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Integrated core-shell structured polyimide thermoelectric fiber with latent light-driven damage detection and self-driven temperature sensing performance

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Chemical Engineering Journal 2025年 515卷

作者： Yu, Zhicai Qu, Xueru Zhou, Mi Mia, Md Hasib Hou, Lin Wang, Yudong Xu, Jie Huang, Lele Zhang, Liulu Zeng, Qianyu He, Hualing State Key Laboratory of New Textile Materials and Advanced Processing School of Textile Science and Engineering Wuhan Textile University Wuhan430200 China College of Biological and Chemical Engineering Guangxi University of Science & Technology Liuzhou545006 China Shaanxi Yuanfeng Prosafe Co. Ltd Xi'an710025 China

The rapid advancement of flexible electronics imposes escalating demands on high-performance thermoelectric materials, particularly in extreme environments such as fire rescue operations, where mechanical stability and multifunctionality must be synergistically integrated. This study, developed a polyimide (PI)-based core sheath thermoelectric fiber (PT-SCF) with adjustable pore networks using non-solvent induced phase separation assisted coaxial wet spinning technique. The fiber sheath layer uses PI as the substrate, and polyvinyl alcohol (PVA) as the pore regulator agent to regulate the pore size (∼1.77–3.23 µm), while the introduction of 2D MXene nanosheets endowed the fiber with the ability of temperature sensing (maximum output voltage of 7.9 mV). The fiber core layer combines thermoplastic polyurethane (TPU) and ultraviolet (UV) photosensitive materials (UVs) to achieve fiber damage detection through a UV light-driven mechanism. The optimized PT-SCF has excellent mechanical properties (4.1 MPa, (R-R0)/R0 2 = 0.99). In addition, the PT-SCF realizes fast high-temperature warning in 1.6 s. Its integration with a multi-level temperature threshold high-temperature warning system highlights its potential for applications in smart fire-fighting systems and wearable electronic devices. This work presents a novel approach for designing and developing multifunctional thermoelectric fibers tailored to various harsh environments. © 2025 Elsevier B.V.

关键词： Flexible electronics

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Back Cover Image, Volume 6, Number 10, October 2024

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Carbon Energy 2024年第10期6卷

作者： Qihang Ding Zewen Jiang Kean Chen Hui Li Jingzhe Shi Xinping Ai Dingguo Xia Hubei Key Lab of Electrochemical Power Sources College of Chemistry & Molecular Science Wuhan University Wuhan China Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials College of Engineering Peking University Beijing China State Key Laboratory of New Textile Materials & Advanced Processing Technologies Wuhan Textile University Wuhan China Wuhan Britain-China School Wuhan China

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Atomic Interface Engineering of Single-Atom Pt/TiO2-Ti3C2 for Boosting Photocatalytic CO2 Reduction

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Small 2023年第34期19卷

作者： Li, Han Song, Qinjun Wan, Sijie Tung, Ching-Wei Liu, Chengyuan Pan, Yang Luo, GuoQiang Chen, Hao Ming Cao, Shaowen Yu, Jiaguo Zhang, LianMeng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Department of Materials Engineering Ming Chi University of Technology New Taipei City24301 Taiwan National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei230026 China Department of Chemistry National Taiwan University Taipei10617 Taiwan Graduate Institute of Nanomedicine and Medical Engineering College of Biomedical Engineering Taipei Medical University Taipei11031 Taiwan Laboratory of Solar Fuel Faculty of Materials Science and Chemistry China University of Geosciences Wuhan430074 China

Solar-driven CO2 conversion into valuable fuels is a promising strategy to alleviate the energy and environmental issues. However, inefficient charge separation and transfer greatly limits the photocatalytic CO2 reduction efficiency. Herein, single-atom Pt anchored on 3D hierarchical TiO2-Ti3C2 with atomic-scale interface engineering is successfully synthesized through an in situ transformation and photoreduction method. The in situ growth of TiO2 on Ti3C2 nanosheets can not only provide interfacial driving force for the charge transport, but also create an atomic-level charge transfer channel for directional electron migration. Moreover, the single-atom Pt anchored on TiO2 or Ti3C2 can effectively capture the photogenerated electrons through the atomic interfacial Pt-O bond with shortened charge migration distance, and simultaneously serve as active sites for CO2 adsorption and activation. Benefiting from the synergistic effect of the atomic interface engineering of single-atom Pt and interfacial Ti-O-Ti, the optimized photocatalyst exhibits excellent CO2-to-CO conversion activity of 20.5 µmol g−1 h−1 with a selectivity of 96%, which is five times that of commercial TiO2 (P25). This work sheds new light on designing ideal atomic-scale interface and single-atom catalysts for efficient solar fuel conversation. © 2023 Wiley-VCH GmbH.

关键词： Titanium dioxide

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Accelerated High-Temperature Creep Failure Induced by Internal Nitridation of In617 Superalloy

SSRN

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SSRN 2022年

作者： Wang, Yue Liu, Qu Li, Kejian Cai, Zhipeng Shi, Li Wang, Haitao Institute of Nuclear and New Energy Technology Tsinghua University Beijing100084 China Department of Mechanical Engineering Tsinghua University Beijing100084 China Key Laboratory for Advanced Materials Processing Technology Ministry of Education Beijing100084 China State Key Laboratory of Tribology Tsinghua University Beijing100084 China Collaborative Innovation Center of Advanced Nuclear Energy Technology Tsinghua University Beijing100084 China

Internal nitridation behavior was investigated in high-temperature creep experiments of IN617 superalloy. The results exhibited that nitrogen in air influenced microstructure significantly and deteriorated creep life to the level far below the fitting Larson-Miller curve. As compared to oxidation that occurred on the surface, nitridation could penetrate into interior regions of IN617. Furthermore, substantial nitrides, including π phase, AlN, Cr2N and (Ti,Cr)N, were found to precipitate in IN617 with different morphologies and orientations. The formation of plentiful brittle π phase and AlN in high-temperature duration was dominantly responsible for creep property deterioration. © 2022, The Authors. All rights reserved.

关键词： Superalloys

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High-conductivity free-standing Li_(6)PS_(5)Cl/poly(vinylidene difluoride)composite solid electrolyte membranes for lithium-ion batteries

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Journal of Materiomics 2020年第1期6卷 70-76页

作者： Shuo Wang Xue Zhang Sijie Liu Chengzhou Xin Chuanjiao Xue Felix Richter Liangliang Li Lizhen Fan Yuanhua Lin Yang Shen Jurgen Janek Ce-Wen Nan State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Institute of Physical Chemistry&Center for Materials Research Justus-Liebig-University GiessenHeinrich-Buff-Ring 17D-35392GiessenGermany Institute of Advanced Materials and Technology University of Science and Technology BeijingBeijing100083China

Bulk-type all-solid-state batteries(ASSBs)using sulfide solid electrolyte are considered as a promising alternative to commercial lithium-ion batteries owing to their high energy density and ***,cell energy density is often comparatively low due to use of a thick solid electrolyte separator and a lithium alloy as *** achieving high-performance ASSBs,creating a thin free-standing electrolyte with high-conductivity and good cycling stability against lithium anode is *** this work,we present Li_(6)PS_(5)Cl/poly(vinylidene difluoride)(LPSCl/PVDF)composite electrolytes prepared by a slurry *** influence of the PVDF content on the microstructure,morphology,ionic conductivity and activation energy of the LPSCl/PVDF electrolytes is systematically ***-standing LPSCl/PVDF membranes with a thickness of 100-120 mm and a high ionic conductivity of about 1·10^(-3) S cm^(-1) at 25℃ are *** adding PVDF to the LPSCl electrolyte,the cycling stability of the LPSCl electrolyte against lithium metal improves ***,LPSCl/PVDF composite electrolytes are promising candidates to be used in ASSBs.

关键词： Composite solid electrolyte Li_(6)PS_(5)Cl Poly(vinylidene difluoride)

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The Quantizable Contribution of Epdd, Sblc, and Iblc Effects to Colossal Permittivity in La-Doped Batio3 Ceramic

SSRN

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SSRN 2022年

作者： Meng, Yingzhi Liu, Kang Lei, Xiuyun Li, Chunchun Yang, Zhao Wang, Dawei Zhang, Qi Zhang, Hongfang Yan, Shiguang Chen, Jun Liu, Laijun Key Laboratory of Nonferrous Materials and New Processing Technology Ministry of Education Guilin University of Technology Guilin541004 China Guangxi Key Lab of Optical and Electronic Functional Materials and Devices Guilin University of Technology Guilin541004 China College of Materials Science and Engineering Guilin University of Technology Guilin541004 China State Key Laboratory of Advanced Materials and Electronic Components Guangdong Fenghua Advanced Technology Holding Co. Ltd. Zhaoqing526060 China School of Microelectronics State Key Laboratory for Mechanical Behaviour of Materials Xi’an Jiaotong University Xi’an China BC Materials Basque Center for Materials Application & Nanostructures Basque Spain School of Physical Science and Technology Suzhou University of Science and Technology Suzhou215009 China Key Laboratory of Inorganic Functional Materials and Devices Shanghai Institute of Ceramics Chinese Academy of Sciences 1295 Dingxi Road Shanghai200050 China Beijing Advanced Innovation Center for Materials Genome Engineering Department of Physical Chemistry University of Science and Technology Beijing Beijing100083 China

关键词： Capacitance

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Fabrication plate-like BaBi_(4)Ti_(4)O_(15) single-crystalline particles by the molten salt synthesis method

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Journal of advanced Dielectrics 2023年第2期13卷 6-12页

作者： Xiaoying Feng Bei Xu Xiaoyu Xu Penghui Chen Zhuozhao Wu Duo Teng Jie Xu Feng Gao State Key Laboratory of Solidification Processing MIIT Key Laboratory of Radiation Detection Materials and DevicesUSI Institute of Intelligence Materials and Structure NPU-QMUL Joint Research Institute of Advanced Materials and Structure School of Materials Science and EngineeringNorthwestern Polytechnical University Xi’an 710072P.R.China Queen Mary University of London Engineering School Northwestern Polytechnical University Xi’an 710072P.R.China School of Marine Science and Technology Northwestern Polytechnical University Xi’an 710072P.R.China Guangzhou Newlife New Material Co. LtdGuangzhou 511356P.R.China

Plate-like single-crystalline BaBi_(4)Ti_(4)O_(15) particles were synthesized by the molten salt synthesis(MSS)*** effects of sintering temperature,holding time,and NaCl-KCl molten salt content on the phase structure and morphology of plate-like BaBi_(4)-Ti_(4)O_(15) particles were *** results show that plate-like BaBi_(4)Ti_(4)O_(15) particles can be synthesized when the sintering temperature is above 800°*** size of particles increases with increasing sintering temperature and molten salt *** anisotropic plate-like BaBi_(4)Ti_(4)O_(15) particles with diameter≥10μm and thickness of~0.3μm can be obtained under the optimum process *** crystal structure of BaBi_(4)Ti_(4)O_(15) was determined as A21am by TEM,which should be attributed to the Bi3+and Ba2+diffusing into[TiO6]octahedrons.

关键词： Molten salt synthesis method calcining condition salts content microplatelets anisotropy

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All-weather highly efficient degradation of persistent organic pollutants over RhB-sensitized BiOCl under natural sunlight

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Journal of Environmental Chemical Engineering 2025年第4期13卷

作者： Wen Sun Chunping Su Wei Zhang Hui Li Huiping Zhao Rong Chen State Key Laboratory of New Textile Materials and Advanced Processing Wuhan Textile University Wuhan 430200 PR China Engineering Research Center for Clean Production of Textile Printing and Dyeing Ministry of Education Wuhan Textile University Wuhan 430200 PR China School of Chemistry and Environmental Engineering Wuhan Institute of Technology Donghu New & High Technology Development Zone Wuhan 430205 PR China

Persistent organic pollutants (POPs) pose significant environmental and health risks due to their stability, toxicity, and propensity for bioaccumulation. Traditional treatment methods often fall short in effectively degrading these pollutants, facing challenges such as high costs, low efficiency, and particularly inadequate mineralization rates. In this study, we employ Rhodamine B (RhB) to sensitize BiOCl, thereby significantly broadening its spectral absorption range. The RhB-sensitized BiOCl demonstrates remarkable photocatalytic activity under both visible light and natural sunlight, achieving rapid degradation and high mineralization of Bisphenol A (BPA). BPA degradation experiments were conducted under natural light across various seasons (from March to October), at different times of the day (from sunrise to sunset), and under diverse weather conditions (sunny, cloudy and rainy). The results confirmed the significant capability and universality of RhB-sensitized BiOCl in rapidly degrading BPA at varying concentrations under natural light conditions. The primary reactive oxygen species (ROS) involved in BPA degradation along with potential degradation pathways were identified under both visible light and real sunlight. Additionally, RhB-sensitized BiOCl exhibits high degradation efficiency for other POPs such as phenol, 4-chlorophenol, and 2,4-dichlorophenol, thus showcasing broad applicability in treating wastewater contaminated with POPs. This study indicates that dye-sensitized BiOCl offers a viable, sustainable, and efficient solution for the remediation of POPs under natural light conditions.

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Strain Sensing Elastic Core-Spun Yarns Based on Long Silver Nanowires

Strain Sensing Elastic Core-Spun Yarns Based on Long Silver ...

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作者： Liping Jia Qi Zeng Quanquan Zhu Runxuan Cai Wei Guo Jianhua Ran Shuguang Bi Shiwei Li Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing State Key Laboratory of New Textile Materials and Advanced Processing TechnologiesCollege of Chemistry and Chemical EngineeringWuhan Textile University Department of Biochemistry & Molecular & Cellular Biology Georgetown University College of Physical Education Jianghan University

Strain sensing is one of the important functions of intelligent fabric,which can transform the external stress(or strain) into visible electrical signals and monitor the characteristics of human physiology and *** present,the flexible strain sensor has low sensitivity,small strain range and unstable performance after repeated *** this work,core-spun yarns with polyurethane(PU) filament as core and long silver nanowires(AgNWs)loaded cotton fiber as shell was fabricated by spinning *** results showed that when the loading of AgNWs was 10 wt%,the strain range of the PU/cotton@AgNWs core-spun yarn was 0-60%,the gauge factor of 12.6 was linear,and the strain sensing and mechanical properties were stable after repeated *** strain sensing elastic core-spun yarns constructed by spinning technology could be used as one of the important materials for intelligent wearable devices.

关键词： Silver Nanowires (AgNWs) Elastic Core-spun Yarns Flexible Strain Sensor Polyurethane(PU) Filament Cotton Fiber

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Synergistic triple-site engineering in ABX 3 -type hybrid halides for high-performance nonlinear optical crystals

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Chinese Chemical Letters 2025年

作者： Yuwei Kang Can Yang Jun Zhang Qi Wu State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan 430200 China State Key Laboratory of Functional Crystals and Devices Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350108 China Key Laboratory of Functional Molecule Design and Interface Process Anhui Jianzhu University Hefei 230601 China

Achieving non-centrosymmetric (NCS) configurations in ABX 3 -type hybrid halides remains a critical challenge for nonlinear optical (NLO) aterials due to the conflicting requirements of high second-harmonic generation (SHG) response, wide bandgap, and phase-matching capabilities. Herein, we propose a triple-site modulation strategy by synergistically tailoring the A -site cations (2-methylimidazole cation/1-ethyl-3-methylimidazole cation), B -site metals (Sn 2+ /Pb 2+ ), and X -site halogens (Cl/Br), which effectively disrupts lattice symmetry and enables NCS crystallization. Our results demonstrate a strong SHG response, an expanded optical bandgap and increased birefringence. The optimized compound C 6 H 11 N 2 PbCl 3 exhibits a record SHG efficiency of 3.8 × KDP, a wide bandgap (3.87 eV), and enhanced birefringence (0.14), surpassing majority hybrid NLO materials. The innovative anionic framework introduced here broadens the scope of hybrid NLO crystals, facilitating the integration of various aromatic heterocyclic cations. This research provides a robust strategy for the development of advanced NLO materials.

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