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Interfacial Charge Transfer in ZnO/COF S-Scheme Photocatalyst via Zn─N Bond

advanced materials 2025年 e2505088页

作者： Meng, Kai Zhang, Jianjun Zhu, Bicheng Jiang, Chuanjia García, Hermenegildo Yu, Jiaguo State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Material Science and Engineering Wuhan University of Technology Wuhan430070 China Laboratory of Solar Fuel Faculty of Materials Science and Chemistry China University of Geosciences Wuhan430078 China College of Environmental Science and Engineering Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution Control Nankai University Tianjin300350 China Universitat Politècnica de València Valencia46022 Spain

Photocatalysis is a promising solution to global energy shortage and environmental problems. Inspired by photosynthesis, multicomponent heterostructured photocatalysts are extensively investigated, and step-scheme (S-scheme) heterojunction has emerged as the theoretical basis for delineating charge transfer processes in predominant heterostructured photocatalysts. However, the specific charge transfer pathway across an S-scheme heterojunction remains elusive from an atomic/molecular perspective. Herein, it is demonstrated that in S-scheme heterojunction photocatalysts composed of imine-based covalent organic frameworks and nanostructured zinc oxide, interfacial Zn─N bonds are formed between the two components and play critical roles as a charge transfer gateway in the S-scheme heterojunction, based on theoretical calculations, X-ray absorption spectroscopy, and X-ray photoelectron spectroscopy. Moreover, mechanisms for enhanced charge transfer across the S-scheme heterojunction are elucidated using femtosecond transient absorption spectroscopy. This work provides new insights into molecular-level understanding of charge transfer mechanisms in S-scheme heterojunction photocatalysts for promoting energy and environmental applications of artificial photosynthesis. © 2025 Wiley-VCH GmbH.

关键词： Transient absorption spectroscopy

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Engineering Triple Phase Interface and Axial Coordination Design of Single-Atom Electrocatalysts for Rechargeable Zn─air Batteries

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Small 2025年 e2412696页

作者： Hua, Chun Ye, Daixin Chen, Cong Sun, Congli Fang, Jianhui Liu, Lijia Bai, Hui Tang, Ya Zhao, Hongbin Zhang, Jiujun Department of Chemistry & Institute for Sustainable Energy/College of Sciences Shanghai University Shanghai200444 China States State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Department of Chemistry Western University 1151 Richmond Street LondonONN6A5B7 Canada State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of Technology Shanxi Taiyuan030024 China

Bifunctional electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are highly desirable for rechargeable Zn─air batteries (rZABs). Herein, a space optimized 3D heterostructure Co-N-C@MoS2 catalyst with Co single atom and Co cluster sites is developed by pyrolysis of ZIF-67 and in situ grown ultrathin MoS2 nanosheets. The introduced MoS2 not only has abundant defective structures, but also regulates the Co electronic distribution, thus introducing additional active sites and enhancing Co-Nx activity. In addition, the MoS2 modification leads to an appropriate increase in hydrophilicity which can make a stable liquid/gas/solid triple phase interface, facilitating the approachability of electrolytes into the porous channels and promotes the mass transfer through ensuring a favorite contact among the catalyst, electrolyte and reactants and enhancing utility of active reaction sites. Comprehensive analysis and theoretical simulation indicate that the enhancement of activity stems from the axial coordination of Co cluster over Co single-atom active sites to regulate local electronic structure, thereby optimizing the adsorption of ORR intermediates and enhancing the catalytic activity. Compared with the commercial Pt/C and IrO2, the structurally optimized Co-N-C@MoS2 catalyst displays exceptional bifunctional electrocatalytic activity and long-time stability toward both OER and ORR. Moreover, the Co-N-C@MoS2 catalyst exhibits higher peak power density and superior stability in liquid and flexible ZABs compared to the commercial Pt/C + IrO2 catalyst. © 2025 Wiley-VCH GmbH.

关键词： Electrolytic reduction

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Lifecycle Synergistic Prelithiation Strategy of Both Anode and Cathode for High-Performance Lithium-Ion Batteries

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advanced Energy materials 2025年第0期

作者： Zhong, Wei He, Renjie Peng, Linfeng Liu, Wei Peng, Jiayue Zhu, Haolin Xiang, Jingyu Cheng, Shijie Xie, Jia State Key Laboratory of Materials Processing and Die & Mould Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan430074 China

Prelithiation is recognized as an effective technology for addressing the depletion of active lithium, but conventional methods are constrained by their reliance on singular lithium replenishment mechanisms and limited functionality. Herein, a synergistic and comprehensive lifecycle prelithiation technology is introduced as applicable to both anode and cathode. For anode prelithiation, highly reactive biphenyl lithium is leveraged as a lithium replenishing agent, supplemented by functional additives, ethoxy(pentafluoro)cyclotriphosphazene (PFPN) and fluoroethylene carbonate (FEC), to generate a robust SEI enriched with Li3N, LiF, Li3P and Li2O. This approach not only compensates for the initial active lithium loss but also fortifies the structural integrity of the SEI. For cathode prelithiation, the high-capacity lithium replenisher Li2C2O4 and Li2C4O4 comprising B, N double-doped carbon loaded Mo2C-W2C (Mo-W@BNC) heterogeneous catalysts is employed, which exhibits superior catalytic performance in facilitating the release of lithium. The exceptional efficient liberations of lithium are achieved at discharge voltages of 3.78 V and 4.14 V for Li2C2O4 and Li2C2O4, respectively. The prelithiation for both anode and cathode mitigates the initial active lithium loss by 22.6%. Moreover, a singular activation during subsequent usage contributes an additional 0.8 mAh cm−2 of active lithium, achieving a capacity retention of 99.3% after 250 cycles at 0.5C. © 2025 Wiley-VCH GmbH.

关键词： Lithium-ion batteries

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An Unprecedented Efficiency with Approaching 21%Enabled by Additive‑Assisted Layer‑by‑Layer processing in Organic Solar Cells

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Nano-Micro Letters 2025年第2期17卷 372-375页

作者： Shuai Xu Youdi Zhang Yanna Sun Pei Cheng Zhaoyang Yao Ning Li Long Ye Lijian Zuo Ke Gao Key Laboratory of Advanced Green Functional Materials College of ChemistryChangchun Normal UniversityChangchun 130032People’s Republic of China Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion School of Chemistry and Chemical EngineeringShandong UniversityQingdao 266237People’s Republic of China College of Polymer Science and Engineering Sichuan UniversityChengdu 610065People’s Republic of China State Key Laboratory and Institute of Elemento‑Organic Chemistry Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071People’s Republic of China Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640People’s Republic of China Tianjin Key Laboratory of Molecular Optoelectronic Sciences School of Materials Science and EngineeringTianjin UniversityTianjin 300350People’s Republic of China State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

Recently published in Joule,Feng Liu and colleagues from Shanghai Jiaotong University reported a record-breaking 20.8%power conversion efficiency in organic solar cells(OSCs)with an interpenetrating fibril network active layer morphology,featuring a bulk p-in structure and proper vertical segregation achieved through additive-assisted layer-by-layer *** optimized hierarchical gradient fibrillar morphology and optical management synergistically facilitates exciton diffusion,reduces recombination losses,and enhances light capture *** approach not only offers a solution to achieving high-efficiency devices but also demonstrates the potential for commercial applications of OSCs.

关键词： Organic solar cells Additive-assisted layer-by-layer processing Three-dimensional fibril morphology Bulk p-i-n structure Optical management

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Vitamin C Secondary-Doped Poly(3, 4-ethylenedioxythiophene): Poly(Styrene Sulfonate) for Enhancing Conductivity and Biocompatibility for Implantation

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advanced Functional materials 2025年

作者： Wang, Yumeng Wang, Xiangya Yu, Meimei Sun, Zhijiang Liu, Rui Zhou, Suting Zhang, Yuxia Ran, Fen State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals School of Materials Science and Engineering Lanzhou University of Technology Lanzhou730050 China

Poly(3, 4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT: PSS) has garnered increasing attention due to its adjustable and enhanced electrical conductivity and ease of processing. However, for applications in bioelectronics as a conductive filler for the preparation of conductive hydrogels, further improvements in conductivity are necessary. In this study, an eco-friendly polar additive, vitamin C (VC), is introduced to simultaneously enhance the electrical conductivity and biocompatibility of PEDOT: PSS. The multiple hydroxy groups in VC impart polarity and facilitate hydrogen bonding with PSS, thereby removing excess non-conductive PSS not involved in polymerization and expanding the continuously conducting PEDOT-rich domains. Importantly, VC can regulate inflammatory factors by reducing reactive oxygen species levels, thereby effectively improving biocompatibility. Consequently, VC secondary-doped PEDOT: PSS shows potential for diverse applications due to its conductive properties, solubility, biocompatibility, and blood compatibility. A conductive hydrogel is prepared by incorporating conductive PEDOT: PSS-VC into a sodium alginate and guar gum hydrogel system. Supercapacitors with enhanced anticoagulant properties are assembled to address thrombosis, coagulation risks, and inflammatory responses in vivo. This eco-friendly doping strategy can be applied to develop high-performance, biocompatible, and implantable bioelectronics. © 2025 Wiley-VCH GmbH.

关键词： Semiconductor doping

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Ultra-rapid assembly of graphene oxide macroscopic materials enabled by low-surface-tension solvent

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Surfaces and Interfaces 2025年 67卷

作者： Zhang, Long Chen, Pengfei Wang, Zhe Feng, Hao Li, Peng Qian, Wei Fu, Huaqiang Chen, Cheng Shi, Zuhao Lv, Yong Li, Shuxin He, Daping State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Hubei Engineering Research Center of Radio Frequency Microwave Technology and Application School of Physics and Mechanics Wuhan University of Technology Wuhan 430070 China Hubei Key Laboratory of Theory and Application of Advanced Material Mechanics School of Physics and Mechanics Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Wuhan 430070 China

Two-dimensional (2D) nanomaterials assembled macroscopic materials via bottom-up approach are extensively utilized across various domains, attributable to their capacity to retain the desirable properties of individual nanosheets. However, the dense structure formed during assembly restricts solvent molecule passage, leading to prolonged preparation times. Traditional methods struggle to create larger and more solvent channels. Herein, we propose a strategy to achieve ultra-fast assembly of graphene oxide (GO) nanosheets by manipulating the solvent's surface tension to form a bouffant structure. This approach enables GO membrane assembly in only 10 s, which is 24,660 times faster than that of conventional water-based methods (over 2.85 days). Our analysis of solvents with varying surface tensions demonstrates that low surface tension, rather than solvent's relative molecular weight, significantly impacts the assembly rate. This rapid assembly process enables GO membranes to attain thicknesses of several centimeters, thereby overcoming the limitations of traditional bottom-up techniques. The resulting GO macro-materials exhibit considerable potential for diverse applications, from thin membranes for waste management to thick blocks for electromagnetic interference shielding and mechanical sensors. This work offers valuable insights into the rapid assembly of macroscopic structures from GO and potentially other 2D lamellar materials. © 2025

关键词： Graphene oxide Low surface tension Macroscopic material Solvent Ultra-rapid assembly

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Microstructures and cracking behaviors of AlCoCrFeNiTi0.2 high-entropy alloy fabricated by laser powder bed fusion

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Journal of Alloys and Compounds 2025年 1031卷

作者： Song, Xinfang Zhang, Weiran Liu, Zhuangzhuang Zhang, Yong Beijing Advanced Innovation Center of Materials Genome Engineering State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing100083 China Xi' an Rarealloys Co .Ltd Xi'an710016 China Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing100083 China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing100083 China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology Beijing Beijing100083 China Key Laboratory of Silicon-based Materials Fuyao University of Science and Technology Fuzhou350109 China

Preparing high-entropy alloys (HEAs) with BCC structure using laser powder bed fusion (L-PBF) is very challenging due to their high cracking susceptibility. In this study, the AlCoCrFeNiTi0.2 HEA with BCC+B2 structures was fabricated via L-PBF. The microstructures and cracking behaviors of the alloy were studied intensively. The results show that the alloy is mainly composed of ultra-fine equiaxed grains and contains small columnar grains, achieving the transformation from columnar to equiaxed grains. The particles with high melting points (C-rich and Al2O3 particles) and constitutional supercooling are the reasons for the formation of ultra-fine equiaxed grains. In addition, two types of cracks (i.e., solid-state cracks and solidification cracks) were identified in this alloy. The solid-state cracks are induced by the tensile and compressive stresses during L-PBF. The brittle Ti-rich, C-rich, and Al2O3 particles cause local stress concentration at grain boundaries, resulting in solidification cracks. Furthermore, the statistical results indicate that HEAs (especially BCC HEAs) are more susceptible to cracking during L-PBF when the atomic size difference δ exceeds 5 %. Narrowing the solidification temperature range and reducing the content of crack-sensitive elements (e.g., Al and Ti) are effective approaches to mitigate cracking. This study provides theoretical guidance for the successful preparation of crack-free, high-performance BCC HEAs using L-PBF in the future. © 2025

关键词： Microcracking

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Tris-based protic ionic liquids with multiple adsorption effects enabling excellent anti-wear and anti-corrosion performances

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Journal of Molecular Liquids 2025年 425卷

作者： Ge, Shanqin Chen, Long Li, Wei Cai, Qingzhao Gong, Genxiang Wu, Junhao Yu, Jinhong Nishimura, Kazuhito Jiang, Nan Cai, Tao School of Materials Science and Chemical Engineering Ningbo University Zhejiang Ningbo315211 China State Key Laboratory of Advanced Marine Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo315201 China Advanced Nano-processing Engineering Lab Mechanical Engineering Kogakuin University Tokyo192-0015 Japan

Molecular additives have garnered widespread attention in the fields of lubrication and corrosion protection due to their designable interfacial film-forming efficiency. Herein, three protic ionic liquids (PILs) with the same cation but different anions have been designed and synthesized. Their physicochemical properties, tribological properties and anti-corrosion properties were systematically investigated. Results demonstrated that under dynamic steel-on-steel friction conditions, the PILs can maximally reduce the running-in period, friction coefficient, and wear rate by 90 %, 40 %, and 97 %, respectively, compared to the commercial ionic liquid, BMIMPF6. Under static copper corrosion conditions, the PILs efficiently adsorb onto the copper surface and formed a dense oxide layer on its surface, thus achieving excellent corrosion protection for the copper substrates. Molecular dynamics (MD) simulation results indicate that the exceptional lubricity of PILs is due to its ability to rapidly adsorb onto the metal surface through multiple interaction sites on both its anionic and cationic components, thereby reducing the running-in period and swiftly establishing a lubricating film. This study provides insights into the development of molecular additives featuring multiple adsorption sites, with potential applications in the fields of tribology and corrosion engineering. © 2025

关键词： Tribology

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Low-frequency fiber-optic optoacoustic transducer arrays for large-area high-precision online non-destructive testing

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Ultrasonics 2025年 154卷 107680页

作者： Wu, Yuliang Fu, Xuelei Li, Jiapu Chen, Denghao Wang, Hongwei Yang, Shengjiang Wang, Honghai Li, Zhengying School of Information Engineering Wuhan University of Technology Hubei China National Engineering Research Center of Fiber Optic Sensing Technology and Networks Wuhan University of Technology Hubei China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei China

In Fiber-optic optoacoustic (FO-OA) non-destructive testing (NDT), expanding the ultrasonic detection range remains a critical challenge for large-area applications. While extending the detection range to larger scales necessitates addressing issues related to ultrasound intensity and propagation losses. Recent efforts have focused on enhancing ultrasound intensity, while methods to further extend the detection range by reducing ultrasound propagation losses are highly significant for ultrasonic NDT. This study introduces a frequency-selective functional layer in ultrasound transducers to effectively lower the ultrasound frequency. By incorporating polyethylene (PE) particles into the thermally expandable material to form the functional layer that enhances the attenuation of high-frequency components, the central ultrasound frequency is reduced from 1 MHz to 0.3 MHz. This approach expanded the detection area of the flat plate structure to 90 × 54 cm2. A 6-element FO-OA transducer array was fabricated on a single optical fiber, enabling the successful localization of all defects on the specimen with a positioning error of 3) also yielded a low positioning error of 0.781 cm, even with multiple ultrasound propagation modes, indicating that the ultrasound with PE particles offers superior immunity to multimodal aliasing, providing a robust solution for complex media. © 2025 Elsevier B.V.

关键词： Optical fiber fabrication

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Dual-Aspect Control of Lithium Nucleation and Growth with Hydroxyapatite and Liquid Crystal Polymers for High-Performance Lithium Metal Batteries

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advanced Energy materials 2025年第0期

作者： Miao, Xiang Wu, Zhouhan Hu, Wei Guo, Lin Nan, Ce-Wen School of Chemistry Beijing Advanced Innovation Center for Biomedical Engineering Beihang University Beijing100191 China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing100084 China Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing100083 China

Lithium (Li) metal is a promising anode material for next-generation high-energy-density batteries. However, safety concerns and the limited lifespan due to Li dendrite formation hinder its practical application. The complex dendrite formation process involves nonuniform nucleation and radial growth, requiring a holistic strategy to simultaneously regulate both processes. In this work, a dual-aspect control strategy is developed by designing a protective layer composed of hydroxyapatite (HA) and a liquid crystal polymer (LCP). Electrochemical, microstructural, and computational analyses revealed that HA provides homogenous Li0 adsorption sites, enhancing Li nucleation kinetics and uniformity. Meanwhile, the LCP self-assembles into cation-selective channels, promoting Li-ion diffusion and regulating growth direction. This dual-aspect control significantly improved Li plating kinetics and mitigated Li dendrite formation. Benefiting from this strategy, the symmetric cell achieved a critical current density of 5 mA cm−2 and maintained a lifespan of 500 h at 3 mA cm−2. Furthermore, in Li–sulfur batteries, the cell exhibited exceptional high-rate cycling performance (>10 mA cm−2) with an average capacity decay rate of only 0.056% over 1000 cycles. These results highlight the effectiveness of dual-aspect control in suppressing Li dendrites and improving high-rate cycling stability. © 2025 Wiley-VCH GmbH.

关键词： Liquid crystals

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