.png){kind=icon}
返回
Atomically Defined Undercoordinated Active Sites for Highly Efficient CO2 Electroreduction
.png){kind=icon}
PRE
AI
DOI：10.1002/adfm.201907658.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Electrocatalytic reduction of carbon dioxide (CO2ER) in rechargeable Zn-CO2 battery still remains a great challenge. Herein, a highly efficient CO2ER electrocatalyst composed of coordinatively unsaturated single-atom copper coordinated with nitrogen sites anchored into graphene matrix (Cu-N-2/GN) is reported. Benefitting from the unsaturated coordination environment and atomic dispersion, the ultrathin Cu-N-2/GN nanosheets exhibit a high CO2ER activity and selectivity for CO production with an onset potential of -0.33 V and the maximum Faradaic efficiency of 81% at a low potential of -0.50 V, superior to the previously reported atomically dispersed Cu-N anchored on carbon materials. Experimental results manifest the highly exposed and atomically dispersed Cu-N-2 active sites in graphene framework where the Cu species are coordinated by two N atoms. Theoretical calculations demonstrate that the optimized reaction free energy for Cu-N-2 sites to capture CO2 promote the adsorption of CO2 molecules on Cu-N-2 sites; meanwhile, the short bond lengths of Cu-N-2 sites accelerate the electron transfer from Cu-N-2 sites to *CO2, thus efficiently boosting the *COOH generation and CO2ER performance. A designed rechargeable Zn-CO2 battery with Cu-N-2/GN nanosheets deliver a peak power density of 0.6 mW cm(-2), and the charge process of battery can be driven by natural solar energy.
Keyword:
active sites
atomic dispersion Cu-N-2
CO2 electroreduction
unsaturated coordination
Zn-CO2 battery
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
19
论文数:
3.5W
被引数:
32.1W
机构
引用论文
Electrochemical Reduction of CO2 Using Copper Single-Crystal Surfaces: Effects of CO* Coverage on the Selective Formation of Ethylene使用铜单晶表面电化学还原CO2: CO * 覆盖率对乙烯选择性形成的影响.png)
ACS CATALYSIS
ACS CATALYSISIF13.1
PREAI
分享收藏Occupancy-driven energy management for smart building automation智能楼宇自动化的占用驱动能源管理Proceedings of the 2nd ACM Workshop on Embedded Sensing Systems for Energy-Efficiency in Building
Proceedings of the 2nd ACM Workshop on Embedded Sensing Systems for Energy-Efficiency in BuildingIF0
PREAI
分享收藏A single iron site confined in a graphene matrix for the catalytic oxidation of benzene at room temperature限制在石墨烯基质中的单个铁位点，用于室温下苯的催化氧化SCIENCE ADVANCES
OAAI
SCIENCE ADVANCESIF12.5
OAAI分享收藏分享收藏Understanding activity and selectivity of metal-nitrogen-doped carbon catalysts for electrochemical reduction of CO2了解金属氮掺杂碳催化剂对CO2电化学还原的活性和选择性NATURE COMMUNICATIONSOAAI
NATURE COMMUNICATIONSIF15.7
OAAI分享收藏Ionic Exchange of Metal Organic Frameworks to Access Single Nickel Sites for Efficient Electroreduction of CO2金属有机骨架的离子交换以访问单个镍位点以有效地还原CO2
PREAI
分享收藏Covalent organic frameworks comprising cobalt porphyrins for catalytic CO
2
reduction in water用于催化CO的包含钴卟啉的共价有机框架
2
减少水ScienceOAAI
ScienceIF0
OAAI分享收藏Covalent triazine framework modified with coordinatively-unsaturated Co or Ni atoms for CO2 electrochemical reduction用配位不饱和的Co或Ni原子修饰的共价三嗪骨架，用于CO2电化学还原CHEMICAL SCIENCEOAAI
CHEMICAL SCIENCEIF7.4
OAAI分享收藏
查看更多内容