Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 나종걸 | * |
dc.date.accessioned | 2022-06-02T16:31:15Z | - |
dc.date.available | 2022-06-02T16:31:15Z | - |
dc.date.issued | 2022 | * |
dc.identifier.issn | 2050-7488 | * |
dc.identifier.other | OAK-31397 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/261260 | - |
dc.description.abstract | A zero-gap membrane-electrode assembly (MEA) electrolyzer is a promising design for electrochemical CO2 reduction reactions (eCO2RRs), where gaseous CO2 is directly fed without catholyte. The zero-gap junction between the catalyst and the membrane can have distinct chemical environments and mass transfer properties from the conventional H-type cell but is rarely studied. In this work, we designed an integrated experimental-simulation study in MEA to understand the zero-gap junction and factors to determine the eCO2RR activity to multi-carbon production. We developed a simple synchronous ionomer/catalyst activation step under alkaline conditions to form jagged CuO nanoparticles whose unique morphological evolution facilitates the C2+ chemical production for the zero-gap MEA electrolyzer. Moreover, under gas-fed and high-current density conditions, computational fluid dynamics suggests that the mass transfer limitation of water as a proton source across the catalyst-membrane layer and cathode kinetic overpotential are critical to determining C2+ chemical production in the range of several micrometers. From the chemical-physical understanding, we achieved a high partial current density of 336.5 mA cm−2 and a faradaic efficiency of 67.3% towards C2+ chemicals. © 2022 The Royal Society of Chemistry. | * |
dc.language | English | * |
dc.publisher | Royal Society of Chemistry | * |
dc.title | Microenvironments of Cu catalysts in zero-gap membrane electrode assembly for efficient CO2 electrolysis to C2+ products | * |
dc.type | Article | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.journaltitle | Journal of Materials Chemistry A | * |
dc.identifier.doi | 10.1039/d1ta10939a | * |
dc.identifier.wosid | WOS:000782472600001 | * |
dc.identifier.scopusid | 2-s2.0-85129271162 | * |
dc.author.google | Choi W. | * |
dc.author.google | Choi Y. | * |
dc.author.google | Choi E. | * |
dc.author.google | Yun H. | * |
dc.author.google | Jung W. | * |
dc.author.google | Lee W.H. | * |
dc.author.google | Oh H.-S. | * |
dc.author.google | Won D.H. | * |
dc.author.google | Na J. | * |
dc.author.google | Hwang Y.J. | * |
dc.contributor.scopusid | 나종걸(57226061231) | * |
dc.date.modifydate | 20240603124956 | * |