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Aligne d nanofib ers incorporate d composite solid electrolyte for high-sensitivity oxygen sensing at medium temperatures

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Journal of materials Science & technology 2024年第14期181卷 189-197页

作者： Mengfei Zhang Lei Yao Yan Xing Jing Cheng Tianrang Yang Jianguo Liu Wei Pan Institute of Energy Power Innovation North China Electric Power UniversityBeijing 102206China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Shenzhen Key Laboratory of Special Functional Materials Shenzhen Engineering Laboratory for Advanced Technology of CeramicsGuangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China New Energy Technology Engineering Lab of Jiangsu Province School of ScienceNanjing University of Posts&Telecommunications(NUPT)Nanjing 210003China

otentiometric oxygen sensors have been widely used in internal combustion engines,industrial boilers,and metallurgical heat treatment ***,traditional oxygen sensors based on yttria-stabilized zirconia(YSZ)electrolyte can only be operated at elevated temperatures(>750℃)due to their rela-tively low ionic *** this study,we present a highly efficient micro-oxygen sensor that can be operated at a temperature as low as 300℃.This micro-oxygen sensor incorporates a composite solid electrolyte,i.e.,well-aligned gadolinium-doped cerium oxide(CGO)nanofibers embedded within a YSZ matrix(YSZ/CGO_(f)).The arrays of CGO nanofibers in the YSZ matrix are parallel to the conduction direc-tion,providing rapid conducting channels for oxygen *** from this design,the composite electrolyte leads to a conductivity of four times higher than that of traditional YSZ solid electrolytes at low *** enhancement in conductivity is attributed to the presence of a defective interfacial region between CGO_(f)and YSZ,which promotes the mobility of oxygen *** strategy of constructing fast ionic conduction in the composite electrolyte by using well-aligned nanofibers may be considered for the design and optimization of other micro/nano-devices including sensors,batteries,and fuel cells.

关键词： Oxygen sensor Nanofibers Composite electrolyte Ionic conduction

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Na_(3)Zr_(2)Si_(2)PO_(12) solid-state electrolyte with glass-like morphology for enhanced dendrite suppression

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Rare Metals 2022年第12期41卷 4086-4093页

作者： Hang Su Shi-Wei Zhang Yi-Meng Liu Chao Yang Li-Xiao Zhang Sen Xin Ya You State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences(CAS)Beijing 100190China University of Chinese Academy of Sciences International School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

Rechargeable batteries based on solid-state electrolytes are of great interest and importance for the next-generation energy storage due to their high energy output and improved *** building the solid-state batteries,Na_(3)Zr_(2)Si_(2)PO_(12)(NZSP)represents a promising candidate as it features high chemical stability against air exposure and a high Na^(+)*** pellets were usually calcined at a high temperature,and the high volatility of Na and P elements easily led to the formation of impurity *** this work,the effects of calcination temperature and stoichiometry on the phase purity and ionic conductivity of the NZSP electrolyte were *** an elevated sintering temperature,the NZSP electrolyte showed a high ionic conductivity owing to decreased porosity,and the highest ionic conductivity at 30℃was observed to be 2.75×10^(-5)S·cm^(-1)with an activation energy of 0.41 *** the stoichiometry,the introduction of 5 mol%excessive P results in formation of more Na_(3)PO_(4) and glass-like phase at the grain boundary,which caused the blurred grain boundary and reduced grain barrier,and effectively suppressed Na dendrite growth,then accounted for improved cycling performance of a Na‖Na symmetric *** work provided insights on reasonable design and preparation of NZSP electrolyte towards practical realization of solid-state Na-metal batteries.

关键词： Na_(3)Zr_(2)Si_(2)PO_(12)(NZSP) Natrium superionic conductor(NASICON)solid-state electrolytes Grain boundary Ionic conductivity Glass-like morphology

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Minimizing tin(Ⅱ) oxidation using ethylhydrazine oxalate for high-performance all-perovskite tandem solar cells

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Journal of Semiconductors 2025年第5期46卷 88-94页

作者： Jianhua Zhang Xufeng Liao Weisheng Li Yutian Tian Qinyang Huang Yitong Ji Guotang Hu Qingguo Du Wenchao Huang Donghoe Kim Yi-Bing Cheng Jinhui Tong State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Art and Design Wuhan University of TechnologyWuhan 430070China School of Information Engineering Wuhan University of TechnologyWuhan 430070China Department of Materials Science and Engineering Korea UniversitySeoul 02841Korea Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528200China

All-perovskite tandem solar cells(ATSCs) have the potential to surpass the Shockley-Queisser efficiency limit of conventional single-junction devices. However, the performance and stability of mixed tin–lead(Sn–Pb) perovskite solar cells(PSCs), which are crucial components of ATSCs, are much lower than those of lead-based perovskites. The primary challenges include the high crystallization rate of perovskite materials and the susceptibility of Sn^(2+) oxidation, which leads to rough morphology and unfavorable p-type self-doping. To address these issues, we introduced ethylhydrazine oxalate(EDO) at the perovskite interface, which effectively inhibits the oxidation of Sn^(2+) and simultaneously enhances the crystallinity of the perovskite. Consequently, the EDO-modified mixed tin-lead PSCs reached a power conversion efficiency(PCE) of 21.96% with high reproducibility. We further achieved a 27.58% efficient ATSCs by using EDO as interfacial passivator in the Sn-Pb PSCs.

关键词： mixed tin–lead perovskite solar cells ethylhydrazine oxalate Sn^(2+)oxidation all-perovskite tandem solar cells

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Nucleation growth quenching for superior cluster catalysts

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Nano Research 2022年第9期15卷 7933-7939页

作者： Ruyue Wang Feng Cheng Yonggang Wang Dongyu Fan Bohan Deng Yuanzheng Long Haolin Tang Kai Huang Zhaowei Qu Ming Lei Binghui Ge Hui Wu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Information Photonics and Optical Communications School of ScienceBeijing University of Posts and TelecommunicationsBeijing 100876China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Beijing Key Laboratory of Space-ground Interconnection and Convergence Beijing University of Posts and Telecommunications(BUPT)Beijing 100876China Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China

Cluster catalysts are rapidly growing into an important sub-field in heterogeneous catalysis,owing to their distinct geometric structure,neighboring metal sites,and unique electronic *** the thermodynamics and kinetics of the formation of nanoparticles have been largely investigated,the precise synthesis of clusters in wet chemical methods still faces great *** the study,a quenching strategy of asymmetric temperature in solution for the rapid generation of vacancy-defect rich clusters is *** quenching process can be used to synthesize multitudinous metal compound clusters,including metal oxides,fluorides,oxygen-sulfur compounds,and *** oxygen evolution reaction(OER),IrO_(2)clusters with abundant oxygen vacancies were obtained and uniformly dispersed in the *** to commercial IrO_(2),the prepared IrO_(2)cluster can be directly loaded on carbon paper and used as binder-free electrodes,which exhibit higher OER activity and long-term operational stability in alkaline *** quenching strategy provides a simple and efficient method for the synthesis of clusters,which has tremendous potential for industrial-scale preparation and application,especially can be further applied to flow electrochemical generators.

关键词： rapid-chilling cluster structure transition metal compounds binder-free electrode oxygen evolution reaction

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Slow Photon-Enhanced Heterojunction Accelerates Photocatalytic Hydrogen Evolution Reaction to Unprecedented Rates

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CCS Chemistry 2023年第2期5卷 372-384页

作者： Jing Liu Yin-Hao Guo Zhi-Yi Hu Heng Zhao Ze-Chuan Yu Lihua Chen Yu Li Gustaaf Van Tendeloo Bao-Lian Su State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology430070 Wuhan Nanostructure Research Centre(NRC) Wuhan University of Technology430070 Wuhan School of Civil Engineering and Architecture Wuhan University of Technology430070 Wuhan EMAT University of AntwerpB-2020 Antwerp Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 Namur

In photocatalysis,both the photogenerated charge separation and transport and the induced light utilization greatly influence *** this work,highly ordered CdS@ZnO core-shell inverse opal(CdS@ZnO-csIO)nanocomposites have been successfully designed as a model to couple the heterojunction system with the slow photon effect for photocatalytic H2 *** calculations and experimentation provide direct evidence for the slow photon effect in the CdS@ZnO-csIO *** type II heterojunction is responsible for promoting the migration and separation of photogenerated charges,and the slow photon effect is in charge of enhancing light harvesting in the CdS@ZnO-csIO *** synergy of two functions gives rise to a significantly enhanced photocatalytic H2 production rate under simulated solar light for the CdS@ZnO-csIO *** highest H2 production rate reaches 48.7 mmol g^(−1)h^(−1)under simulated solar light with the benchmark performance for all reported CdS@ZnO *** work provides proof-of-principle that coupling the heterojunction system with the slow photon effect can greatly enhance the photocatalytic activity of composite photocatalysts.

关键词： type II heterojunction slow photon effect CdS@ZnO nanocomposites 3D core-shell inverse opal nanocomposites photocatalytic H2 production

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Hollow CdS-based photocatalysts

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Journal of Materiomics 2021年第3期7卷 419-439页

作者： Xiangyu Liu Mahmoud Sayed Chuanbiao Bie Bei Cheng Biwei Hu Jiaguo Yu Liuyang Zhang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology122 Luoshi RoadWuhan430070China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450001China Corresponding author.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology122 Luoshi RoadWuhan430070China.

In recent years,photocatalytic technology,driven by solar energy,has been extensively investigated to ease energy crisis and environmental ***,efficiency and stability of photocatalysts are still *** address these issues,design of advanced photocatalysts is *** sulphide(CdS)nanomaterials are one of the promising *** them,hollow-structured CdS,featured with enhanced light absorption ability,large surface area,abundant active sites for redox reactions,and reduced diffusion distance of photogenerated carriers,reveals a broad application ***,main synthetic strategies and formation mechanism of hollow CdS photocatalysts are ***,we comprehensively discuss the current development of hollow-structured CdS nanomaterials in photocatalytic applications,including H2 production,CO2 reduction and pollutant ***,brief conclusions and perspectives on the challenges and future directions for hollow CdS photocatalysts are proposed.

关键词： Hollow sphere CdS photocatalysts Pollutant degradation Hydrogen production CO2 reduction

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Sintering kinetics involving grain growth and densification of Mg-PSZ nanopowders

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Journal of Iron and Steel Research International 2022年第7期29卷 1138-1144页

作者： Yi-ming She Jie-fu Lang Di An Chao-wei Si Xu-dong Luo Zhi-peng Xie Jie-gang You School of Materials and Metallurgy University of Science and Technology LiaoningAnshan 114051LiaoningChina Institute of Advanced Structures Beijing Institute of TechnologyBeijing 100081China State Key Lab of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Sintering kinetics have been found to be effective in judging the evolution of *** using magnesium oxide-partially stabilized zirconia(Mg-PSZ)powder prepared by co-precipitation as raw materials,the evolution of densification and grain growth for Mg-PSZ ceramics were *** results indicated that the densification of samples was mainly controlled by grain boundary diffusion in intermediate sintering *** the sintering process,the grain growth mechanisms included normal grain growth,abnormal grain growth and solid solution drag-controlled grain ***,the apparent activation energy for grain growth of Mg-PSZ ceramics is lower than that of ZrO_(2)–Y_(2)O_(3)ceramics in the solid solution drag-controlled grain grow process,which will cause grain to grow *** sintering kinetics and microstructure of Mg-PSZ ceramics were studied,and the kinetic equation of grain growth at different temperatures was *** results show that the strength difference between Mg-PSZ and yttrium oxide-stabilized zirconia is closely related to the easy grain growth of Mg-PSZ ceramics.

关键词： Magnesium oxide-partially stabilized zirconia Sintering kinetics Grain growth mechanism Densification mechanism Sizing nozzle

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Recent Advances on Graphene Quantum Dots for Electrochemical Energy Storage Devices

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Energy & Environmental materials 2022年第1期5卷 201-214页

作者： Noura Zahir Pierre Magri Wen Luo Jean Jacques Gaumet Philippe Pierrat CNRS L2CM UMR 7053 Universit e de Lorraine LCP-A2MC EA4632 Institut Jean Barriol Universit e de Lorraine State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technologywuhan 430070china

Graphene quantum dots(GQDs)which are nanofragments of graphene with an average size between 2 and 50 nm have attracted much attention due to their outstanding properties such as high conductivity,high surface area,and good solubility in various *** combine the quantum confinement and edges effects and the properties of ***,GQDs offers a broad range of applications in various fields(medicine,energy conversion,and energy storage devices).This review will present the recent research based on the introduction of GQDs in batteries,supercapacitors,and microsupercapacitors as electrodes materials or mixed with an active material as an auxiliary ***,discussed on selected examples,summarize the electrochemical performances and finally,challenges and perspectives are recalled for the subsequent optimization strategy of electrode *** review is expected to appeal a broad interest on functional GQDs materials and promote the further development of high-performance energy storage device.

关键词： energy storage graphene quantum dots lithium ion batteries sodium ion batteries supercapacitor

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Solar-driven H_(2)O_(2)production by S-scheme heterojunction photocatalyst

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Chinese Journal of Catalysis 2025年第5期72卷 24-47页

作者： Han Li Wang Wang Kaiqiang Xu Bei Cheng Jingsan Xu Shaowen Cao School of Automotive Materials Hubei University of Automotive TechnologyShiyan 442020HubeiChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina Hubei Technology Innovation Center for Advanced Composites Wuhan University of TechnologyWuhan 430070HubeiChina School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China School of Chemistry and Physics&Centre for Materials Science Queensland University of TechnologyBrisbaneQueensland 4001Australia

Hydrogen peroxide(H_(2)O_(2)),as an essential and green chemical,is extensively used in energy and environmental ***,the production of H_(2)O_(2)primarily relies on the anthraquinone method,which is an energy-intensive method involving multi-step reactions,producing harmful by-product ***-driven H_(2)O_(2)production,an alternative route for H_(2)O_(2)generation,is a green and sustainable technology since it only utilizes water and oxygen as ***,the rapid recombination of charge carriers as well as insufficient redox capability limit the photocatalytic H_(2)O_(2)production *** step-scheme(S-scheme)heterojunction photocatalysts has been regarded as an effective strategy to address these drawbacks because it not only achieves spatially separated charge carriers,but also preserves redox capability of the photocatalytic *** paper covers the recent advances of S-scheme heterojunction photocatalysts for H_(2)O_(2)production in terms of basic principles,characterization techniques,and preparation ***,the mechanism and advantages of S-scheme heterojunction for photocatalytic H_(2)O_(2)generation are systematically *** recent S-scheme heterojunction designs,including inorganic-organic heterojunction,inorganic-inorganic heterojunction,and organic-organic heterojunction,are ***,the challenges and research directions of S-scheme photocatalysts for H_(2)O_(2)generation are presented.

关键词： Step-scheme heterojunction H_(2)O_(2)photosynthesis Charge migration mechanism Solar conversion

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Pressure-driven metallization with significant changes of structural and photoelectric properties in two-dimensional EuSbTe_(3)

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Rare Metals 2024年第11期43卷 5943-5952页

作者： Zhi-Kai Zhu Zhong-Yang Li Zhen Qin Yi-Ming Wang Dong Wang Xiao-Hui Zeng Fu-Yang Liu Hong-Liang Dong Qing-Yang Hu Ling-Ping Kong Hao-Zhe Liu Wen-Ge Yang Yan-Feng Guo Shuai Yan Xuan Fang Wei He Gang Liu State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materialsand School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China Center for High Pressure Science and Technology Advanced Research(HPSTAR) Shanghai 201203China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Poly Technologies INCBeijing 100010China ShanghaiTech Laboratory for Topological Physics ShanghaiTech UniversityShanghai 201210China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201204China Sch Sci State Key Lab High Power Semicond LasersChangchun University Science and TechnologyChangchun 130022China Shanghai Key Laboratory of Material Frontiers Research in Extreme Environments(MFree) Shanghai Advanced Research in Physical Sciences(SHARPS)Shanghai 201203China

Two-dimensional materials are widely considered to be highly promising for the development of *** improve the performance of these devices,researchers often employ techniques such as defect ***,pressure is employed as a clean and novel means to manipulate the structural and physical properties of EuSbTe_(3),an emerging two-dimensional *** experimental results demonstrate that the structural phase transformation of EuSbTe_(3)occurs under pressure,with an increase in infrared reflectivity,a band gap closure,and a metallization at *** with X-ray diffraction(XRD)and Raman characterizations,it is evident that the pressure-driven transition from semiconductor Pmmn phase to metallic Cmcm phase causes the disappearance of the charge density ***,at a mild pressure,approximately 2 GPa,the maximum photocurrent of EuSbTe_(3)is three times higher than that at ambient condition,suggesting an untapped potential for various practical applications.

关键词： Pressure Phase transition Metallization Photoresponse Two-dimensional(2D)

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