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Constructing inter-diffusive PtCuNi/WO_(3)interface to enhance the catalytic activity and stability in oxygen reduction

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Tungsten 2024年第2期6卷 293-303页

作者： Hao-Zhe Xu Dong Li Ying Chen Pin Fang Xiao-Xing Ke Olga Demidenko Yu-Jing Li Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications Experimental Center of Advanced MaterialsSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Faculty of Materials and Manufacturing Beijing University of TechnologyBeijing 100124China Scientifi c-Practical Materials Research Centre National Academy of Sciences of Belarus220072 MinskBelarus

Platinum-group-metal-based alloy nanocrystals have been considered as the most effi cient catalysts for oxygen reduction reaction(ORR).However,the poor stability issues limit their further deployment in *** oxide(WO_(3))has received attention due to its intrinsic electrochemical stability and proton absorption/desorption *** this work,we prepared PtCuNi/WO_(3)/C hybrid catalyst with inter-diff usive alloy/WO_(3)interface on *** catalyst exhibits enhanced activity and stability associated with the WO_(3)*** characterization results suggest that the increased activity originates from the complementary proton supply of non-stoichiometric H_(x)WO_(3).Moreover,WO_(3)prevents the particle from dissolution and detachment under vigorous electrochemical *** enhanced stability originates from the electronic interaction established between Pt and *** work provides new strategies to design high-performance ORR catalysts by taking the merits of WO_(3)。

关键词： Tungsten oxide PtCuNi Interface Electronic interaction

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Crystal-Collapse-Induced Synthesis of High-Capacitance LaCoO_(x)/Co-Doped Carbon-Based Supercapacitors

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Transactions of Tianjin University 2025年第1期31卷 29-41页

作者： Zhihao Deng Yuanbo Wang Wu Shao Jingwen He Jie Sheng Ronghao Cen Yufei Fu Wenjun Wu Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Shanghai Key Laboratory of Functional Materials ChemistryFeringa Nobel Prize Scientist Joint Research CenterInstitute of Fine ChemicalsFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China

The development of high-performance,reproducible carbon(C)-based supercapacitors remains a significant challenge because of limited specific ***,we present a novel strategy for fabricating LaCoO_(x) and cobalt(Co)-doped nanoporous C(LaCoO_(x)/Co@ZNC)through the carbonization of Co/Zn-zeolitic imidazolate framework(ZIF)crystals derived from a PVP-Co/Zn/La *** unique ZIF structure effectively disrupted the graphitic C framework,preserved the Co active sites,and enhanced the electrical *** synergistic interaction between pyridinic nitrogen and Co ions further promoted redox *** addition,the formation of a hierarchical pore structure through zinc sublimation facili-tated electrolyte *** resulting LaCoO_(x)/Co@ZNC exhibited exceptional electrochemical performance,delivering a remarkable specific capacitance of 2,789 F/g at 1 A/g and outstanding cycling stability with 92%capacitance retention after 3,750 *** findings provide the basis for a promising approach to advancing C-based energy storage technologies.

关键词： Supercapacitor High capacitance Carbon electrode Doping Crystal-collapse

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Application of Ag-based materials in high-performance lithium metal anode:A review

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材料科学技术（英文版） 2023年第2期133卷 165-182页

作者： Zhongxiu Liu Sihu Ha Yong Liu Fei Wang Feng Tao Binrui Xu Renhong Yu Guangxin Wang Fengzhang Ren Hongxia Li Provincial and Ministerial Co-Construction of Collaborative Innovation Center for Non-Ferrous Metal New Materials and Advanced Processing Technology Henan Key Laboratory of Non-Ferrous Materials Science & Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China Provincial and Ministerial Co-Construction of Collaborative Innovation Center for Non-Ferrous Metal New Materials and Advanced Processing Technology Henan Key Laboratory of Non-Ferrous Materials Science & Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials Henan Key Laboratory of High-Temperature Structural and Functional MaterialsHenan University of Science and TechnologyLuoyang 471003China School of Electrical Engineering Henan University of Science and TechnologyLuoyang 471023China State Key Laboratory of Advanced Refractories Sinosteel Luoyang Institute of Refractories Research Co.Ltd.Luoyang 471039China

Li metal is a promising candidate for battery anodes due to its high theoretical specific capacity(3860 mAh g-1)and low electrochemical potential(-3.04 V).Nevertheless,the challenges for Li metal include uncontrolled dendrites growth,unstable solid electrolyte interface,and infinite volume expansion during Li plating and stripping,which limit the further development of lithium metal anodes(LMAs).Intro-ducing Ag-based materials in LMAs is regarded as one of the most effective solutions to solve the above-mentioned problems,which have received considerable attention because of their superior characteristics,such as high electrical conductivity,outstanding lithiophilicity,and excellent mechanical ***,we review the recent progress on the application of Ag-based materials in ***,the theo-retical mechanism of Ag-based materials and their advantages in LMAs are *** addition,the relationship between their fabrication strategies,micro/nanostructures,and electrochemical performances is systematically ***,the challenges and opportunities for the future research and appli-cation of Ag-based materials in lithium metal batteries are proposed based on the available academic knowledge.

关键词： Ag-based materials Nucleation sites Current collectors Lithium metal anodes Electrochemical performance

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骨齿对龟甲骨质层中骨缝结构强度和韧性的影响

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Acta Mechanica Sinica 2023年第10期39卷 124-136页

作者：李沛然于哲源彭志龙张博姚寅陈少华 Institute of Advanced Structure Technology Beijing Institute of Technology Beijing 100081 China Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures Beijing Institute of Technology Beijing 100081 China

龟壳背甲的骨质板由多根独立的肋骨组成,内部的骨缝结构将独立的肋骨组成整体骨质板.基于单轴拉伸、弯曲实验和有限元分析,本文研究了骨缝结构中的骨齿对龟甲骨质板整体强度和韧性的影响.微观形貌观测实验实验表明,龟甲骨质板骨缝结构... 详细信息

龟壳背甲的骨质板由多根独立的肋骨组成,内部的骨缝结构将独立的肋骨组成整体骨质板.基于单轴拉伸、弯曲实验和有限元分析,本文研究了骨缝结构中的骨齿对龟甲骨质板整体强度和韧性的影响.微观形貌观测实验实验表明,龟甲骨质板骨缝结构中的骨齿带有三棱锥和四棱锥的凹槽构型,与已有研究中假设的完美圆锥型结构有着显著差异.通过3D打印技术制备了带有三棱锥和四棱锥凹槽构型的骨缝结构仿生试件并进行了力学测试.结果表明,骨齿的齿峰-齿谷比值是影响骨缝结构整体强韧性的关键因素,而非假设的骨齿侧表面积和投影面积.对于给定形状的骨齿结构而言,齿峰-齿谷比值越大则骨质板的强度和韧性则越大.对龟壳背甲带骨缝的骨质板和相应的仿生试件进行了三点弯曲实验测试,结果同样表明骨齿的齿峰-齿谷比值是整体强韧性能的决定性参数.本文的结果对于缝结构材料的强韧化仿生设计具有指导意义.

关键词：骨缝三点弯曲实验投影面积结构仿生力学测试三棱锥圆锥型仿生设计

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Moisture is not always bad:H_(2)O accelerates the conversion of DMAPbI_(3) intermediate to CsPbI_(3)for boosting the efficiency of carbon-based perovskite solar cells to over 16%

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Fundamental Research 2024年第5期4卷 1110-1117页

作者： Hailiang Wang Huicong Liu Zijing Dong Xueyuan Wei Weiping Li Liqun Zhu Cheng Zhu Yang Bai Haining Chen School of Materials Science and Engineering Beihang UniversityBeijing 100191China Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications MIIT Key Laboratory for Low-dimensional Quantum Structure and DevicesExperimental Center of Advanced MaterialsSchool of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China

Inorganic CsPbI_(3)perovskite has exhibited great application potential in perovskite solar cells(PSCs)due to its suitable optical bandgap and high chemical ***,the perovskite phases of CsPbI_(3)are not stable at room temperature,where they transition to non-perovskite *** or water has been thought to be the primary factor inducing this phase transition,which should be avoided throughout the procedure of film and device ***,the present study indicates that preparing a precursor solution in humid air is beneficial to the growth of high-quality CsPbI_(3)perovskite to enhance device *** is demonstrated that the incorporation of H2O in the precursor solution from humid air or by intentional addition significantly changes the composition of coordination compounds and increases the amount of low iodine coordination *** a result,the crystallization of dimethylammonium lead iodide(DMAPbI_(3))intermediate is suppressed well,which accelerates its subsequent conversion to CsPbI_(3)***,an oriented CsPbI_(3)perovskite film with improved crystallinity and lower defect density is *** importantly,carbon-based PSCs(C-PSCs)based on the CsPbI_(3)perovskite film achieve an efficiency of 16.05%,a new record for inorganic C-PSCs.

关键词： Inorganic perovskite CsPbI_(3) Carbon electrode Solar cells Water

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Mechanism of yttrium in deep desulfurization of NiCoCrAIY alloy during vacuum induction melting process

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Rare Metals 2022年第1期41卷 218-225页

作者： Jin-Peng Li Hua-Rui Zhang Ming Gao Qing-Ling Li Jie Zhang Bo Yang Hu Zhang School of Materials Science and Engineering Beihang UniversityBeijing 100191China Beijing Key Laboratory for Advanced Functional Material and Thin Film Technology Beihang UniversityBeijing 100191China

In this study,yttrium as desulfurizer on the purification of Ni-20Co-20Cr-10Al-Y alloy during vac-uum induction melting(VIM)process using Y_(2)O_(3)cru-cibles was investigated *** is found that Y plays an important role on the desulfurizing of the NiCo-CrAIY *** any addition of Y,merely the employment of Y_(2)O_(3)crucibles could effectively reduce S content of the alloy melts from 28×10^(-6)to 6×10^(-6)-7×10^(-6).With addition of 0.8 wt%Y in the alloy,the concentration of S could further reduce 2×10^(7)3×10^(-6).The primary interactive mechanism between Y and molten alloy was concluded to be the synthesis reac-tion of NisY phase,Y2S3 phases and YAIO_(3)*** the desulfurize slags,Y2S3 phases and Y_(2)O_(3)phase are *** secondary contamination is present in the alloy melts after addition of Y.

关键词： Yttrium Desulfurization Vacuum induction melting Y_(2)O_(3)crucibles NiCoCrAIY alloy

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Bright dual-color electrochemiluminescence of a structurally determined Pt1Ag18 nanocluster

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Aggregate 2024年第1期5卷 345-352页

作者： Bing Yin Lirong Jiang Xiaojian Wang Ying Liu Kaiyang Kuang Mengmeng Jing Chunmin Fang Chuanjun Zhou Shuang Chen Manzhou Zhu Institutes of Physical Science and Information Technology and Centre for Atomic Engineering of Advanced Materials Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationDepartment of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized MaterialsAnhui UniversityHefeiChina

Metal nanoclusters possess excellent electrochemical,optical,and catalytic properties,but correlating these properties remains challenging,which is the foundation to generate electrochemiluminescence(ECL).Herein,we report for the first time that a structurally determined Pt1Ag18 nanocluster generates intense ECL and simultaneously enhances the ECL of carbon dots(CDs)via an electrocatalytic ***^(1)Ag_(18)nanocluster show aggregation-induced emission enhancement and aggregation-induced ECL enhancement under light and electrochemical stimulation,*** the presence of tripropylamine(TPrA)as a coreactant,solid Pt1Ag18 shows unprecedented ECL efficiency,which is more than nine times higher than that of 1 mM Ru(bpy)32+with the same TPrA ***-resolved ECL spectra reveal two ECL emission bands in the presence of *** ECL emission centered at 650 nm is assigned to the solid Pt_(1)Ag_(18)nanocluster,consistent with the peak wavelength in self-annihilation ECL and photoluminescence of the solid *** ECL emission centered at 820 nm is assigned to the CDs on the glassy carbon *** electrocatalytic effect of the nanoclusters enhanced the ECL of the CDs by a factor of more than 180 in comparison to that without *** on the combined optical and electrochemical results,the ECL generation pathways and mechanisms of Pt1Ag18 and CDs are *** findings are extremely promising for designing multifunctional nanocluster luminophores with strong emissions and developing ratiometric sensing devices.

关键词： AIECLE AIEE electrochemiluminescence nanocluster photoluminescence structure

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CO electroreduction:What can we learn from its parent reaction,CO_(2) electroreduction?

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escience 2023年第6期3卷 1-8页

作者： Xue Ding Jie Zhang Yanguang Li Institute of Functional Nano and Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123China Jiangsu Key Laboratory for Advanced Negative Carbon Technologies Soochow UniversitySuzhou 215123China Macao Institute of Materials Science and Engineering(MIMSE) MUST-SUDA Joint Research Center for Advanced Functional MaterialsMacao University of Science and TechnologyMacao999078China

The CO electroreduction reaction(CORR)represents an important piece of the decarbonization puzzle and is heavily inspired by research on the CO_(2) electroreduction reaction(CO_(2)RR).Compared to its parent reaction,CORR circumvents the(bi)carbonate issue that plagues CO_(2)RR,potentially enabling greater stability and selectivity toward C2þproducts,particularly *** its unique potential,CORR still suffers from unsatisfactory *** this perspective article,we aim to provide a concise and informative overview of CORR and its close connection with CO_(2)*** start by briefly presenting the two reactions’similarities and differences,then discussing several catalyst design *** is followed by highlights of the latest results on device integration and ***,we offer our thoughts about possible future research opportunities that could render this technology a practical reality.

关键词： CO electroreduction CO_(2)electroreduction Catalysts Devices

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Interfacial engineering of the layered oxide cathode materials for sodium-ion battery

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Nano Research 2024年第3期17卷 1441-1464页

作者： Quanqing Zhao Ruru Wang Ming Gao Faheem KButt Jianfeng Jia Haishun Wu Youqi Zhu Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education School of Chemistry and Materials ScienceShanxi Normal UniversityTaiyuan 030032China Metals and Chemistry Research Institute China Academy of Railway Sciences Corporation LimitedBeijing 100081China Department of Physics Division of Science and TechnologyUniversity of EducationLahore 54770Pakistan Research Center of Materials Science Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green ApplicationsBeijing Institute of TechnologyBeijing 100081China

The layered metal oxides are reviewed as the hopeful cathode materials for high-performance sodium-ion batteries(SIBs)due to their large theoretical capacity,favorable two-dimensional(2D)ion diffusion channel,and simple ***,their cycling stability,rate capability,and thermal stability are still significantly concerned and highlighted before further practical *** chemical,mechanical and electrochemical stability of the cathode–electrolyte interfaces upon cycling is of great ***,the unique structural and electrochemical properties of the layered oxide cathode materials for SIB are *** mechanism of bulk/surface degradation induced by oxygen evolution,phase transition,microcrack,and electrolyte decomposition is thoroughly ***,the interfacial engineering to construct stable interface through various effective methods is fully *** future outlook and challenges for interfacial engineering in this filed are also *** review should shed light on the rational design and construct of robust interface for applications of superior layered oxide cathodes in SIB and may suggest future research directions.

关键词： interfacial engineering sodium-ion battery layered oxide electrolyte interface

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Toughening Effects through Optimizing Cell Structure and Deformation Behaviors of Al–Mg Foams

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Acta Metallurgica Sinica(English Letters) 2022年第12期35卷 2014-2026页

作者： Hao Yu Xudong Yang Weiting Li Xudong Rong Siyuan Guo Lishi Ma Lizhuang Yang Junwei Sha Naiqin Zhao Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin 300350China Sino-European Institute of Aviation Engineering Civil Aviation University of ChinaTianjin 300300China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China Key Laboratory of Advanced Ceramics and Machining Technology Ministry of EducationTianjin 300350China

As widely used protective materials,the application of Al foams is still limited by their low intrinsic mechanical properties caused by the brittleness of *** introduction of Mg is recently demonstrated effective to improve the mechanical performance of Al foams;however,the mechanism of Mg modification is still not *** this work,Al-Mg foams are developed through a powder metallurgy process with excellent compression performance and high energy absorption *** effects of Mg modification on the cell structure,toughness,and deformation behavior are investigated *** a result,the small cell size of~1.8 mm and the high sphericity of 0.92 are achieved with 5% of Mg addition,delivering high compression stress of 8.5±0.43 MPa and energy absorption capacity of 6.9±0.36 MJ/m^(3),*** synergistic mechanism for the improved mechanical performance is also demonstrated to be the combination of stress transfer and plastic deformation behavior of *** results provide a new strategy to develop high-performance foam materials by improving toughness and further promote the practical application.

关键词： Powder metallurgy Aluminum foam Al-Mg alloy Plastic deformation Cell structure

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