DOI: 10.1016/j.scib.2019.12.020
论文题名: Anchoring Co3O4 nanoparticles on MXene for efficient electrocatalytic oxygen evolution
作者: Lu Y. ; Fan D. ; Chen Z. ; Xiao W. ; Cao C. ; Yang X.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期: 6 起始页码: 460
结束页码: 466
语种: 英语
中文关键词: Co3O4
; Electrocatalysis
; Heterojunctions
; MXene
; Oxygen evolution reaction
; Water splitting
英文关键词: Cobalt compounds
; Electrocatalysis
; Electrocatalysts
; Energy conversion
; Heterojunctions
; Nanosheets
; Oxygen
; Catalytic performance
; Co3O4
; Controllable synthesis
; Energy conversion systems
; MXene
; Oxygen evolution reaction
; Photoelectrochemical water splitting
; Water splitting
; Titanium compounds
英文摘要: Rational design and controllable synthesis of efficient electrocatalysts for water oxidation is of significant importance for the development of promising energy conversion systems, in particular integrated photoelectrochemical water splitting devices. Cobalt oxide (Co3O4) nanostructures with mixed valences (II,III) have been regarded as promising electrocatalysts for the oxygen evolution reaction (OER). They are able to promote catalytic support of OER but with only modest activity. Here, we demonstrate that the OER performance of cubic Co3O4 electrocatalyst is obviously improved when they are anchored on delaminated two-dimensional (2D) Ti3C2 MXene nanosheets. Upon activation the overpotential of the hybrid catalyst delivers 300 mV at a current density of 10 mA cm−2 in basic solutions, which is remarkably lower than those of Ti3C2 MXene and Co3O4 nanocubes. The strong interfacial electrostatic interactions between two components contribute to the exceptional catalytic performance and stability. The enhanced OER activity and facile synthesis make these Co3O4 nanocubes-decorated ultrathin 2D Ti3C2 MXene nanosheets useful for constructing efficient and stable electrodes for high-performance electrochemical water splitting. © 2019 Science China Press Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169995
Appears in Collections: 气候变化与战略
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作者单位: Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Science, Nanjing Forestry University, Nanjing, 210037, China; Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland; Key Laboratory for Photonic and Electronic Band Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, China
Recommended Citation:
Lu Y.,Fan D.,Chen Z.,et al. Anchoring Co3O4 nanoparticles on MXene for efficient electrocatalytic oxygen evolution[J]. Science Bulletin,2020-01-01,65(6)