热门
Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction
文献类型：期刊论文
| 作者 | Deng, Jiao; Ren, Pengju; Deng, Dehui; Bao, Xinhe |
| 刊名 | angewandte chemie-international edition
 |
| 出版日期 | 2015-02-09 |
| 卷号 | 54期号:7页码:2100-2104 |
| 关键词 | electrocatalysis graphene non-precious metals hydrogen evolution reaction nanoparticles |
| 通讯作者 | 任鹏举 ; 包信和 |
| 英文摘要 | major challenges encountered when trying to replace precious-metal-based electrocatalysts of the hydrogen evolution reaction (her) in acidic media are related to the low efficiency and stability of non-precious-metal compounds. therefore, new concepts and strategies have to be devised to develop electrocatalysts that are based on earth-abundant materials. herein, we report a hierarchical architecture that consists of ultrathin graphene shells (only 1-3 layers) that encapsulate a uniform coni nanoalloy to enhance its her performance in acidic media. the optimized catalyst exhibits high stability and activity with an onset overpotential of almost zero versus the reversible hydrogen electrode (rhe) and an overpotential of only 142 mv at 10 macm(-2), which is quite close to that of commercial 40% pt/c catalysts. density functional theory (dft) calculations indicate that the ultrathin graphene shells strongly promote electron penetration from the coni nanoalloy to the graphene surface. with nitrogen dopants, they synergistically increase the electron density on the graphene surface, which results in superior her activity on the graphene shells. |
| WOS标题词 | science & technology ; physical sciences |
| 学科主题 | 物理化学 |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | active edge sites ; carbon nanotubes ; oxygen reduction ; phosphide nanoparticles ; asterisk-asterisk ; water ; electrocatalysis ; molybdenum ; oxidation ; iron |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000349391000013 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/143744]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng, Jiao,Ren, Pengju,Deng, Dehui,et al. Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction[J]. angewandte chemie-international edition,2015,54(7):2100-2104. |
| APA | Deng, Jiao,Ren, Pengju,Deng, Dehui,&Bao, Xinhe.(2015).Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction.angewandte chemie-international edition,54(7),2100-2104. |
| MLA | Deng, Jiao,et al."Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction".angewandte chemie-international edition 54.7(2015):2100-2104. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。