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A defective iron-based perovskite cathode for high-performance IT-SOFCs:Tailoring the oxygen vacancies using Nb/Ta co-doping

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Journal of Energy Chemistry 2024年第1期88卷 306-316,I0008页

作者： Bayu Admasu Beshiwork Xinyu Wan Min Xu Haoran Guo Birkneh Sirak Teketel Yu Chen Jun Song Chen tingshuai Li Enrico Traversa School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina The Future Laboratory Tsinghua UniversityBeijing 100084China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China Schoolof Environment and Energy South China University of Technlogy Guangzhou 50006GuangongChina Institute for Advanced Study Chengdu UniversityChengdu 610106SichuanChina

The sluggish kinetics of the electrochemical oxygen reduction reaction(ORR)in intermediatetemperature solid oxide fuel cells(IT-SOFCs)greatly limits the overall cell *** this study,an efficient and durable cathode material for IT-SOFCs is designed based on density functional theory(DFT)calculations by co-doping with Nb and Ta the B-site of the SrFeO_(3-δ)perovskite *** DFT calculations suggest that Nb/Ta co-doping can regulate the energy band of the parent SrFeO_(3-δ)and help electron *** symmetrical cells,such cathode with a SrFe_(0.8)Nb_(0.1.Ta_(0.1.O_(3-δ)(SFNT)detailed formula achieves a low cathode polarization resistance of 0.1.7Ωcm^(2) at 650℃.Electron spin resonance(ESR)and X-ray photoelectron spectroscopy(XPS)analysis confirm that the co-doping of Nb/Ta in SrFeO_(3-δ)B-site increases the balanced concentration of oxygen vacancies,enhancing the electrochemical performance when compared to 20 mol%Nb single-doped perovskite *** cathode button cell with NiSDC|SDC|SFNT configuration achieves an outstanding peak power density of 1.3 W cm^(-2)at 650℃.Moreover,the button cell shows durability for 1.0 h under 0.65 V at 600℃ using wet H_(2) as fuel.

关键词： Solid oxide fuel cell Cathode Oxygen reduction reaction Power density DFT calculation

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Electrocatalytic synthesis of C-N coupling compounds from CO_(2) and nitrogenous species

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SusMat 2024年第2期4卷 51-74页

作者： Zheng Zhang Danyang Li Yunchuan Tu Jiao Deng Huiting Bi Yongchao Yao Yan Wang tingshuai Li Yongsong Luo Shengjun Sun Dongdong Zheng Sónia A.C.Carabineiro Zhou Chen Junjiang Zhu Xuping Sun Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing&Finishing College of Chemistry and Chemical EngineeringWuhan Textile UniversityWuhanHubeiChina School of Chemistry and Chemical Engineering Chongqing UniversityChongqingChina i-Lab Vacuum Interconnected NanotechWorkstation(Nano-X)Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhouJiangsuChina Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengduSichuanChina College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinanShandongChina LAQV-REQUIMTE Department of ChemistryNOVA School of Science and TechnologyUniversidade NOVA de Lisboa2829-516 CaparicaPortugal College of Materials Xiamen UniversityXiamenFujianChina

The electrocatalytic synthesis of C-N coupling compounds from CO_(2) and nitrogenous species not only offers an effective avenue to achieve carbon neutral-ity and reduce environmental pollution,but also establishes a route to synthesize valuable chemicals,such as urea,amide,and *** innovative approach expands the application range and product categories beyond simple carbona-ceous species in electrocatalytic CO_(2) reduction,which is becoming a rapidly advancing *** review summarizes the research progress in electrocatalytic urea synthesis,using N_(2),NO_(2)^(-),and NO_(3)^(-)as nitrogenous species,and explores emerging trends in the electrosynthesis of amide and amine from CO_(2) and nitro-gen ***,the future opportunities in this field are highlighted,including electrosynthesis of amino acids and other compounds containing C-N bonds,anodic C-N coupling reactions beyond water oxidation,and the catalytic mechanism of corresponding *** critical review also captures the insights aimed at accelerating the development of electrochemical C-N coupling reactions,confirming the superiority of this electrochemical method over the traditional techniques.

关键词： C-N coupling CO_(2) reduction electrocatalysis nitrogenous species reaction mechanism

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高抗冲击能量钢带式跑车防护装置试验分析

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煤矿机械 2024年第7期45卷 46-48页

作者：谭廷帅抚顺中煤科工检测中心有限公司辽宁抚顺113122 中煤科工集团沈阳研究院有限公司辽宁抚顺113122 煤矿安全技术国家重点实验室辽宁抚顺113122

提出抗冲击能量为5 MJ的钢带式跑车防护装置主要部件的设计计算要求,介绍钢带式跑车防护装置的设计流程,通过性能试验验证温度、温升和安全系数等参数的科学性,为5 MJ及更高抗冲击能量的跑车防护装置的研发设计和使用提供重要参考。

关键词：抗冲击能量钢带式跑车防护装置温升

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超高分子量聚乙烯双抗复合材料在顺槽转载机中的应用

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煤矿机电 2024年第2期45卷 46-50页

作者：谭廷帅抚顺中煤科工检测中心有限公司辽宁抚顺113122 中煤科工集团沈阳研究院有限公司辽宁抚顺113122 煤矿安全技术国家重点实验室辽宁抚顺113122

介绍了超高分子量聚乙烯双抗复合材料在煤矿用顺槽转载机上的应用,并对其关键部件进行力学分析,通过理论分析和试验验证,提出超高分子量聚乙烯双抗复合材料在煤矿用顺槽转载机上的应用的局限性和适用性,为超高分子量聚乙烯复合材料在煤... 详细信息

介绍了超高分子量聚乙烯双抗复合材料在煤矿用顺槽转载机上的应用,并对其关键部件进行力学分析,通过理论分析和试验验证,提出超高分子量聚乙烯双抗复合材料在煤矿用顺槽转载机上的应用的局限性和适用性,为超高分子量聚乙烯复合材料在煤矿机电设备上的应用提供借鉴。

关键词：超高分子量聚乙烯双抗复合材料顺槽转载机局限性试验验证

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结合先验知识的多智能体博弈对抗研究

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高技术通讯 2024年第3期34卷 256-264页

作者：袁婷帅冯宇李永强浙江工业大学信息工程学院杭州310023

无实时奖励的复杂对抗环境是目前深度强化学习(DRL)领域的研究热点,面对此类环境,纯粹使用深度强化学习算法会导致智能体训练无法快速收敛以及对抗效果不佳等问题。基于此,本文提出了一种基于先验知识与深度强化学习相结合的智能博弈流... 详细信息

无实时奖励的复杂对抗环境是目前深度强化学习(DRL)领域的研究热点,面对此类环境,纯粹使用深度强化学习算法会导致智能体训练无法快速收敛以及对抗效果不佳等问题。基于此,本文提出了一种基于先验知识与深度强化学习相结合的智能博弈流程框架,设计了数据处理、增强机制以及动作决策3个模块,通过威胁评估、任务调度和损失比率3种增强机制来提升智能体在复杂对抗环境下的收敛速度和对抗效果。在数据堡垒(DC)平台上进行仿真,实验结果验证了本文所提出的智能博弈流程框架训练的智能体相较于单纯基于深度强化学习的智能体拥有更快的收敛速度以及更高的胜率。

关键词：智能博弈先验知识深度强化学习(DRL) 威胁评估任务调度

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Solid oxide fuel cell interconnect design optimization considering the thermal stresses

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Science Bulletin 2016年第17期61卷 1333-1344页

作者： Min Xu tingshuai Li Ming Yang Martin Andersson School of Energy Science and Engineering University of Electronic Science and Technology of China Department of Energy Sciences Faculty of EngineeringLund University

The mechanical failure of solid oxide fuel cell(SOFC) components may cause cracks with consequences such as gas leakage,structure instability and reduction of cell lifetime.A comprehensive 3D model of the thermal stresses of an anode-supported planar SOFC is presented in this *** main objective of this paper is to get an interconnect optimized design by evaluating the thermal stresses of an anode-supported SOFC for different designs,which would be a new criterion for interconnect *** model incorporates the momentum,mass,heat,ion and electron transport,as well as steady-state *** from methane steam reforming and water-gas shift reaction were considered in our *** results examine the relationship between the interconnect structures and thermal stresses in SOFC at certain mechanical properties.A wider interconnect of the anode side lowers the stress *** simulation results also indicate that thermal stress of coflow design is smaller than that of counterflow,corresponding to the temperature *** study shows that it is possible to design interconnects for an optimum thermal stress performance of the cell.

关键词： Solid oxide fuel cell Thermal stresses Interconnect Optimization Finite element method

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Spatial and temporal evolution of electromagnetic pulses from solid target irradiated with multi-hundred-terawatt laser pulse inside target chamber

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Plasma Science and Technology 2024年第2期26卷 62-69页

作者：何强友邓志刚张智猛夏亚东张博孟令彪贺书凯黄华杨雷刘红杰范伟林晨周维民李廷帅颜学庆 State Key Laboratory of Nuclear Physics and Technology and Key Laboratory of HEDP of the Ministry of EducationCAPTPeking UniversityBeijing 100871People's Republic of China Science and Technology on Plasma Physics Laboratory Research Center of Laser FusionChina Academy of Engineering PhysicsMianyang 621900People's Republic of China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731People's Republic of China Beijing Laser Acceleration Innovation Center Beijing 101400People's Republic of China

Giant electromagnetic pulses(EMPs) induced by high-power laser irradiating solid targets interfere with various experimental diagnoses and even damage equipment,so unveiling the evolution of EMPs inside the laser chamber is crucial for designing effective EMP *** this work,the transmission characteristics of EMPs as a function of distances from the target chamber center(TCC) are studied using B-dot *** mean EMP amplitude generated by picosecond laser-target interaction reaches 561.kV m^(-1.,357 kV m^(-1.,395 kV m^(-1.,and 341.kV m^(-1.at 0.32 m,0.53 m,0.76 m,and 1.m from TCC,which decreases dramatically from 0.32 m to 0.53 ***,it shows a fluctuation from 0.53 m to 1.*** temporal features of EMPs indicate that time-domain EMP signals near the target chamber wall have a wider full width at half maximum compared to that close to TCC,mainly due to the echo oscillation of electromagnetic waves inside the target chamber based on simulation and *** conclusions of this study will provide a new approach to mitigate strong electromagnetic pulses by decreasing the echo oscillation of electromagnetic waves inside the target chamber during laser coupling with targets.

关键词： target electromagnetic pulses spatial distribution

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螺旋卸船机施工中不同参数对物料运动轨迹的影响

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自动化应用 2024年第12期65卷 221-223,226页

作者：卞庭帅刘文鑫沈策国家能源集团泰州发电有限公司江苏泰州225327 华能南通发电有限责任公司江苏南通226000 杭州华新机电工程有限公司浙江杭州310000

针对螺旋卸船机施工中异常物料运动影响机械使用寿命的问题,构建了螺旋卸船机施工转料过程的运动模型,使用MATLAB软件仿真分析不同卸料口倾斜角度与螺旋转速对物料运动轨迹的影响,确定了2种参数的优化设置策略。结果显示,螺旋卸船机在位... 详细信息

针对螺旋卸船机施工中异常物料运动影响机械使用寿命的问题,构建了螺旋卸船机施工转料过程的运动模型,使用MATLAB软件仿真分析不同卸料口倾斜角度与螺旋转速对物料运动轨迹的影响,确定了2种参数的优化设置策略。结果显示,螺旋卸船机在位置2时施工的物料卸料轨迹包络的y轴长度在1. m左右,明显小于螺旋卸船机在位置1.的对应数值。当卸料口倾斜角度参数为90°时,施工阶段物料对转料头带来的冲击磨损最小。当螺旋卸船机螺旋转速较高时,选择曲率半径更大的转料头能减少螺旋卸船机整体结构受到的卸料冲击,并减少施工对机械本身带来的不可逆损害。该结果有利于改进螺旋卸船机的施工日常运转模式。

关键词：螺旋卸船机卸料口运动轨迹螺旋转速

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输煤系统湿式电除尘器阴极线放电特性数值模拟

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当代化工研究 2024年第13期 27-29页

作者：卞庭帅叶帅崔晓波李敏国家能源集团泰州发电有限公司江苏225300 南京工程学院江苏211167 国能(山东)能源环境有限公司山东250000

输煤环境中漂浮着大量微细粉尘,湿式电除尘器是去除1.μm以下颗粒物的重要手段。本文建立了描述电除尘器放电(电势、电荷密度、电场强度等)、流场、粉尘运动的数学模型,数值模拟结果与Penney等人实验结果一致性较好。针对长×宽=650 mm... 详细信息

输煤环境中漂浮着大量微细粉尘,湿式电除尘器是去除1.μm以下颗粒物的重要手段。本文建立了描述电除尘器放电(电势、电荷密度、电场强度等)、流场、粉尘运动的数学模型,数值模拟结果与Penney等人实验结果一致性较好。针对长×宽=650 mm×1.0 mm、3根阴极线直径为5 mm的放电系统进行了流场、放电及粉尘运动的数值模拟分析,通过所建立的数学模型,获得了较好分布的电势、电荷密度和电场强度,能够有效指导电除尘器的设计优化以提高除尘效率。

关键词：煤尘湿式电除尘器放电特性数值模拟

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Highly Efficient Na+ Storage in Uniform Thorn Ball-Like α-MnSe/C Nanospheres

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Acta Metallurgica Sinica(English Letters) 2021年第3期34卷 373-382页

作者： Zhenzhe Li Shuhao Xiao Jiawei Liu Xiaobin Niu Yong Xiang tingshuai Li Jun Song Chen School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 610054China Center for Applied Chemistry University of Electronic Science and Technology of ChinaChengdu 611731China

Because of its high theoretical capacity,MnSe has been identified as a promising candidate as the anode material for sodiumion ***,its fast capacity deterioration due to the huge volume change during the intercalation/deintercalation of sodium ions severely hinders its practical ***,the sodium storage mechanism of MnSe is still under discussion and requires in-depth ***,the unique thorn ball-likeα-MnSe/C nanospheres have been prepared using manganese-containing metal organic framework(Mn-MOF)as a precursor followed by in situ gas-phase selenization at an elevated *** serving as the anode material for sodium-ion battery,the as-preparedα-MnSe/C exhibits enhanced sodium storage capabilities of 41. and 405 mAh g^(-1.at 0.2 and 0.5 A g^(-1.after 1.0 cycles,*** also shows a superior capacity retention of 275 mA h g^(-1.at 1. A g^(-1.after 2000 cycles,and a rate performance of 279 mA h g^(-1.at 20 A g^(-1..Such sodium storage properties could be attributed to the unique structure offering a highly efficient Na+diffusion kinetics with a diffusion coefficient between 1.1.^(-1.) and 3×1.^(-1.) cm^(2) *** density functional theory calculation indicates that the fast Na+diffusion mainly takes place on the(1.0)plane of MnSe along a V-shaped path because of a relatively low diffusion energy barrier of 0.1. eV.

关键词： MnSe Sodium storage mechanism High-rate performance Long-term stability Uniform nanospheres

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