permittivity of KTN crystals with applied field

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-01-15 DOI: 10.1007/s10853-024-10588-6

Wendie Chen, Bing Liu, Songtao Fan, Fulin Zhang, Yuguo Yang, Yuanyuan Zhang, Rui Zhang, Huajian Yu, Chengcheng Qiu, Xuping Wang

{"title":"In-situ characterization of temperature-dependent domain structure and permittivity of KTN crystals with applied field","authors":"Wendie Chen, Bing Liu, Songtao Fan, Fulin Zhang, Yuguo Yang, Yuanyuan Zhang, Rui Zhang, Huajian Yu, Chengcheng Qiu, Xuping Wang","doi":"10.1007/s10853-024-10588-6","DOIUrl":"10.1007/s10853-024-10588-6","url":null,"abstract":"<div><p>Potassium tantalate niobate crystals exhibit excellent electro-optic properties in both tetragonal and cubic phases. However, domain walls typically induce light scattering, requiring high voltage poling to achieve transparency. This work investigated the effect of applied voltage during poling on the domain structure and permittivity of KTN crystals. As the applied external voltage increases, the dielectric permittivity first increases and then decreases. During this process, the domain walls of the crystal first become more densely packed and are subsequently eliminated by poling. The observed changes in the dielectric constant were explained using the modified Johnson model. By comparing the poling effects at different temperatures, it was obtained that the range of 3–5 °C below the Curie temperature is the optimal poling temperature range. By comparing the temperature-dependent permittivity under different voltages, it was found that the applied voltage can cause changes in the Curie temperature of the crystal. The relaxation factor of the KTN crystal under different voltages was obtained by fitting the temperature-dependent permittivity, showing that low electric fields can enhance the relaxation performance of ferroelectric materials. Finally, to verify the application effects of poled crystals, the evolution of domain structures under combined electrical and thermal influences was investigated. It was concluded that poled crystals near the Curie temperature are particularly sensitive to thermal effects, leading to the re-emergence of domain walls and reduced transparency. However, applying higher external voltages effectively prevents the formation of domain walls and minimizes light scattering.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 5","pages":"2478 - 2491"},"PeriodicalIF":3.5,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The physical properties of new MAX phase Zr3XC2(X=Cd, Sb): A DFT investigation

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-01-15 DOI: 10.1007/s10853-025-10596-0

Lei Sun, Linjie Miao, Yong Cao

引用次数: 0

Radiative and non-radiative transfers in co-doped graphene quantum dots 共掺杂石墨烯量子点的辐射和非辐射转移

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-01-14 DOI: 10.1007/s10853-024-10589-5

Pham Thu Nga, Nguyen Thi Mai Huong, Le Xuan Hung, Dao Nguyen Thuan, Nguyen Tien Thanh, Yann Bretonnière, Frédéric Lerouge, Alizée Roux, Julien Laverdant

{"title":"Radiative and non-radiative transfers in co-doped graphene quantum dots","authors":"Pham Thu Nga, Nguyen Thi Mai Huong, Le Xuan Hung, Dao Nguyen Thuan, Nguyen Tien Thanh, Yann Bretonnière, Frédéric Lerouge, Alizée Roux, Julien Laverdant","doi":"10.1007/s10853-024-10589-5","DOIUrl":"10.1007/s10853-024-10589-5","url":null,"abstract":"<div><p>Doping of luminescent quantum dots is needed to control their optical properties. Inserting defects may change the band gap of the photoluminescence emission as well as their emission rates both radiative and non-radiative. Several doping materials in graphene quantum dots (GQDs) have been previously studied. In this paper, we present the influence of single doping (nitrogen) and co-doping (nitrogen–sulfur) on the optical properties of GQDs. Systematic analysis of the quantum yield in correlation with lifetime measurements enables the extraction of both radiative and non-radiative transfers. By changing the ratio of carbon supply over (S,N) dopants, we can control the emission quantum yield by modifying the radiative and non-radiative transfer rates. Based on our results, we propose an optimal doping concentration for higher quantum yield that maximizes radiative transfers.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 4","pages":"1982 - 1993"},"PeriodicalIF":3.5,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wire arc additive manufacturing of CuAl8Ni2/42CrMo bimetallic deposition: microstructure and properties

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-01-14 DOI: 10.1007/s10853-024-10578-8

Zheng Xu, Xianfen Li, Siyuan Li, Ruize Jiang, Peng Hua, Dashuang Liu

{"title":"Wire arc additive manufacturing of CuAl8Ni2/42CrMo bimetallic deposition: microstructure and properties","authors":"Zheng Xu, Xianfen Li, Siyuan Li, Ruize Jiang, Peng Hua, Dashuang Liu","doi":"10.1007/s10853-024-10578-8","DOIUrl":"10.1007/s10853-024-10578-8","url":null,"abstract":"<div><p>Due to its remarkable strength and toughness, 42CrMo steel finds extensive application in shipbuilding as well as various industrial sectors. Nevertheless, it exhibits inadequate surface corrosion resistance and is prone to damage from prolonged exposure within marine environments. In order to improve its surface corrosion resistance, multi-pass nickel–aluminum bronze (NAB) alloy deposition layers were prepared on the surface of 42CrMo steel using wire arc additive manufacturing (WAAM) technology, and the effect of overlap rate on the microstructure and properties of the deposition layers was investigated thoroughly. The results show that the CuAl8Ni2/42CrMo bimetallic deposition exhibits excellent metallurgical bonding and properties. The deposited layer contains various phase structures of α-Cu phase, β/β′ phase, and weak κ phase. With the increase in overlap rate, the microstructure of the overlap region changes with the increase in iron-rich dendrites and coarse columnar crystals, and the increase of element diffusion at the interface. The microhardness of the deposited layer peaks at 40% overlap rate (159.5 HV), and the highest tensile strength (628.8 MPa) appears in the parallel weld direction of the sample at 30% overlap rate. 40% overlap rate also exhibits the best corrosion resistance, with a corrosion current density (<i>I</i><sub>corr</sub>) of 6.559 μA/cm<sup>2</sup>, and the corrosion rate decreases to 0.0341 mm/y after 27 days of static immersion, which is attributable to the formation of Al<sub>2</sub>O<sub>3</sub> and Cu<sub>2</sub>O protective films formed on the surface effectively mitigated the corrosion.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 5","pages":"2623 - 2639"},"PeriodicalIF":3.5,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid pyrolysis-based fabrication of high-performance electrochromic WO3 films using polyethylene glycol as a pore-forming agent

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-01-14 DOI: 10.1007/s10853-025-10616-z

Ziming Zheng, Jingjing Li, Xiaofei Dong, Zifeng Zeng, Kunhong Lin, Jingling Li

{"title":"Rapid pyrolysis-based fabrication of high-performance electrochromic WO3 films using polyethylene glycol as a pore-forming agent","authors":"Ziming Zheng, Jingjing Li, Xiaofei Dong, Zifeng Zeng, Kunhong Lin, Jingling Li","doi":"10.1007/s10853-025-10616-z","DOIUrl":"10.1007/s10853-025-10616-z","url":null,"abstract":"<div><p>The development of a simple and efficient method for preparing porous tungsten trioxide (WO<sub>3</sub>) electrochromic films using structure-directing agents is highly urgent for their industrialization. To this end, this work presents an efficient approach using rapid co-pyrolysis of polyethylene glycol 400 (PEG-400) and ammonium metatungstate (AMT) to produce mesoporous WO<sub>3</sub> thin films. The findings indicate that the concentration of PEG influences both the wettability of the precursor solution on the FTO substrate and the state of the PEG micelle solution, ultimately leading to WO<sub>3</sub> films with diverse morphologies after the co-pyrolysis of AMT and PEG. The porous structure significantly enhances hydrogen ion intercalation/deintercalation, and thus improves electrochromic properties. The optimized electrochromic films demonstrate a 54.5% optical modulation range at 633 nm, fast switching times (2.8 s for coloration and 1.5 s for bleaching), and a coloration efficiency of 83.2 cm<sup>2</sup> C⁻<sup>1</sup>. In pursuit of broader optical modulation capabilities, we further innovated by developing a multilayer porous film strategy, enabling precise control over thickness through repeated spin-coating/heating cycles. Remarkably, a three-layer configuration achieved an extraordinary optical modulation of up to 87.2%, ranking among the best performances reported in the electrochromic field. This novel methodology paves the way for expedited manufacturing of porous amorphous metal oxide films and positions the enhanced WO<sub>3</sub> film as a highly promising candidate for advanced electrochromic technologies.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 5","pages":"2297 - 2313"},"PeriodicalIF":3.5,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0