检索结果-南通市图书馆

single-atom Fe Embedded Co_(3)s_(4) for Efficient Electrocatalytic Oxygen Evolution Reaction

Chemical Research in Chinese Universities 2022年第5期38卷 1282-1286页

作者： QI Yuxue LI Tingting HU Yajie XIANG Jiahong sHAO Wenqian CHEN Wenhua MU Xueqin LIU suli CHEN Changyun YU Min MU shichun Key Laboratory of Advanced Functional Materials of Nanjing Nanjing Xiaozhuang UniversityNanjing 211171P.R.China Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037P.R.China state Key Laboratory of Advanced Technology for Materials synthesis and Processing Wuhan University of TechnologyWuhan 430070P.R.China

Constructing atomically dispersed active sites with densely exposed and dispersed double metal-sx catalytic sites for favorable OER catalytic activity remains rare and ***,we design and construct a Fe_(1)s_(x)@Co_(3)s_(4) electrocatalyst with Fe single atoms epitaxially confined in Co_(3)s_(4) nanosheets for catalyzing the sluggish alkaline oxygen evolution reaction(OER).Consequently,in ultralow concentration alkaline solutions(0.1 mol/L KOH),such a catalyst is highly active and robust for OER with low overpotentials of 300 and 333 mV at current densities of 10 and 30 mA/cm^(2),respectively,accompanying long-term stability without significant degradation even for 350 *** addition,Fe_(1)s_(x)@Co_(3)s_(4) shows a turnover frequency(TOF)value of 0.18 s−1,nearly three times that of Co_(3)s_(4)(0.07 s−1),suggesting the higher atomic utilization of Fe single atoms.Mössbauer and in-situ Raman spectra confirm that the OER activity of Fe_(1)s_(x)@Co_(3)s_(4) origins from a thin catalytic layer of Co(Fe)OOH that interacts with trace-level Fe species in the electrolyte,creating dynamically stable active *** with experimental characterizations,it suggests that the most active s-coordinated dual-metal site configurations are 2s-bridged(Fe-Co)s4,in which Co-s and Fe-s moieties are shared with two s atoms,which can strongly regulate the adsorption energy of reaction intermediates,accelerating the OER reaction kinetics.

关键词： Electrocatalyst Dual-metal site s coordination Fe single atom Oxygen evolution reaction

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

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

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：