检索结果-内蒙古大学图书馆

Highly active macrocyclic nickel(II) complex for hydrogen evolution reaction in neutral aqueous conditions

International Journal of Hydrogen Energy 2023年第87期48卷 33927-33936页

作者： Shahadat, Hossain M. Ahmad, Nazir Khattak, Zafar A.K. Abdur, Rahaman M. Al-Hajri, Rashid Al-Abri, Mohammed Kao, Chih-Ming Younus, Hussein A. Verpoort, Francis State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Department of Chemistry Faculty of Science Comilla University Comilla3506 Bangladesh Nanotechnology Research Centre Sultan Qaboos University PO Box 17 Al-Khoud PC 123 Oman Department of Chemical and Petroleum Engineering College of Engineering Sultan Qaboos University P.O Box 33 Al Khould Muscat PC 123 Oman Chemistry Department Faculty of Science Fayoum University Fayoum63514 Egypt Department of Chemistry Government College University Lahore Lahore54000 Pakistan Department of Chemistry Faculty of Science Mawlana Bhashani Science and Technology University Tangail1902 Bangladesh National Research Tomsk Polytechnic University Lenin Avenue 30 Tomsk634050 Russia Institute of Environmental Engineering National Sun Yat-Sen University Kaohsiung Taiwan

Hydrogen (H2) production via water splitting under completely aqueous conditions particularly using an earth-abundant component for both half reactions is very appealing and may reduce our dependence on fossil fuels. In this work, we present a water-soluble molecular nickel(II) complex bearing a macrocyclic N‒heterocyclic carbene (NHC)/pyridine hybrid ligand, ([NiL](PF6)2 (L = bis(2‒pyridyl-methylimidazolylidene)methane as a catalyst for hydrogen evolution reaction (HER) under completely aqueous conditions. The catalyst displayed an outstanding catalytic activity for HER in a phosphate electrolyte of neutral pH, as established by a series of techniques. Long-term (11 h) bulk electrolysis at 0.88 V overpotential provides a maximum of 173.5C charge and total ca. 165.08 μmol (∼15 μmol per hour) H2 with Faradaic efficiency of 98%, while without a catalyst less than 3C was produced within the same time. To the best of our knowledge, the investigation of water reduction with Ni–NHC type catalyst under aqueous conditions has not been reported to date. © 2023 Hydrogen Energy Publications LLC

关键词： Catalyst activity

来源：评论

学校读者我要写书评

暂无评论

Embedding tin disulfide nanoparticles in twodimensional porous carbon nanosheet interlayers for fast-charging lithium-sulfur batteries

引用

Science China materials 2021年第11期64卷 2697-2709页

作者： Na Zhou Wen-Da Dong Yun-Jing Zhang Di Wang Liang Wu Lang Wang Zhi-Yi Hu Jing Liu Hemdan S.H.Mohamed Yu Li Li-Hua Chen Bao-Lian Su State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Nanostructure Research Center(NRC) Wuhan University of TechnologyWuhan 430070China Physics Department Faculty of ScienceFayoum UniversityEl Gomhoria Street63514 FayoumEgypt Laboratory of Inorganic Materials Chemistry(CMI) University of Namur61 rue de BruxellesB-5000 NamurBelgium

Lithium-sulfur(Li-S)batteries have attracted significant attention for their high specific capacity,non-toxic and harmless ***,the shuttle effect limits their *** this work,small-sized tin disulfide(SnS_(2))nanoparticles are embedded between interlayers of twodimensional porous carbon nanosheets(PCNs),forming a multi-functional nanocomposite(PCN-SnS_(2))as a cathode carrier for Li-S *** graphitized carbon nanosheets improve the overall conductivity of the electrode,and the abundant pores not only facilitate ion transfer and electrolyte permeation,but also buffer the volume change during the charge and discharge process to ensure the integrity of the electrode *** importantly,the physical confinement of PCN,as well as the strong chemical adsorption and catalytic reaction of small SnS_(2)nanoparticles,synergistically reduce the shuttle effect of *** interaction between a porous layered structure and physical-chemical confinement gives the PCN-SnS_(2)-S electrode high electrochemical *** at a high rate of 2 C,a discharge capacity of 650 mA h g^(-1)is maintained after 150 cycles,underscoring the positive results of SnS_(2)-based materials for Li-S *** galvanostatic intermittent titration technique results further confirm that the PCN-SnS_(2)-S electrode has a high Li+transmission rate,which reduces the activation barrier and improves the electrochemical reaction *** work provides strong evidence that reducing the size of SnS_(2)nanostructures is beneficial for capturing and reacting with polysulfides to alleviate their shuttle effect in Li-S batteries.

关键词： tin disulfide nanoparticles porous carbon nanosheets lithium-sulfur batteries galvanostatic intermittent titration technique density functional theory

来源：评论

学校读者我要写书评

暂无评论

Evolution of γ’ Particles in Ni-Based Superalloy Weld Joint and Its Effect on Impact Toughness During Long-Term Thermal Exposure

引用

Acta Metallurgica Sinica(English Letters) 2020年第4期33卷 561-572页

作者： Xian-Kai Fan Fu-Quan Li Lei Liu Hai-Chao Cui Feng-Gui Lu Xin-Hua Tang Shanghai Key Laboratory of Materials Laser Processing and Modification School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Lab of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150006China Shanghai Turbine Plant of Shanghai Electric Power Generation Equipment Co.Ltd Shanghai 200240China

Effects of long-term thermal exposure on γ’ particles evolution and impact toughness in the weld joint of Nimonic 263(N263)superalloy were deeply studied at 750℃.Results showed that the precipitates in the weld metal were mainly composed of fine γ’ particles,bulky MC carbides,and small M23C6 *** the thermal exposure time increasing from o to 3000 h,γ’ particles in the weld metal grew up from 19.7 nm to 90.1 nm at an extremely slow *** being exposed for 1000 h,γ’ particles coarsened and some of them transformed into acicular η *** the same time,MC carbides decomposed to form η phase and γ’ *** dynamic transition ensured the slight reduction in impact toughness of the weld metal after the thermal exposure,which indicated the stable serving performance of N263 weld joint.

关键词： Ni-based superalloy Weld joint Long-term thermal exposure γ’Phase evolution Impact toughness

来源：评论

学校读者我要写书评

暂无评论

A Nd@C₈₂–polymer interface for efficient and stable perovskite solar cells

引用

Nature 2025年第8066期642卷 78-84页

作者： Lin, Yuexin Lin, Zhichao Lv, Shili Shui, Yuan Zhu, Wenjing Zhang, Zuhong Yang, Wenhan Zhao, Jinbo Gu, Hao Xia, Junmin Wang, Danning Du, Fenqi Zhu, Annan Liu, Jin Cai, Hairui Wang, Bin Zhang, Nan Wang, Haibin Liu, Xiaolong Liu, Tao Kong, Chuncai Zhou, Di Chen, Shi Yang, Zhimao Li, Tao Ma, Wei Fang, Guojia Echegoyen, Luis Xing, Guichuan Yang, Shengchun Yang, Tao Cai, Wenting Li, Meng Huang, Wei Liang, Chao MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of Physics National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology Xi’an Jiaotong University Xi’an China College of Material Engineering Fujian Agriculture and Forestry University Fuzhou China School of Chemistry Xi’an Jiaotong University Xi’an China Key Lab for Special Functional Materials of Ministry of Education School of Nanoscience and Materials Engineering Henan University Kaifeng China Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials Engineering University of Macau Avenida da Universidade Macao State Key Laboratory of Organic Electronics and Information Displays Nanjing University of Posts and Telecommunications Nanjing China Institute of Advanced Ceramics Henan Academy of Sciences Zhengzhou China State Key Laboratory of Crystal Materials & Institute of Crystal Materials Shandong University Jinan China Key Laboratory of Multifunctional Materials and Structures Ministry of Education School of Electronic Science and Engineering Xi’an Jiaotong University Xi’an China State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and Engineering Xi’an Jiaotong University Xi’an China Key Laboratory of Artificial Micro/Nano Structures of Ministry of Education School of Physics and Technology Wuhan University Wuhan China Department of Chemistry The University of Texas at El Paso El Paso TX United States Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Tarragona Spain Institute of Flexible Electronics (IFE) Northwestern Polytechnical University (NPU) Xi’an China

An important challenge in the commercialization of perovskite solar cells (PSCs) is the simultaneous attainment of high power conversion efficiency (PCE) and high stability. Using polymer interfaces in PSCs can enhance durability by blocking water and oxygen and by suppressing ion interdiffusion, but their electronic shielding poses a challenge for efficient and stable PSCs^{1, 2–3}. Here we report a magnetic endohedral metallofullerene Nd@C₈₂–polymer coupling layer, which features ultrafast electron extraction and in situ encapsulation, thereby promoting homogeneous electron extraction and suppressing ion interdiffusion. The Nd@C₈₂–polymer coupling layer in PSCs exhibited a PCE of 26.78% (certified 26.29%) and 23.08% with an aperture area of 0.08 cm² and 16 cm² (modules), respectively. The unencapsulated devices retained about 82% of the initial PCE after 2,500 h of continuous 1-sun maximum power point operation at 65 °C. © The Author(s), under exclusive licence to Springer Nature Limited 2025.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Strong Solvent Coordination Effect Inducing Gradient Solid-Electrolyte-Interphase Formation for Highly Efficient Mg Plating/Stripping

SSRN

引用

SSRN 2023年

作者： Du, Yaoyao Chen, Yanmin Tan, Shuangshuang Chen, Jinlong Huang, Xueting Cui, Lianmeng Long, Juncai Wang, Zhongting Yao, Xuhui Shang, Bo Huang, Guangsheng Zhou, Xiaoyuan Li, Lingjie Wang, Jinfeng Pan, Fusheng School of Chemistry and Chemical Engineering Chongqing University Chongqing400044 China School of Materials Science and Engineering Chongqing University Chongqing400044 China National Engineering Research Center for Magnesium Alloys Chongqing University Chongqing400044 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Advanced Technology Institute University of Surrey Guildford SurreyGU2 7XH United Kingdom College of Physics Center of Quantum Materials and Devices Chongqing University Chongqing401331 China

Developing simple Mg-salt electrolytes without chlorine-containing additives is vital for the technical viability of rechargeable magnesium batteries (RMBs). However, the formation of ion-blocking passivation layer on Mg anode in these electrolytes severely hinders the reversible Mg plating/stripping. Here, we successfully designed a highly efficient and chlorine-free Mg(SO3CF3)2/ether electrolyte by introducing 2-methoxyethylamine (MOEA) with a strongly nucleophilic amidogen (-NH2) donor to competing solvation coordination. The preferred decomposition of MOEA in MOEA-coordinated Mg-ion complex generates organic N-containing species in the inner layer, thus forming the gradient organic-inorganic SEI. This gradient SEI enables a fast interfacial Mg2+ migration and uniform Mg plating/stripping at 5 mA cm−2 with 5 mAh cm−2. The Mg(SO3CF3)2/ether/MOEA electrolyte exhibits high oxidation stability (3.5 V vs. Mg/Mg2+), high average Coulombic efficiency (99.3 %, 1000 cycles), excellent rate performance (low overpotential of 570 mV at 7.5 mA cm−2) and good compatibility with Mo6S8 cathode in coin (300 cycles at 1 C) and pouch cells, when using 50 μm Mg anode. Importantly, the relationships between solvation configuration, SEI chemistry and battery performance were successfully built for guiding the design of simple Mg-salt electrolytes in RMBs. © 2023, The Authors. All rights reserved.

关键词： Solvation

来源：评论

学校读者我要写书评

暂无评论

Hydroxylated high-entropy alloy as highly efficient catalyst for electrochemical oxygen evolution reaction

引用

Science China materials 2020年第12期63卷 2613-2619页

作者： Peiyan Ma Shichao Zhang Mutian Zhang Junfeng Gu Long Zhang Yuchen Sun Wei Ji Zhengyi Fu School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Oxygen evolution reaction(OER),a half reaction involved in electrochemical water splitting,CO2 reduction,and metal–air batteries,restricts the efficiency of these energy conversion systems due to sluggish reaction kinetics[1,2].To accelerate OER,highly efficient electrocatalysts are ***,large-scale applications of the normally used OER catalysts(***2 and IrO2)are hampered by their instability and low *** is highly desirable to develop earth-abundant catalysts with low cost,high activity and long-term ***(Ni,Fe)(oxy)hydroxides(Co(Ni)-(O)OH)have emerged as promising OER catalysts in recent years[3].

关键词： Tafel斜率高熵合金电催化剂电化学活性羟基化超电势电化学活化高效催化剂

来源：评论

学校读者我要写书评

暂无评论

Recent development of implantable and flexible nerve electrodes

引用

Smart materials in Medicine 2020年 1卷 131-147页

作者： Shi, Yue Liu, Ruping He, Liang Feng, Hongqing Li, Ye Li, Zhou Beijing Institute of Graphic Communication Beijing102600 China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and Sensor Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing100083 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

Implantable electrical devices offer a variety of potential diagnostic options and treatments in different medical fields. Especially in the absence of specific drugs, the implantable nerve electrodes (INEs) are one of the main treatments for neurological diseases such as epilepsy, Parkinson's disease, Alzheimer's disease, etc. INEs are helpful in studying and regulating nervous system via recording nerve electrical signals or stimulating nerve tissue, but the mechanical mismatch between rigid electrode and soft biological tissue is a critical challenge for long-term implantation. The advances in micromachining technologies and materials have greatly promoted the development of INEs, such as enhanced biocompatibility, reduced foreign body reactions, and structural innovation. In particular, the mechanical performances of flexible implantable electrode and soft biological tissue matched better with less tissue damage. In this review, the implantable flexible nerve electrodes (IFNEs) based on functionalized substrates, intelligent electrodes, and innovative structures are elaborated and discussed. We summarized their various applications in neural prosthesis and neural signal recording. We also discussed the questions and possible methods for developing future IFNEs in the perspective. © 2020 The Authors

关键词： Electrodes

来源：评论

学校读者我要写书评

暂无评论

Single-Atom Catalysts for Electrochemical Hydrogen Evolution Reaction: Recent Advances and Future Perspectives

引用

Nano-Micro Letters 2020年第2期12卷 73-101页

作者： Zonghua Pu Ibrahim Saana Amiinu Ruilin Cheng Pengyan Wang Chengtian Zhang Shichun Mu Weiyue Zhao Fengmei Su Gaixia Zhang Shijun Liao Shuhui Sun Institut National de la Recherche Scientifique-Énergie Matériaux et Télécommunications VarennesQC J3X 1S2Canada State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China The Key Laboratory of Fuel Cell Technology of Guangdong Province The Key Laboratory of New Energy Technology of Guangdong UniversitiesSchool of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510641People’s Republic of China Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002People’s Republic of China

Hydrogen,a renewable and outstanding energy carrier with zero carbon dioxide emission,is regarded as the best alternative to fossil *** most preferred route to large-scale production of hydrogen is by water electrolysis from the intermittent sources(e.g.,wind,solar,hydro,and tidal energy).However,the efficiency of water electrolysis is very much dependent on the activity of ***,designing high-effective,stable,and cheap materials for hydrogen evolution reaction(HER)could have a substantial impact on renewable energy ***,single-atom catalysts(SACs)have emerged as a new frontier in catalysis science,because SACs have maximum atom-utilization efficiency and excellent catalytic reaction *** synthesis methods and analytical techniques have been adopted to prepare and characterize these *** this review,we discuss recent progress on SACs synthesis,characterization methods,and their catalytic ***,we highlight their unique electrochemical characteristics toward ***,the current key challenges in SACs for HER are pointed out and some potential directions are proposed as well.

关键词： Single-atom catalysts Nanomaterials Electrocatalyst Hydrogen evolution reaction Electrochemical energy conversion

来源：评论

学校读者我要写书评

暂无评论

Electrically controlled nonvolatile switching of single-atom magnetism in a Dy@C84 single-molecule transistor

arXiv

引用

arXiv 2024年

作者： Wang, Feng Shen, Wangqiang Shui, Yuan Chen, Jun Wang, Huaiqiang Wang, Rui Qin, Yuyuan Wang, Xuefeng Wan, Jianguo Zhang, Minhao Lu, Xing Yang, Tao Song, Fengqi National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures School of Physics Nanjing University Nanjing210093 China Institute of Atom Manufacturing Nanjing University Suzhou215163 China State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China School of Materials Science and Engineering Hefei University of Technology Hefei230009 China MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter School of Physics Xi'an Jiaotong University Xi’an710049 China Center for Quantum Transport and Thermal Energy Science School of Physics and Technology Nanjing Normal University Nanjing210023 China School of Electronic Science and Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing210023 China

Single-atom magnetism switching is a key technique towards the ultimate data storage density of computer hard disks and has been conceptually realized by leveraging the spin bistability of a magnetic atom under a scanning tunnelling microscope. However, it has rarely been applied to solid-state transistors, an advancement that would be highly desirable for enabling various applications. Here, we demonstrate realization of the electrically controlled Zeeman effect in Dy@C84 single-molecule transistors, thus revealing a transition in the magnetic moment from 3.8 μB to 5.1 μB for the ground-state GN at an electric field strength of 3 − 10 MV/cm. The consequent magnetoresistance significantly increases from 600% to 1100% at the resonant tunneling point. Density functional theory calculations further corroborate our realization of nonvolatile switching of single-atom magnetism, and the switching stability emanates from an energy barrier of 92 meV for atomic relaxation. These results highlight the potential of using endohedral metallofullerenes for high-temperature, high-stability, high-speed, and compact single-atom magnetic data storage. © 2024, CC BY.

关键词： Magnetic storage

来源：评论

学校读者我要写书评

暂无评论

Post-annealing tailored 3D cross-linked TiNb2O7 nanorod electrode: towards superior lithium storage for flexible lithium-ion capacitors

引用

Science China materials 2020年第4期63卷 492-504页

作者： Bohua Deng Haoyang Dong Tianyu Lei Ning Yue Liang Xiao Jinping Liu School of Chemistry Chemical Engineering and Life SciencesWuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

TiNb2O7 anode materials(TNO)have unique potential for applications in Li-ion capacitors(LICs)due to their high specific capacity of ca.280 mA h g^-1 over a wide anodic Li-insertion potential ***,their highrate capability is limited by their poor electronic and ionic *** particular,studies on TNO for LICs are lacking and that for flexible LICs have not yet been ***,a unique TNO porous electrode with cross-linked nanorods tailored by post-annealing and its application in flexible LICs are *** binder-free TNO anode exhibits superior rate performance(~66.3%capacity retention as the rate increases from 1 to 40 C),which is ascribed to the greatly shortened ion-diffusion length in TNO nanorods,facile electrolyte penetration and fast electron transport along the continuous single-crystalline nanorod ***,the TNO anode shows an excellent cycling stability up to 2000 cycles and good flexibility(no capacity loss after continuous bending for 500 times).Model flexible LIC assembled with the TNO anode and activated carbon cathode exhibits increased gravimetric and volumetric energy/power densities(~100.6 W h kg^-1/4108.8 W kg^-1;10.7 mW h cm^-3/419.3 mW cm^-3),more superior to previously reported hybrid *** device also efficiently powers an LED light upon 180°bending.

关键词： post-annealing cross-linked nanorods facile electron transport superior rate performance flexible Li-ion capacitors

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：