NDLI: Remarkable O<sub>2</sub> permeation through a mixed conducting carbon capture membrane functionalized by atomic layer deposition

Content Provider	Royal Society of Chemistry (RSC)
Author	Lei, Xueling Fang, Jie Tong, Jingjing Han, Minfang Huang, Kevin
Copyright Year	2016
Abstract	The development of energy-efficient and cost-competitive carbon capture technology is of vital importance to effective reduction of carbon emissions and mitigation of global climate change. The present work reports that a highly energy-efficient electrochemical carbon capture membrane consisting of a carbonate and silver phase exhibits a remarkably high rate of O2 permeation after the silver phase is functionalized with a nanoscale layer of Al2O3 by atomic layer deposition. The resulting permeation flux ratio of O2 to CO2 was 1.5 : 1, a complete reversal from 1 : 2 of the conventional membrane. The mechanisms of this exceptionally high rate of O2 permeation were investigated by in situ Raman spectroscopy and theoretical DFT calculations. The results revealed that LiCO4− as the active surface species was responsible for the enhanced O2 permeation. A new CO2/O2 transport model based on a “cogwheel” migration mechanism of CO42− was presented to explain the experimental results with excellent agreement.
Starting Page	1828
Ending Page	1837
Page Count	10
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	4
Issue Number	5
Journal	Journal of Materials Chemistry A
DOI	10.1039/c5ta10105k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Carbon capture and storage Carbon Climate change Electrochemistry Oxygen Atomic layer deposition Raman spectroscopy
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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