期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Efficient oxygen reduction through metal-free 3D covalent organic frameworks:a novel approach
1
作者 Shanyue Wei Xiaowei Wu +4 位作者 shufei zhu Zhiyang Wang Jiangli Wang Can-Zhong Lu Yiming Xie 《Science China Materials》 SCIE EI CAS CSCD 2024年第11期3589-3595,共7页
Covalent organic framework(COF)materials have gained significant applications in electrocatalytic systems due to their structural diversity and tunable functionalities.Moreover,three-dimensional(3D)COFs exhibit multis... Covalent organic framework(COF)materials have gained significant applications in electrocatalytic systems due to their structural diversity and tunable functionalities.Moreover,three-dimensional(3D)COFs exhibit multistage pore structures,exposing numerous open sites,which facilitate the oxygen reduction reaction(ORR)process.However,the advancement of 3D COFs for ORR has been hindered by challenges,including limited topologies,the scarcity of building blocks with the required reactivity and symmetries,and difficulties in determining crystalline structures.In this work,we utilized an 8-connectivity building unit and successfully constructed two isoreticular 3D COF materials,which exhibited exceptionally high catalytic activity for 2e−oxygen reduction reaction without the addition of any metal or conductive support materials,nor the pyrolyzed process.The electrochemically active surface areas(ECSAs)of the two 3D COFs were found to be 17.19 and 12.18 mF/cm2,respectively,which were significantly higher than those reported from other framework materials. 展开更多
关键词 ELECTROCATALYSIS oxygen reduction reaction metalfree covalent organic framework
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部