检索结果-南通市图书馆

Unraveling the interfacial effect of PdBi bimetallic catalysts on promoting CO_(2)electroreduction to formate

Nano Research 2023年第8期16卷 10822-10831页

作者： Wenhui Liu Lingtong Ding Minmin Liu Xiao Wang Zhengrong Zhang Tian-Wen Jiang Shengjuan Huo Wen-Bin Cai International Joint Laboratory of Catalytic Chemistry Department of ChemistryInstitute for Sustainable EnergyCollege of SciencesShanghai UniversityShanghai 200444China Shenzhen Key Laboratory of Nanobiomechanics Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Paul C.Lauterbur Research Center for Biomedical Imaging Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Collaborative Innovation Center of Chemistry for Energy MaterialsDepartment of ChemistryFudan UniversityShanghai 200438China

Through interface engineering and content control strategy,a PdBi bimetallic interface structure was constructed for the first time to selectively convert CO_(2)to formate with a remarkably high Faraday efficiency(FEformate)of 94%and a partial current density(jformate)of 34 mA·cm^(−2)at−0.8 V vs.reversible hydrogen electrode(RHE)in an H-cell.Moreover,the PdBi interface electrocatalyst even exhibited a high current density of 180 mA·cm^(−2)with formate selectivity up to 92%in a flow cell and could steadily operate for at least 20 h.Electrochemical in-situ attenuated total reflection surface enhanced infrared absorption spectroscopy(ATR-SEIRAS)confirmed that the PdBi interface could greatly weaken the adsorption of*CO intermediates due to electronic and geometric effects.Density functional theory(DFT)calculations also established that the PdBi interface regulated the CO_(2)-to-formate pathway by reducing the energy barrier toward HCOOH and largely weakening the adsorption of*CO intermediates on the catalyst surface.This study reveals that the unique PdBi bimetallic interface can provide a novel platform to study the reaction mechanism through combining in-situ ATR-SEIRAS and DFT calculations.

关键词： carbon dioxide reduction reaction bimetallic PdBi interface engineering formate in-situ attenuated total reflection surface enhanced infrared absorption spectroscopy(ATR-SEIRAS)

来源：

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

Highly efficient and stable electrocatalyst for hydrogen evolution by molybdenum doped Ni-Co phosphide nanoneedles at high current density

引用

Nano Research 2024年第3期17卷 1066-1074页

作者： Chengyu Huang Zhonghong Xia Jing Wang Jing Zhang Chenfei Zhao Xingli Zou Shichun Mu Jiujun Zhang Xionggang Lu Hong Jin Fan Shengjuan Huo Yufeng Zhao College of Sciences&Institute for Sustainable Energy Shanghai UniversityShanghai 200444China State Key Laboratory of Metastable Materials Science and Technology Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource ReuseYanshan UniversityQinhuangdao 066004China State Key Laboratory of Advanced Special Steel and Shanghai Key Laboratory of Advanced Ferrometallurgy School of Materials Science and EngineeringShanghai UniversityShanghai 200444China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Physical and Mathematical Sciences Nanyang Technological UniversitySingapore639798

There is an increasingly urgent need to develop cost-effective electrocatalysts with high catalytic activity and stability as alternatives to the traditional Pt/C in catalysts in water electrolysis.In this study,microspheres composed of Mo-doped NiCoP nanoneedles supported on nickel foam were prepared to address this challenge.The results show that the nanoneedles provide sufficient active sites for efficient electron transfer;the small-sized effect and the micro-scale roughness enhance the entry of reactants and the release of hydrogen bubbles;the Mo doping effectively improves the electrocatalytic performance of NiCoP in alkaline media.The catalyst exhibits low hydrogen evolution overpotentials of 38.5 and 217.5 mV at a current density of 10 mA·cm^(-2) and high current density of 500 mA·cm^(-2),respectively,and only 1.978 V is required to achieve a current density of 1000 mA·cm^(-2) for overall water splitting.Density functional theory(DFT)calculations show that the improved hydrogen evolution performance can be explained as a result of the Mo doping,which serves to reduce the interaction between NiCoP and intermediates,optimize the Gibbs free energy of hydrogen adsorption(△G_(*H)),and accelerate the desorption rate of *OH.This study provides a promising solution to the ongoing challenge of designing efficient electrocatalysts for high-current-density hydrogen production.

关键词： transition metal phosphides Mo-doped NiCoP hydrogen evolution reaction gradient hydrothermal water splitting

来源：

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

负载芒刺状多元过渡金属氧化物的多孔碳材料的制备及电催化性能

引用

功能材料 2020年第8期51卷 8158-8164页

作者：夏志伟李生娟吴昆赵文艺徐以祥霍云浩上海理工大学材料科学与工程学院上海200093 上海航空电器有限公司上海201101

以原位蒸发造孔工艺制备的三维多孔碳材料(PCMs)为载体,通过水热法制备负载多元过渡金属氧化物的复合电催化材料Co2NiO4/PCMs和Ni-MnCo2O4.5/PCMs。SEM形貌表征显示芒刺状的金属氧化物负载在PCMs上,芒刺直径最小为(60±10)nm,由于PCMs... 详细信息

以原位蒸发造孔工艺制备的三维多孔碳材料(PCMs)为载体,通过水热法制备负载多元过渡金属氧化物的复合电催化材料Co2NiO4/PCMs和Ni-MnCo2O4.5/PCMs。SEM形貌表征显示芒刺状的金属氧化物负载在PCMs上,芒刺直径最小为(60±10)nm,由于PCMs的存在催化剂的比表面积明显增大。复合催化剂Ni-MnCo2O4.5/PCMs具有优异的氧还原性能和良好的稳定性,氧还原反应中极限电流密度达到-6.65 mA/cm^2,电子转移数约为3.91,在持续进行30000 s后电流密度仍保持在95.06%左右。低成本高性能的阴极材料制备工艺将大大加快催化材料在金属空气电池中的有效应用。

关键词：多孔碳材料过渡金属氧化物氧还原性能水热法

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Event-triggered mechanism based robust fault-tolerant control for networked wind energy conversion system

引用

Global Energy Interconnection 2022年第1期5卷 55-65页

作者： Zhihong huo Chang Xu College of Energy and Electrical Engineering Hohai UniversityNanjing 211100P.R.China

In this paper,a novel robust fault-tolerant control scheme based on event-triggered communication mechanism for a variable-speed wind energy conversion system(WECS)with sensor and actuator failures is proposed.The nonlinear WECS with event-triggered mechanism is modeled based on the Takagi-Sugeno(T-S)fuzzy model.By Lyapunov stability theory,the parameter expression of the proposed robust fault-tolerant controller with event-triggered mechanisms is proposed based on a feasible solution of linear matrix inequalities.Compared with the existing WECS fault-tolerant control methods,the proposed scheme significantly reduces the pressure of network packet transmission and improves the robustness and reliability of the WECS.Considering a doubly-fed variable speed constant frequency wind turbine,the eventtriggered mechanism based fault-tolerant control for WECS is analyzed considering system model uncertainty.Numerical simulation results demonstrate that the proposed scheme is feasible and effective.

关键词： Event-triggered mechanism(ETM) Wind energy conversion system(WECS) Fault-tolerant control(FTC) Takagi-sugeno(T-S)fuzzy model

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Relationship of“Humanity,Reason and Law”with Chinese Legal Traditions

引用

Frontiers of Law in China-Selected Publications from Chinese Universities 2023年第2期18卷 149-165页

作者： huo Cunfu Shenyang Normal University College of Law Shenyang 110034China

The Chinese have created the concept of“humanity,reason and law”and developed a mentality around it.Since Confucianism was highly valued in the Han Dynasty,especially during the Han,Wei,and Six Dynasties periods,the exploration and analysis of“humanity and reason”in judicial practice has been widespread.This has led to the“filtering”and examination of laws based on“humanity and reason.”The objective aspect of“humanity”refers to the facts and circumstances of a case,extending to the latent emotions of the people involved.Confucian scholars proposed the principle of“judging a case based on its original sentiments and emotions.”The subjective aspect of“humanity”refers to sentiment and emotion,such as the“willingness”or“unwillingness”of both parties in a divorce case.The combination of the objective and subjective aspects of“humanity”together with their“reason”form the essence of“humanity,reason and law”and is the main content of this concept.“Humanity,reason and law”serves as both a principle of legal formulation and a method of application and interpretation.In modern times,SHEN Jiaben and XIE Juezai were pivotal in the development of“humanity,reason and law”mentality.SHEN Jiaben facilitated the transition from tradition to modernity,while XIE Juezai integrated ancient and excellent traditions into revolutionary legal practices,giving it a modern significance.

关键词： “humanity reason and law ”humanity sentiment and reason SHEN Jiaben XIE Juezai

来源：

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

Creating an Extraterritorial Application System of Chinese Law: From the Perspective of Advancing the Rule of Law in Domestic and Foreign-Related Affairs in a Coordinated Manner

引用

Frontiers of Law in China-Selected Publications from Chinese Universities 2023年第4期18卷 531-550页

作者： huo Zhengxin School of International Law China University of Political Science and LawBeijing 100091China

The rule of law in foreign-related affairs breaks down the distinction between domestic law and international law,as well as between the rule of law in domestic affairs and that in international affairs,providing a bridge for China to build lawbased governance and to reform the global governance system for the new era.The extraterritorial application of domestic law can lead to legal conflicts between nations and conflicts between domestic law and international law.The principle of extraterritorially applying domestic law should be based on not violating the prohibitive provisions of international law and resolving legal conflicts through the conclusion of international treaties or negotiations.In the systematic undertaking of taking a coordinated approach to the rule of law in Chinese domestic and foreignrelated affairs,thebuilding ofChina's system of extraterritorial application of domestic law should be accelerated under the unified leadership by the Communist Party of China,with legislative,executive,and judicial authorities performing their respective duties.This building should be based on multilateralism,taking into account the legitimate concerns of other countries,and with the bottom line of not violating the prohibitive provisions of international law,and should be promoted with a balanced approach considering both"offense"and"defense."

关键词： rule of law in foreign-related affairs advancing the rule of law in domestic and foreign-related affairs in a coordinated manner extraterritorial effect extraterritorial application of domestic law

来源：

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

Research on key technologies of edge cache in virtual data space across WAN

引用

Frontiers of Computer Science 2023年第1期17卷 15-34页

作者： Jiantong huo Yaowen XU Zhisheng huo Limin XIAO Zhenxue HE State Key Laboratory of Software Development Environment Beihang UniversityBeijing 100191China School of Computer Science and Engineering Beihang UniversityBeijing 100191China High Performance Computing Center Beihang UniversityBeijing 100191China College of Software Beihang UniversityBeijing 100191China Hebei Key Laboratory of Agricultural Big Data Hebei Agricultural UniversityBaoding 071001China College of Computer Science and Technology Zhejiang UniversityHangZhou 310013China

The authors of this paper have previously proposed the global virtual data space system (GVDS) to aggregate the scattered and autonomous storage resources in China’s national supercomputer grid (National Supercomputing Center in Guangzhou, National Supercomputing Center in Jinan, National Supercomputing Center in Changsha, Shanghai Supercomputing Center, and Computer Network Information Center in Chinese Academy of Sciences) into a storage system that spans the wide area network (WAN), which realizes the unified management of global storage resources in China. At present, the GVDS has been successfully deployed in the China National Grid environment. However, when accessing and sharing remote data in the WAN, the GVDS will cause redundant transmission of data and waste a lot of network bandwidth resources. In this paper, we propose an edge cache system as a supplementary system of the GVDS to improve the performance of upper-level applications accessing and sharing remote data. Specifically, we first designs the architecture of the edge cache system, and then study the key technologies of this architecture: the edge cache index mechanism based on double-layer hashing, the edge cache replacement strategy based on the GDSF algorithm, the request routing based on consistent hashing method, and the cluster member maintenance method based on the SWIM protocol. The experimental results show that the edge cache system has successfully implemented the relevant operation functions (read, write, deletion, modification, etc.) and is compatible with the POSIX interface in terms of function. Further, it can greatly reduce the amount of data transmission and increase the data access bandwidth when the accessed file is located at the edge cache system in terms of performance, i.e., its performance is close to the performance of the network file system in the local area network (LAN).

关键词： virtual data space system wide area network edge cache redundant data transmission

来源：

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

From animal collective behaviors to swarm robotic cooperation

引用

National Science Review 2023年第5期10卷 82-99页

作者： Haibin Duan Mengzhen huo Yanming Fan State Key Laboratory of Virtual Reality Technology and Systems School of Automation Science and Electrical EngineeringBeihang University Virtual Reality Fundamental Research Laboratory Department of Mathematics and TheoriesPeng Cheng Laboratory AVIC Shenyang Aircraft Design and Research Institute

The collective behaviors of animals,from schooling fish to packing wolves and flocking birds,display plenty of fascinating phenomena that result from simple interaction rules among individuals.The emergent intelligent properties of the animal collective behaviors,such as self-organization,robustness,adaptability and expansibility,have inspired the design of autonomous unmanned swarm systems.This article reviews several typical natural collective behaviors,introduces the origin and connotation of swarm intelligence,and gives the application case of animal collective behaviors.On this basis,the article focuses on the forefront of progress and bionic achievements of aerial,ground and marine robotics swarms,illustrating the mapping relationship from biological cooperative mechanisms to cooperative unmanned cluster systems.Finally,considering the significance of the coexisting-cooperative-cognitive human-machine system,the key technologies to be solved are given as the reference directions for the subsequent exploration.

关键词： collective behaviors swarm intelligence cooperative robotics swarm human-machine system

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Germ-cell tumors of the central nervous system in Peking Union Medical College Hospital:A 20-year clinicopathologic review

引用

Chinese Medical Journal 2020年第2期133卷 240-242页

作者： Zhen huo Department of Pathology Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China

To the Editor:Germ-cell tumors(GCTs)of the central nervous system(CNS),the morphologic,immunophenotypic,and(in some respects)genetic homologs of gonadal and other extraneuraxial germ-cell neoplasms,principally affect children and adolescents.[1]The diagnosis of GCT of the CNS is not difficult,and the major GCT types are germinoma,teratoma,yolk sac tumor(YST),embryonal carcinoma,and choriocarcinoma.Neoplasms harboringmultiple types are calledmixed GCT(MGCT).Peak incidence of GCT of the CNS occurs in patients aged 10 to 14 years,and a clear majority of cases of all histologic types involve males.GCT of the CNS seems to be more prevalent in eastern Asia than in Europe and the United States.[1-5]In Japan,70%of patients withGCT of CNS aged 10 to 24 years and 73%were males,[6]but there were limited Chinese patients’large-scale data,only two studies reportedmore than 100 cases.[7,8]Were the types and clinical characteristics of GCTs in the CNS in Chinese patients consistent with Japan’s?We reviewed all cases of GCTs in the CNS diagnosed by pathology in Peking Union Medical College Hospital from year 1999 to 2019.We retrospectively collected and analyzed all cases underwent optical microscopy and immunohistochemical staining examinations,aiming to summarize and analyze the clinicopathologic features of them.

关键词： neoplasms clinic diagnosis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Local Well-posedness of the Derivative Schrödinger Equation in Higher Dimension for Any Large Data

引用

Chinese Annals of Mathematics,Series B 2022年第6期43卷 977-998页

作者： Boling GUO Zhaohui huo Institute of Applied Physics and Computational Mathematics P.O.Box 8009Beijing 100088China Institute of Mathematics Academy of Mathematics and Systems ScienceCASBeijing 100190China Hua Loo-Keng Key Laboratory of Mathematics Chinese Academy of SciencesBeijing 100190China

In this paper,the authors consider the local well-posedness for the derivative Schrödinger equation in higher dimension ut-iΔu+|u|^(2)(→γ·▽u)+u^(2)(→λ·▽-u)=0,(x,t)∈R^(n)×R,→γ,→λ∈R^(n);n≥2 It is shown that the Cauchy problem of the derivative Schrödinger equation in higher dimension is locally well-posed in H^(s)(R^(n))(s>n/2)for any large initial data.Thus this result can compare with that in one dimension except for the endpoint space H^(n/2).

关键词： Well-posedness Derivative Schrödinger equation in higher dimension Short-time Xs b Large initial data

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：