期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 7, 期 25, 页码 15271-15277出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta03828k
关键词
-
资金
- National Natural Science Foundation of China [21875221, 21571157, U1604123, 21773016]
- Youth Talent Support Program of High-Level Talents Special Support Plan in Henan Province [ZYQR201810148]
- Young Outstanding Teachers of University in Henan Province [2016-130]
- Creative Talents in the Education Department of Henan Province [19HASTIT039]
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology) [2019-KF-13]
Modulating the charge distribution over the carbon skeleton via heteroatom doping is critical for creating active centres for efficient metal-free electrocatalysts. However, effective approaches to precisely control heteroatom co-doping to guide catalytic activities are still lacking. Herein, a P and N-coordinated fullerene-like carbon (N,P-FC) multi-functional catalyst was constructed via a facile soft-template pyrolysis method, which achieves impressive activity for the electrochemical reduction of CO2 to CO (CO2RR, 83.3% faradaic efficiency for CO (FECO), a high current density of similar to 24 mA cm(-2) at -0.8 V), along with high selectivity and long-term stability. The activity of N,P-FC for CO2RR is strongly dependent on the P/N atomic ratio. Also, N,P-FC possesses an impressive oxygen reduction reaction (ORR) performance with a half-wave overpotential (E-1/2) of 0.910 V, 79 mV higher than that of commercial Pt/C, and it outperforms all documented carbon-based electrocatalysts. Combined theoretical calculation studies suggest that the P-coordinated C site is more active for CO2RR, while the N-coordinated neighboring C site is responsible for ORR in this catalyst. This work highlights a new concept for modulating surface charge redistribution by heteroatom co-doping and morphology control toward designing efficient and low-cost electrocatalysts.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据