检索结果-南通市图书馆

Origin of Excellent Charge Storage Properties of Defective Tin Disulphide in Magnesium/Lithium-Ion Hybrid Batteries

Nano-Micro Letters 2022年第11期14卷 87-106页

作者： Xin Fan Mike Tebyetekerwa Yilan Wu rohit ranganathan gaddam Xiu Song Zhao School of Chemical Engineering The University of QueenslandSt LuciaBrisbaneQLD 4072Australia School of Material Science and Technology North University of ChinaTaiyuan 030051ShanxiPeople’s Republic of China Dow Centre for Sustainable Engineering Innovation School of Chemical EngineeringThe University of QueenslandSt LuciaBrisbaneQLD 4072Australia Department of Chemical Engineering Indian Institute of Science Education and ResearchBhopalIndia

Lithium-ion batteries(LIBs)are excellent electrochemical energy sources,albeit with existing challenges,including high costs and safety ***-ion batteries(MIBs)are one of the potential ***,the performance of MIBs is poor due to their sluggish solid-state Mg^(2+) diffusion kinetics and severe electrode *** magnesium-ion/lithium-ion(Mg^(2+)/Li^(+))hybrid batteries(MLHBs)with Mg^(2+) and Li+as the charge carriers create a synergy between LIBs and MIBs with significantly improved charge transport kinetics and reliable safety ***,MLHBs are yet to reach a reasonable electrochemical performance as *** work reports a composite electrode material with highly defective two-dimensional(2D)tin sulphide nanosheets(SnS_(x))encapsulated in three-dimensional(3D)holey graphene foams(HGF)(SnS_(x)/HGF),which exhibits a specific capacity as high as 600 mAh g^(−1) at 50 mA g^(−1) and a compelling specific energy density of~330 Wh kg^(−1).The excellent electrochemical performance surpasses previously reported hybrid battery systems based on intercalation-type cathode materials under comparable *** role played by the defects in the SnS_(x)/HGF composite is studied to understand the origin of the observed excellent electrochemical *** is found that it is closely related to the defect structure in SnS_(x),which offers percolation pathways for efficient ion transport and increased internal surface area assessable to the charge *** defective sites also absorb structural stress caused by Mg^(2+) and Li+*** work is an important step towards realizing high-capacity cathode materials with fast charge transport kinetics for hybrid batteries.

关键词： Defects Tin disulphide Magnesium/lithium-ion hybrid batteries 2D materials

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

Magnesium/Lithium Hybrid Batteries Based on SnS_(2)-MoS_(2) with Reversible Conversion Reactions

引用

Energy Material Advances 2022年第1期2022卷 118-131页

作者： Xin Fan Mike Tebyetekerwa Yilan Wu rohit ranganathan gaddam Xiu Song Zhao School of Chemical Engineering The University of QueenslandSt.LuciaBrisbane 4072Australia School of Material Science and Technology North University of ChinaShanxiTaiyuan 030051China Dow Centre for Sustainable Engineering Innovation School of Chemical EngineeringThe University of QueenslandSt.LuciaBrisbane QLD 4072Australia Department of Chemical Engineering Indian Institute of Science Education and ResearchBhopalIndia

The magnesium/lithium hybrid batteries(MLHBs)featuring dendrite-less deposition with Mg anode and Li-storage cathode are a promising alternative to Li-ion batteries for large-scale energy ***,their limited energy density limits their practical *** improve this,beyond the commonly proposed intercalation compounds,high-capacity conversion-type cathodes based on heterostructures of tin sulphide-molybdenum disulphide(SnS_(2)-MoS_(2))are proposed in this *** SnS_(2) is already a promising high-capacity electrode material for multivalent batteries and undergoes conversion reactions during the ion storage *** introduction of S-deficient MoS_(2) enhances the reversibility of SnS_(2) in the conversion reaction via strong polysulfide anchoring and catalytic *** results show that the SnS_(2)-MoS_(2) electrode achieves a high charge capacity of~600 mAhg^(-1) at 50mAg^(-1) and an excellent rate capability of 240mAhg^(-1) at 1000mAhg^(-1) with a negligible capacity fading rate of 0.063%per cycle across 1000 *** results highlight a new direction toward designing 2D heterostructures as high-capacity cathodes beyond intercalation-type cathodes for multivalent-ion batteries.

关键词： electrode Reversible magnesium

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

Stabilising Cobalt Sulphide Nanocapsules with Nitrogen-Doped Carbon for High-Performance Sodium-Ion Storage

引用

Nano-Micro Letters 2020年第4期12卷 29-40页

作者： Yilan Wu rohit Rgaddam Chao Zhang Hao Lu Chao Wang Dmitri Golberg Xiu Song Zhao School of Chemical Engineering The University of QueenslandSt LuciaBrisbaneQLD 4072Australia School of Chemistry Physics and Mechanical EngineeringScience and Engineering FacultyQueensland University of TechnologyBrisbaneQLD 4001Australia Institute of Materials for Energy and Environment College of Materials Science and EngineeringQingdao University308 Ningxia RoadQingdao 266071People’s Republic of China

Conversion-type anode materials with a high charge storage capability generally su er from large volume expansion, poor electron conductivity, and sluggish metal ion transport kinetics. The electrode material described in this paper, namely cobalt sulphide nanoparticles encapsulated in carbon cages(Co9S8@NC), can circumvent these problems. This electrode material exhibited a reversible sodium-ion storage capacity of 705 mAh g^-1 at 100 mA g^-1 with an extraordinary rate capability and good cycling stability. Mechanistic study using the in situ transmission electron microscope technique revealed that the volumetric expansion of the Co9S8 nanoparticles is bu ered by the carbon cages, enabling a stable electrode–electrolyte interface. In addition, the carbon shell with high-content doped nitrogen significantly enhances the electron conductivity of the Co9S8@NC electrode material and provides doping-induced active sites to accommodate sodium ions. By integrating the Co9S8@NC as negative electrode with a cellulose-derived porous hard carbon/graphene oxide composite as positive electrode and 1 M NaPF6 in diglyme as the electrolyte, the sodium-ion capacitor full cell can achieve energy densities of 101.4 and 45.8 Wh kg^-1 at power densities of 200 and 10,000 W kg^-1, respectively.

关键词： Cobalt sulphide Nitrogen-doped carbon Core–shell structure Sodium-ion capacitors

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

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：