检索结果-南通市图书馆

High-loading pt-alloy catalysts for boosted oxygen reduction reaction performance

Chinese Journal of Chemical Engineering 2022年第8期35卷 30-35页

作者： Wei Hong Xinran Shen Jian Wang Xin Feng Wenjing Zhang Jing Li Zidong Wei School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China School of Materials Science and Engineering Chongqing UniversityChongqing 400044China

To improve performance of membrane electrode assembly(MEA)at large current density region,efficient mass transfer at the cathode is desired,for which a feasible strategy is to lower catalyst layer thickness by constructing high loading pt-alloy catalysts on *** the high loading may induce unwanted par-ticle *** this work,H-ptNi/C with 33%(mass)pt loading on carbon and monodisperse distri-bution of 3.55 nm ptNi nanoparticles,was prepared by a bimodal-pore *** electrocatalytic oxygen reduction reaction(ORR),H-ptNi/C displays an activity inferior to the low pt loading catalyst L-ptNi/C(13.3%(mass))in the *** in H_(2)-0_(2) MEA,H-ptNi/C delivers the peak power density of 1.51 W·cm^(-2) and the mass transfer limiting current density of 4.4 A·cm^(-2),being 21%and 16%higher than those of L-ptNi/C(1.25 W·cm^(-2),3.8 A·cm^(-2))respectively,which can be ascribed to enhanced mass trans-fer brought by the thinner catalyst layer in the *** addition,the same method can be used to pre-pare ptFe alloy catalyst with a high-pt loading of 36%(mass).This work may lead to a range of catalyst materials for the large current density applications,such as fuel cell vehicles.

关键词： High pt loading catalyst pt alloy Polymer electrolyte membrane fuel cells Oxygen reduction reaction

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

Rational design and synthesis of one‐dimensional platinum‐based nanostructures for oxygen‐reduction electrocatalysis

引用

Chinese Journal of Catalysis 2022年第6期43卷 1459-1472页

作者： Huiting Niu Chenfeng Xia Lei Huang Shahid Zaman Thandavarayan Maiyalagan Wei Guo Bo You Bao Yu Xia School of Chemistry and Chemical Engineering Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education)Hubei Key Laboratory of Material Chemistry and Service FailureHubei Engineering Research Center for Biomaterials and Medical Protective MaterialsWuhan National Laboratory for OptoelectronicsHuazhong University of Science and Technology(HUST)Wuhan 430074HubeiChina Electrochemical Energy Laboratory Department of ChemistrySRM Institute of Science and TechnologyKattankulathur 603203India

Fuel cells have attracted extensive attention due to their high conversion efficiency and environmental ***,their wider application is limited by the poor activity and high cost of platinum(pt),which is widely used as the cathode catalyst to overcome the slow kinetics associated with oxygen reduction reaction(ORR).pt‐based composites with one‐dimensional(1D)nanoarchitectures demonstrate great advantages towards efficient ORR *** review focuses on the recent advancements in the design and synthesis of 1D pt‐based ORR *** introducing the fundamental ORR mechanism and the advanced 1D architectures,their synthesis strategies(template‐based and template‐free methods)are ***,their morphology and structure optimization are highlighted,followed by the superstructure assembly using 1D pt‐based ***,the challenges and perspectives on the synthesis innovation,structure design,physical characterization,and theoretical investigations are proposed for 1D pt‐based ORR *** anticipate this study will inspire more research endeavors on efficient ORR nanocatalysts in fuel cell application.

关键词： Fuel cells Oxygen reduction reaction Electrocatalyst pt alloy One‐dimensional

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

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

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：