In:
Advanced Functional Materials, Wiley, Vol. 33, No. 32 ( 2023-08)
Abstract:
Molecular catalysts are promising catalysts to electrochemically convert CO 2 into CO with high selectivity. However, achieving industrial‐level current density remains challenging due to the limitation of charge‐ and mass‐transport in gas diffusion electrode. Herein, a novel gas diffusion electrode architecture by confining highly dispersed cobalt(II) phthalocyanine (CoPc) molecules into ‐graphene oxide (GO) nanosheets (denoted as CoPc@GO) is designed. Benefiting from the accelerated CO 2 diffusion and charge transport in the nanoconfined structure, the designed electrode achieves a high CO partial current density of 481.65 ± 12.50 mA cm −2 and a cathode energy efficiency over 64% for CO. The experimentally measured CO 2 transport dynamics and molecular dynamics simulation confirm the accelerated CO 2 diffusion, while theoretical calculations reveal the decreased energy barrier of the CO 2 activation in the confined space. This study paves a new way for electrode architecture design that would accelerate the implementation of CO 2 electrolysis technology.
Type of Medium:
Online Resource
ISSN:
1616-301X
,
1616-3028
DOI:
10.1002/adfm.202301334
Language:
English
Publisher:
Wiley
Publication Date:
2023
detail.hit.zdb_id:
2029061-5
detail.hit.zdb_id:
2039420-2
SSG:
11
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