Science China Materials最新文献_第4页

Surface octahedra isolation treatment enables silicon-rivaling outdoor stability in industrial-scale perovskite solar modules 表面八面体隔离处理使工业规模钙钛矿太阳能组件的室外稳定性与硅相媲美

IF 8.1 2区材料科学

Science China Materials Pub Date : 2025-07-29 DOI: 10.1007/s40843-025-3554-7

Junyi Jiang, Xiuwen Xu

引用次数: 0

Effect of TiB2 particles on the thermal deformation and recrystallization behaviour of Al-Cu-Mg alloys TiB2颗粒对Al-Cu-Mg合金热变形和再结晶行为的影响

IF 7.4 2区材料科学

Science China Materials Pub Date : 2025-07-29 DOI: 10.1007/s40843-025-3461-5

Qifei Mao (, ), Min Hu (, ), Jiahao Wang (, ), Chong Li (, ), Jinfeng Nie (, ), Zongning Chen (, ), Yongchang Liu (, )

{"title":"Effect of TiB2 particles on the thermal deformation and recrystallization behaviour of Al-Cu-Mg alloys","authors":"Qifei Mao \u0000 (, ), Min Hu \u0000 (, ), Jiahao Wang \u0000 (, ), Chong Li \u0000 (, ), Jinfeng Nie \u0000 (, ), Zongning Chen \u0000 (, ), Yongchang Liu \u0000 (, )","doi":"10.1007/s40843-025-3461-5","DOIUrl":"10.1007/s40843-025-3461-5","url":null,"abstract":"<div>To reveal the influence of TiB2 particles on the thermal deformation behavior of Al-Cu-Mg alloys, thermal compression experiments were conducted in the temperature range of 340 to 500 °C, the strain rate range of 0.01 to 10 s−1. Arrhenius-type constitutive equations were formulated to characterize the flow behavior of the alloys, and the microstructures of the deformed alloys were analyzed. The results indicate that TiB2 particles markedly refine the grains of Al-Cu-Mg alloys from 117 to 35 µm (0.1 wt% TiB2) and 29 µm (1 wt% TiB2). Both the reduction of grain size and the presence of TiB2 particles contribute to an increased flow stress during thermal deformation. And the grain refinement induced by the addition of TiB2 particles enhances dynamic recrystallization processes. The excess TiB2 particles (1 wt% TiB2) further stimulate dynamic recrystallization via the particle-stimulated nucleation mechanism. Moreover, the addition of TiB2 particles effectively suppresses the coarsening of recrystallized grains in Al-Cu-Mg alloys following thermal deformation.\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 9","pages":"3332 - 3343"},"PeriodicalIF":7.4,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924445","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}

引用次数: 0

A strongly coupled Pt-W2N heterostructure embedded in porous carbon nanoflowers for seawater electrolysis 多孔碳纳米花中嵌入的强耦合Pt-W2N异质结构用于海水电解

IF 8.1 2区材料科学

Science China Materials Pub Date : 2025-07-29 DOI: 10.1007/s40843-025-3454-7

Zhiyuan Liu, Lulu Chen, Sixuan Huang, Meiqi Liu, Qiming Ye, Yichao Huang

{"title":"A strongly coupled Pt-W2N heterostructure embedded in porous carbon nanoflowers for seawater electrolysis","authors":"Zhiyuan Liu, Lulu Chen, Sixuan Huang, Meiqi Liu, Qiming Ye, Yichao Huang","doi":"10.1007/s40843-025-3454-7","DOIUrl":"https://doi.org/10.1007/s40843-025-3454-7","url":null,"abstract":"Constructing heterostructures with favorable catalytic activities is crucial for improving the seawater electrolysis. Herein, we report a strongly coupled Pt-W2N heterostructure embedded within porous conductive carbon nanoflowers (Pt-W2N@C) as a highly efficient and durable cathode electrocatalyst for seawater electrolysis. Through in situ Raman spectroscopy and electrochemical analysis, we elucidate that the Pt-W2N@C system leverages synergistic electronic interactions at the heterointerface to concurrently optimize the adsorption of H* and OH* intermediates while enhancing water dissociation kinetics. The optimized Pt-W2N@C catalyst exhibits superior hydrogen evolution reaction (HER) performance across acidic, neutral, and alkaline electrolytes, achieving overpotentials of 1.2, 7, and 32.2 mV, respectively, at 10 mA cm−2, significantly outperforming commercial 20 wt% Pt/C benchmarks. Notably, the Pt-W2N@C catalyst exhibits exceptional performance in alkaline seawater electrolysis, achieving ultra-low HER overpotential (163.8 mV at 700 mA cm−2) alongside superior chloride tolerance and HER performance under 0.5–2.5 M NaCl. Remarkably, in a practical seawater electrolyzer (Pt-W2N@C∥ NiFe-layered double hydroxide (LDH)), it requires only 1.992 V to drive 500 mA cm−2 while maintaining 95.8% activity retention over 80 h of continuous operation. These findings highlight the advantages of heterostructures and their cooperative effects in designing next-generation electrocatalysts for practical seawater electrolysis.\u0000","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"18 1","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924428","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}

引用次数: 0

Advanced drying method for high-efficiency, long-lifetime perovskite solar modules at the square-meter scale 先进的干燥方法，高效，长寿命的钙钛矿太阳能组件在平方米规模

IF 8.1 2区材料科学

Science China Materials Pub Date : 2025-07-29 DOI: 10.1007/s40843-025-3557-3

Qifeng Zhang, Guozhong Cao

引用次数: 0

Broad-absorbing materials for photodetectors 光电探测器用宽吸收材料

IF 7.4 2区材料科学

Science China Materials Pub Date : 2025-07-29 DOI: 10.1007/s40843-025-3577-4

Miaoyu Wang (, ), Yi Su (, ), Xianshuo Wu (, ), Shihan Zhang (, ), Zongbo Feng (, ), Shuaishuai Ding (, ), Xing Chen (, ), Fangxu Yang (, ), Lingjie Sun (, ), Xiaotao Zhang (, )

{"title":"Broad-absorbing materials for photodetectors","authors":"Miaoyu Wang \u0000 (, ), Yi Su \u0000 (, ), Xianshuo Wu \u0000 (, ), Shihan Zhang \u0000 (, ), Zongbo Feng \u0000 (, ), Shuaishuai Ding \u0000 (, ), Xing Chen \u0000 (, ), Fangxu Yang \u0000 (, ), Lingjie Sun \u0000 (, ), Xiaotao Zhang \u0000 (, )","doi":"10.1007/s40843-025-3577-4","DOIUrl":"10.1007/s40843-025-3577-4","url":null,"abstract":"<div>Broad-absorbing materials, characterized by their tunable absorption across the ultraviolet to mid-infrared spectral regions, have emerged as a crucial class of optoelectronic materials. Significant advances have been achieved in organic and inorganic materials; however, current enhancement strategies remain largely platform-specific and are not guided by a unified physical framework. To address this gap, this review introduces a three-factor physical model grounded in the theory of transition probability, thereby providing a consistent theoretical basis for understanding how electronic transitions are modulated across orbital, vibrational, and spin dimensions. Structure-mechanism-performance relationships are systematically examined in classic material platforms. In addition, the contributions of external-field enhancement mechanisms, such as plasmonic resonance, to spectral broadening and local-field enhancement are discussed. Based on clear mechanistic insight and targeted materials design, recent advances in integrating broad-absorbing materials into broadband photodetectors are highlighted, emphasizing their practical relevance. The review examines the three core challenges and mechanism-driven design strategies for high-performance broadband optoelectronic systems, providing an instructive outlook for future advancements.\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 9","pages":"3171 - 3187"},"PeriodicalIF":7.4,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924437","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}

引用次数: 0

Cation-modulated aligned arrangement of [B3O7] units in an unprecedented 2∞[B3O5] layer with remarkable birefringence [B3O7]单元在前所未有的2∞[B3O5]层中的阳离子调制排列具有显著的双折射

IF 8.1 2区材料科学

Science China Materials Pub Date : 2025-07-28 DOI: 10.1007/s40843-025-3444-0

Ziting Yan, Dongdong Chu, Zhihua Yang, Shilie Pan, Min Zhang

{"title":"Cation-modulated aligned arrangement of [B3O7] units in an unprecedented 2∞[B3O5] layer with remarkable birefringence","authors":"Ziting Yan, Dongdong Chu, Zhihua Yang, Shilie Pan, Min Zhang","doi":"10.1007/s40843-025-3444-0","DOIUrl":"https://doi.org/10.1007/s40843-025-3444-0","url":null,"abstract":"Birefringence, as a crucial linear optical property of optical crystals, is pivotal for polarization modulation in birefringent crystals and phase-matching in nonlinear optical (NLO) crystals. Based on anionic group theory, the arrangement of advantageous B–O functional motifs in borate anionic frameworks can be adjusted by rational application of modification strategies, which can effectively promote the exploration of novel structures and optimization of optical properties. In this work, two novel borates containing distinct assembly modes of [B3O7] groups, Li2Rb2BaB18O30 (LRBBO) and K0.7Rb1.3BaB6O11 (KRBBO), were designed and synthesized based on the dimension reduction strategy induced by cation modification using LiB3O5 as the parent structure. Notably, KRBBO features an unprecedented 2∞[B3O5] layered structure and exhibits significantly enhanced birefringence (Δn = 0.08@546 nm) compared to both the parent compound and other compounds consisting of only [B3O7] groups. This work provides an effective strategy for designing novel short-wavelength borate optical crystals with large birefringence and enhancing the birefringence of [B3O7]-based NLO crystals to expand the deep-ultraviolet phase-matching capability.\u0000","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"56 1","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924423","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}

引用次数: 0

Molecular engineering of buckybowl trichalcogenasumanene toward centimeter-sized organic single-crystal arrays and devices 面向厘米级有机单晶阵列和器件的巴基碗式三卤萘烯分子工程

IF 8.1 2区材料科学

Science China Materials Pub Date : 2025-07-28 DOI: 10.1007/s40843-025-3453-y

Hongsong Liu, Xinzi Tian, Shitao Wang, Cong Zhang, Guangxin Sun, Cheng Jiang, Beibei Fu, Ziyang Zhang, Xiangfeng Shao, Rongjin Li

{"title":"Molecular engineering of buckybowl trichalcogenasumanene toward centimeter-sized organic single-crystal arrays and devices","authors":"Hongsong Liu, Xinzi Tian, Shitao Wang, Cong Zhang, Guangxin Sun, Cheng Jiang, Beibei Fu, Ziyang Zhang, Xiangfeng Shao, Rongjin Li","doi":"10.1007/s40843-025-3453-y","DOIUrl":"https://doi.org/10.1007/s40843-025-3453-y","url":null,"abstract":"Organic semiconductor single-crystal (OSSC) arrays, with superior charge transport and well-aligned properties, are emerging as a fascinating platform for high-performance integrated electronic and optoelectronic applications. Taking advantage of the solution processability of organic semiconductors, solution self-assembly OSSC arrays hold great potential for achieving cost-effective manufacturing of large-area and flexible electronics. While the rational design of molecular building blocks for regulating crystal growth has been achieved, the fundamental principles of molecular structure design for one-dimensional (1D) crystalline nanostructures and the impact of intermolecular interactions in molecular self-assembly remain unclear, limiting the practical application of the solution self-assembly. Drawing inspiration from the concave-convex packing preferences of bowl-shaped polyaromatic hydrocarbons, we propose an innovative molecular engineering strategy for hetero-buckybowl trichalcogenasumanenes to direct the self-assembly of OSSC arrays. The distinctive molecular architecture of trichalcogenasumanenes promotes the formation of 1D crystal arrays via directional concave-convex π-π interactions while effectively suppressing intercolumnar coupling, enhancing structural anisotropy and charge transport properties. Accordingly, the centimeter-sized OSSC arrays are obtained on various substrates via solution self-assembly. Furthermore, high-performance organic field-effect transistors (OFETs) based on these OSSC arrays demonstrate mobility values up to 0.89 cm2 V−1 s−1 with small device-to-device variation, superior to previous buckybowl-based devices. This molecular engineering strategy significantly enhances crystallinity and uniformity, providing a pathway for high-performance, large-area organic electronics.\u0000","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"23 1","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924431","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}

引用次数: 0

Multisite-steered C–C coupling for photocatalytic air-concentration CO2 reduction into C2H6 光催化空气浓度CO2还原成C2H6的多位点导向C-C耦合

IF 8.1 2区材料科学

Science China Materials Pub Date : 2025-07-25 DOI: 10.1007/s40843-025-3464-4

Guangbing Huang, Dongpo He, Ziyao Zhou, Wensheng Yan, Yang Pan, Jun Hu, Junfa Zhu, Xiaodong Zhang, Yuming Dong, Jiaqi Xu, Xingchen Jiao

{"title":"Multisite-steered C–C coupling for photocatalytic air-concentration CO2 reduction into C2H6","authors":"Guangbing Huang, Dongpo He, Ziyao Zhou, Wensheng Yan, Yang Pan, Jun Hu, Junfa Zhu, Xiaodong Zhang, Yuming Dong, Jiaqi Xu, Xingchen Jiao","doi":"10.1007/s40843-025-3464-4","DOIUrl":"https://doi.org/10.1007/s40843-025-3464-4","url":null,"abstract":"Efforts to photoconvert carbon dioxide (CO2) into C2 products are primarily hindered by the significant energy barrier of C–C coupling step. Herein, we incorporate active metal particles with localized surface plasmon resonance on metal oxide nanosheets. Also, we construct multiple metal pair sites to boost C–C coupling, thus promoting the formation of C2 fuels. Taking Au nanoparticles on the Bi4Ti3O12 nanosheets as an example, high-resolution transmission electron microscopy images and X-ray photoelectron spectroscopy illuminate the Au-Ti metal pair sites on the Au-Bi4Ti3O12 nanosheets. In situ Fourier transform infrared spectra reveal the presence of the *OCCOH intermediate on the surface of Au-Bi4Ti3O12 nanosheets during CO2 photoreduction, while the intermediate is not detected on the Bi4Ti3O12 nanosheets. Accordingly, the Au-Bi4Ti3O12 nanosheets realize photoreduction of atmospheric-concentration CO2 into ethane using a single catalyst. By contrast, the Bi4Ti3O12 nanosheets alone are limited to producing C1 products such as carbon monoxide and methane.\u0000","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"203 1","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924440","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}

引用次数: 0

Electron and proton separation on Ru-based catalysts promotes ammonia synthesis 钌基催化剂上的电子和质子分离促进了氨的合成

IF 8.1 2区材料科学

Science China Materials Pub Date : 2025-07-25 DOI: 10.1007/s40843-025-3476-4

Jiangli Wang, Chunhong Chen, Haiyan Wang

引用次数: 0

Photon-avalanching holmium nanoparticles for multicolor super-resolution imaging 用于多色超分辨率成像的光子雪崩钬纳米粒子

IF 8.1 2区材料科学

Science China Materials Pub Date : 2025-07-25 DOI: 10.1007/s40843-025-3556-6

Yixuan Lu, Ping Huang, Xueyuan Chen

引用次数: 0