检索结果-南通市图书馆

Electrochemical hydrogen storage properties of Mg100-xNix produced by hydriding combustion synthesis and mechanical milling

引用

Progress in Natural Science:Materials International 2017年第1期27卷 144-148页

作者： Delong Zhu Jiguang Zhang Yunfeng Zhu Yao Zhang Yana Liu Huaijun Lin Wenfeng Zhang Liquan Li College of Materials Science and Engineering Nanjing Tech University Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites Nanjing Tech University School of Materials Science and Engineering Southeast University

In this work, Mg-based hydrogen storage composites with an initial 100-x: x（x=25, 32.3, 50, 66.7） of Mg:Ni molar ratio were prepared by HCS+MM and their phase compositions and electrochemical performances were investigated in detail. The results show that the composites with desirable constituents can be achieved by adjusting the molar ratio of the starting materials in the HCS process. Particularly, the HCS product of Mg67.7Ni32.3consists of the principal phase Mg2NiH4and minor phase Mg2NiH0.3. The dominate phase varies from Mg2NiH0.3and MgH2for the Mg enriched sample（x 32.3）. The MM modification not only brings about grain refinement of the alloys, but also leads to phase transformation of part Mg2NiH4to Mg2NiH0.3in the Mg67.7Ni32.3sample. Electrochemical tests indicate that each sample can reach its maximum discharge capacity at the first cycle. Mg67.7Ni32.3displays the highest discharge capacity as well as a superior electrochemical kinetics owing to its excellent H atom diffusion ability and lower charge-transfer resistance. The Mg67.7Ni32.3provides the most optimized Mg/Ni atomic ratio considering the comprehensive electrochemical properties of all samples.

关键词： magnesium-based hydride Electrochemical performance Hydriding combustion synthesis

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

magnesium nickel hydride monocrystalline nanoparticles for reversible hydrogen storage

引用

Materials Reports(Energy) 2024年第1期4卷 104-112页

作者： Yingyan Zhao Yunfeng Zhu Rui Shi Jiguang Zhang Yana Liu Jun Wang Liquan Li College of Materials Science and Engineering Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function CompositesNanjing Tech University30 South Puzhu RoadNanjing211816PR China

Although Mg-based hydrides are extensively considered as a prospective material for solid-state hydrogen storage and clean energy carriers,their high operating temperature and slow kinetics are the main challenges for practical ***,a Mg-Ni based hydride,Mg_(2)NiH_(4) nanoparticles(~100 nm),with dual modification strategies of nanosizing and alloying is successfully prepared via a gas-solid preparation *** is demonstrated that Mg_(2)NiH_(4) nanoparticles form a unique chain-like structure by oriented stacking and exhibit impressive hydrogen storage performance:it starts to release H2 at~170℃ and completes below 230℃ with a saturated capacity of 3.32 wt%and desorbs 3.14 wt% H_(2) within 1800 s at 200℃.The systematic characterizations of Mg_(2)NiH_(4) nanoparticles at different states reveal the dehydrogenation behavior and demonstrate the excellent structural and hydrogen storage stabilities during the de/hydrogenated *** research is believed to provide new insights for optimizing the kinetic performance of metal hydrides and novel perspectives for designing highly active and stable hydrogen storage alloys.

关键词： magnesium-based hydride Chemical vapor deposition Nanoparticles Hydrogen storage performance

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

Nanostructured MXene-based materials for boosting hydrogen sorption properties of Mg/MgH_(2)

引用

Materials Reports(Energy) 2024年第1期4卷 58-68页

作者： Yingyan Zhao Bolun Wang Li Ren Yinghui Li Xi Lin Qiuyu Zhang Zhigang Hu Jianxin Zou National Engineering Research Center of Light Alloys Net Forming&State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai200240PR China Shanghai Engineering Research Center of Mg Materials and Applications&School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai200240PR China Shanghai Key Laboratory of Hydrogen Science&Center of Hydrogen Science Shanghai Jiao Tong UniversityShanghai200240PR China

Hydrogen holds the advantages of high energy density,great natural abundance and zero emission,making it suitable for large scale and long term energy storage,while its safe and efficient storage is still *** various solid state hydrogen storage materials,MgH_(2) is promising for industrial applications due to its high gravimetric and volumetric hydrogen densities and the abundance of Mg on ***,the practical application of MgH_(2) has been limited by its stable thermodynamics and slow hydrogen desorption *** is considered as a promising approach for improving the hydrogen storage performance of MgH_(2) and bringing it closer to the requirements of commercial *** is worth mentioning that the recently emerging two-dimensional material,MXene,has showcased exceptional catalytic abilities in modifying the hydrogen storage properties of MgH_(2).Besides,MXene possesses a high surface area,excellent chemical/physical stability,and negatively charged terminating groups,making it an ideal support for the"nanoconfinement"of MgH_(2) or highly active ***,we endeavor to provide a comprehensive overview of recent investigations on MXene-based catalysts and MXene supports for improving the hydrogen sorption properties of Mg/MgH_(2).The mechanisms of hydrogen sorption involved in Mg-MXene based composites are highlighted with special emphases on thermodynamics,kinetics,and catalytic *** aim of this work is to provide a comprehensive and objective review of researches on the development of high-performance catalysts/supports to improve hydrogen storage performances of Mg/MgH_(2) and to identify the opportunities and challenges for future applications.

关键词： magnesium-based hydride MXene Catalytic modification Nano-confinement Hydrogen storage performance

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

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

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

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：