检索结果-南通市图书馆

Advanced Powder Materials 2024年第5期3卷 80-90页

作者： Guangping Yang Tianxiang Yang Zhiguo Wang Ke Wang Mengmeng Zhang Peter DLund sining yun Functional Materials Laboratory(FML) School of Materials Science and EngineeringXi'an University of Architecture and TechnologyXi'an 710055China New Energy Technologies Group Department of Applied PhysicsSchool of ScienceAalto UniversityP.O.Box 15100FI-00076AaltoEspooFinland

Tuning the surface properties of catalysts is an effective method for accelerating water ***,we propose a directional doping and interfacial coupling strategy to design two surface-functionalized Schottky junction catalysts for coordinating the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER).Directional doping with B/S atoms endows amphiphilic g-C_(3)N_(4)with significant n-/p-type semiconductor *** coupling with Fe_(3)C modulates the energy band levels of B-C_(3)N_(4)and S-C_(3)N_(4),thus resulting in functionalized Schottky junction catalysts with specific surface-adsorption *** space-charge region generated by the dual modulation induces a local“OH-and Ht-enriched”environment,thus selectively promoting the kinetic behavior of the OER/***,the designed B-C_(3)N_(4)@Fe_(3)C||S-C_(3)N_(4)@Fe_(3)C pair requires only a low voltage of 1.52 V to achieve efficient water electrolysis at 10 mA cm^(-2).This work highlights the potential of functionalized Schottky junction catalysts for coordinating redox reactions in water electrolysis,thereby resolving the trade-off between catalytic activity and stability.

关键词： Nonmetallic doping Space charge region Schottky junction Kinetic behavior Redox reaction

Waste-Derived Catalysts for Water Electrolysis:Circular Economy-Driven Sustainable Green Hydrogen Energy

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2023年第1期15卷 43-79页

作者： Zhijie Chen sining yun Lan Wu Jiaqi Zhang Xingdong Shi Wei Wei Yiwen Liu Renji Zheng Ning Han Bing-Jie Ni Centre for Technology in Water and Wastewater(CTWW) School of Civil and Environmental EngineeringUniversity of Technology SydneyUltimoNSW 2007Australia Functional Materials Laboratory(FML) School of Materials Science and EngineeringXi’an University of Architecture and TechnologyXi’an 710055People’s Republic of China School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083People’s Republic of China Department of Materials Engineering KU Leuven3001 LouvainBelgium

The sustainable production of green hydrogen via water electrolysis necessitates cost-effective *** following the circular economy principle,the utilization of waste-derived catalysts significantly promotes the sustainable development of green hydrogen ***,diverse waste-derived catalysts have exhibited excellent catalytic performance toward hydrogen evolution reaction(HER),oxygen evolution reaction(OER),and overall water electrolysis(OWE).Herein,we systematically examine recent achievements in waste-derived electrocatalysts for water *** general principles of water electrolysis and design principles of efficient electrocatalysts are discussed,followed by the illustration of current strategies for transforming wastes into ***,applications of waste-derived catalysts(i.e.,carbon-based catalysts,transitional metal-based catalysts,and carbon-based heterostructure catalysts)in HER,OER,and OWE are reviewed *** emphasis is put on correlating the catalysts’structure-performance ***,challenges and research directions in this booming field are finally *** review would provide useful insights into the design,synthesis,and applications of waste-derived electrocatalysts,and thus accelerate the development of the circular economy-driven green hydrogen energy scheme.

关键词： Waste-derived electrocatalysts Water splitting Sustainable hydrogen energy Catalyst design Circular economy

Electrocatalytic oxidation of 5-hydroxymethylfurfural for sustainable 2,5-furandicarboxylic acid production-From mechanism to catalysts design

在线全文

学校读者我要写书评

暂无评论

SusMat 2023年第1期3卷 21-43页

作者： Xiaoli Jiang Wei Li Yanxia Liu Lin Zhao Zhikai Chen Lan Zhang Yagang Zhang sining yun School of Materials and Energy University of Electronic Science and Technology of ChinaChengduChina State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of ChinaChengduChina Univ Lyon CNRSINSA-LyonUniversite Claude Bernard Lyon 1VilleurbanneFrance School of Materials Science and Engineering Xi’an University of Architecture and TechnologyXi’anChina

Catalytic conversion of biomass-based platform chemicals is one of the significant approaches to utilize renewable biomass resources.2,5-Furandicarboxylic acid(FDCA),obtained by an electrocatalytic oxidation of 5-hydroxymethylfurfural(HMF),has attracted extensive attention due to the potential of replacing terephthalic acid to synthesize high-performance polymeric materials for *** the present work,the pHdependent reaction pathways and factors influencing the degree of functional group oxidation are first *** the reaction mechanism of HMF oxidation is further elucidated using the representative *** addition,the emerging catalyst design strategies(defects,interface engineering)used in HMF oxidation are generalized,and structure-activity relationships between the abovementioned strategies and catalysts performance are ***,cathode pairing reactions,such as hydrogen evolution reaction,CO_(2) reduction reaction(CO_(2)RR),oxygen reduction reaction,and thermodynamically favorable organic reactions to lower the cell voltage of the electrolysis system,are ***,the challenges and prospects of the electrochemical oxidation of HMF for FDCA are presented,focusing on deeply investigated reaction mechanism,coupling reaction,reactor design,and downstream product separation/purification.

关键词： 5-hydroxymethylfurfural catalysts design strategies electrocatalytic oxidation pairing reactions reaction mechanism

Semiconductor Electrochemistry for Clean Energy Conversion and Storage

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Electrochemical Energy Reviews 2021年第4期4卷 757-792页

作者： Bin Zhu Liangdong Fan Naveed Mushtaq Rizwan Raza Muhammad Sajid Yan Wu Wenfeng Lin Jung‑Sik Kim Peter D.Lund sining yun Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Joint Research Center School of Energy and EnvironmentSoutheast UniversityNanjing 210096JiangsuChina Shenzhen Key Laboratory of New Lithium‑Ion Batteries and Mesoporous Materials College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060GuangdongChina Clean Energy Research Lab(CERL) Department of PhysicsCOMSATS University IslamabadLahore CampusLahore 54000Pakistan Engineering Research Center of Nano‑Geo Materials of Ministry of Education Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074HubeiChina Department of Chemical Engineering School of AeronauticalAutomotiveChemical and Materials EngineeringLoughborough UniversityLoughborough LE113TUUK Department of Aeronautical&Automotive Engineering School of AeronauticalAutomotiveChemical and Materials EngineeringLoughborough UniversityLoughborough LE113TUUK Department of Engineering Physics/Advanced Energy Systems School of ScienceAalto University00076 AaltoEspooFinland Functional Materials Laboratory(FML) School of Materials Science and EngineeringXi’an University of Architecture and TechnologyXi’an 710055ShaanxiChina

Semiconductors and the associated methodologies applied to electrochemistry have recently grown as an emerging field in energy materials and *** example,semiconductor membranes and heterostructure fuel cells are new technological trend,which differ from the traditional fuel cell electrochemistry principle employing three basic functional components:anode,electrolyte,and *** electrolyte is key to the device performance by providing an ionic charge flow pathway between the anode and cathode while preventing electron *** contrast,semiconductors and derived heterostructures with electron(hole)conducting materials have demonstrated to be much better ionic conductors than the conventional ionic *** energy band structure and alignment,band bending and built-in electric field are all important elements in this context to realize the necessary fuel cell *** review further extends to semiconductor-based electrochemical energy conversion and storage,describing their fundamentals and working principles,with the intention of advancing the understanding of the roles of semiconductors and energy bands in electrochemical devices for energy conversion and storage,as well as applications to meet emerging demands widely involved in energy applications,such as photocatalysis/water splitting devices,batteries and solar *** review provides new ideas and new solutions to problems beyond the conventional electrochemistry and presents new interdisciplinary approaches to develop clean energy conversion and storage technologies.

关键词： Semiconductor electrochemistry Fuel cells Lithium-ion batteries Solar cells Built-in electric field Energy system integration

改进的工艺路线制备化学计量比的PZN基钙钛矿陶瓷(英文)

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

稀有金属材料与工程 2006年第A2期35卷 267-271页

作者：云斯宁王晓莉西安交通大学理学院陕西西安710049

采用改进的工艺路线制备了化学计量比的Pb(Zn1／3Nb2/3)O3-PbTiO3-BaTiO3陶瓷,二氧化钛和碳酸钡不经过预烧,与预反应粉体混合球磨,成型后直接烧结,在1100℃和1120℃分别保温1 h,2 h,4 h获得了100％钙钛矿结构的PZN-PT-BT陶瓷,最大密度7... 详细信息

采用改进的工艺路线制备了化学计量比的Pb(Zn1／3Nb2/3)O3-PbTiO3-BaTiO3陶瓷,二氧化钛和碳酸钡不经过预烧,与预反应粉体混合球磨,成型后直接烧结,在1100℃和1120℃分别保温1 h,2 h,4 h获得了100％钙钛矿结构的PZN-PT-BT陶瓷,最大密度7．418 g／cm3,最大介电常数7672。

关键词： PZN-PT-BT陶瓷预烧改进的工艺介电性能

(Ba_(1-x)Sr_(x/2)Ca_(x/2))TiO_3陶瓷的介电弛豫特征和铁电性能

在线全文

学校读者我要写书评

暂无评论

硅酸盐学报 2006年第2期34卷 142-146页

作者：云斯宁王晓莉西安交通大学理学院西安710049

采用传统陶瓷的制备方法,制备了(Ba1-xSrx/2Cax/2)TiO3(x=0.10,0.20,0.40,0.50,0.60)铁电陶瓷。X射线衍射分析表明:x=0.20时,陶瓷样品具有三方、四方共存的晶体结构。不同频率下陶瓷样品的介电温谱显示(Ba1-xSrx/2Cax/2)TiO3材料具有弥... 详细信息

采用传统陶瓷的制备方法,制备了(Ba1-xSrx/2Cax/2)TiO3(x=0.10,0.20,0.40,0.50,0.60)铁电陶瓷。X射线衍射分析表明:x=0.20时,陶瓷样品具有三方、四方共存的晶体结构。不同频率下陶瓷样品的介电温谱显示(Ba1-xSrx/2Cax/2)TiO3材料具有弥散相变的特征,在x=0.60时,(Ba1-xSrx/2Cax/2)TiO3陶瓷具有典型的弛豫铁电体特征。研究发现:当x=0.20时,(Ba1-xSrx/***/2)TiO3陶瓷材料的矫顽电场达到极小值。基于极性纳米微区理论的观点,进一步研究了弛豫铁电体和具有弥散相变铁电体两者之间的关系,结果表明:仅仅当实验频率和极性纳米微区的弛豫频率相近时,在弥散相变温区内介电弛豫行为才能被观察到。

关键词：钛酸钙锶钡弥散相变介电弛豫铁电性能

融合残差与VMD-ELM-LSTM的短期风速预测

在线全文

学校读者我要写书评

暂无评论

太阳能学报 2023年第9期44卷 340-347页

作者：张琰妮史加荣李津云斯宁西安建筑科技大学理学院西安710055 西安建筑科技大学材料科学与工程学院西安710055

准确可靠的风速预测有利于维护电力系统的安全运行。为提高预测精度,本文提出一种融合残差与变分模态分解(VMD)、极限学习机(ELM)、长短时记忆(LSTM)的短期风速预测模型。首先,VMD算法将风速序列分解为若干个子序列以降低原始数据复杂... 详细信息

准确可靠的风速预测有利于维护电力系统的安全运行。为提高预测精度,本文提出一种融合残差与变分模态分解(VMD)、极限学习机(ELM)、长短时记忆(LSTM)的短期风速预测模型。首先,VMD算法将风速序列分解为若干个子序列以降低原始数据复杂度。接着将ELM作为初始预测引擎,用来提取各风速子序列特征。然后,对所有预测子序列进行重构,得到初步预测结果。为进一步挖掘原始风速序列中的不平稳特征,采用LSTM对初步预测结果的残差进行建模。最后,集成预测的残差与初步结果,得到最终的预测值。在真实风电场数据上开展实验,并将预测结果与其他模型对比。实验结果表明,所提模型能显著提升风速序列的预测性能。

关键词：风力发电风速预测变分模态分解长短时记忆极限学习机残差序列

在线全文

学校读者我要写书评

暂无评论

基于最大信息系数的短期太阳辐射协同估计

太阳能学报 2023年第9期44卷 286-294页

作者：李津史加荣张琰妮云斯宁西安建筑科技大学理学院西安710055 西安建筑科技大学材料科学与工程学院西安710055

提出一种短期太阳辐射估计的协同方法,即利用邻近站点数据来估计目标站点的太阳辐射。先利用最大信息系数对所有站点的相关数据进行特征选择。然后将特征选择后的数据作为输入,采用不同的机器学习模型进行估计。最后在实际数据上将协同... 详细信息

提出一种短期太阳辐射估计的协同方法,即利用邻近站点数据来估计目标站点的太阳辐射。先利用最大信息系数对所有站点的相关数据进行特征选择。然后将特征选择后的数据作为输入,采用不同的机器学习模型进行估计。最后在实际数据上将协同估计的误差与仅采用目标站点的估计误差进行比较。实验结果表明协同估计对所有目标站点都有更高的精度和更低的误差。

关键词：太阳辐射机器学习特征选择协同估计最大信息系数

Pb(Zn_(1/3)Nb_(2/3))O_3基陶瓷预合成和烧结工艺的研究

在线全文

学校读者我要写书评

暂无评论

硅酸盐通报 2005年第2期24卷 3-7页

作者：云斯宁王晓莉西安交通大学理学院西安710049

基于Swartz and Shrout的二次合成法,采用改进的两步法,将部分原料预合成,一次烧结合成具有100%钙钛矿结构的75Pb(Zn_(1/3)Nb_(2/3))O_3-10PbTiO_3-15BaTiO_3固溶体陶瓷。首先一次性称量PbO,然后和ZnNb_2O_6混合,在660～800℃预合成,将预合成产物粉碎后再与TiO_2和BaCO_3按化学计量称量,充分混合后,在1060～1140℃保温1～2h烧结成陶瓷试样。实验结果表明:改进的两步法工艺能够将预合成温度降为660℃,烧结温度能被拓宽到80℃获得100%钙钛矿结构的固溶体陶瓷。不同于传统的预合成和烧结,改进的两步法工艺简单、有效,在预合成阶段没有形成钙钛矿相,烧结阶段陶瓷的成瓷和致密化同时进行,完成了中间相向钙钛矿相的转变,获得了介电性能优良的陶瓷试样。

关键词： Pb(Zn1/3Nb2/3)O3 电子陶瓷烧结工艺合成工艺铌锌酸铝

在线全文

学校读者我要写书评

暂无评论

生物质燃料压缩成型技术研究进展

化工新型材料 2016年第9期44卷 42-44页

作者：胡谢利云斯宁尚建丽西安建筑科技大学材料与矿资学院西安710055

介绍生物质燃料压缩成型技术的基本原理、生产工艺及研究现状,重点讨论影响生物质燃料压缩成型的因素、生物质燃料的物理特性和燃烧特性,指出生物质燃料压缩成型技术在实际生产中存在的问题及未来发展方向。

关键词：生物质燃料生物质成型物理特性燃烧特性