대표연구 논문 실적
Cu Nanoparticle Infiltration via Metal−Organic Decomposition Ink for Superior Mass Activity in CO Electroreduction
발행년도
20251003
저자
Juhyung Choi, Sejin Park, Dayeon Kim, Hyun Chul Kim, Hyewon Yun, Yewon Hong, Hyun Ji An, Taemin Lee, Noho Lee, Jaeeun Kim, Dae-Hyun Nam, Hyung-Suk Oh, Yun Jeong Hwang
저널
NANO LETTERS
작성자
전지현
작성일
2025-10-20
조회
15
ABSTRACT
Achieving stable operation at high currents remains challenging for gas diffusion electrode (GDE)-based CO electrolyzers. Herein, we demonstrate the importance of Cu nanoparticle infiltration into the microporous layer to enrich local CO accessibility and mitigate electrolyte crossover. A facile GDE preparation method is developed via the doctor-blading method using a Cu metal–organic decomposition (Cu MOD) ink to produce well-dispersed nanoparticles across the porous layer. This design produces highly selective C2+ products at –1200 mA cm–2 from the CO electroreduction reaction, achieving a remarkably high mass activity of approximately –28,000 A g–1. It is found that the Cu electrodes prepared by MOD improve a stable balanced gas–liquid–solid interface by CO transport across the hydrophobic microenvironment of the inherent microporous layer. Our insights offer perspectives on a scalable strategy for optimizing catalyst positioning and advancing stable GDEs with high mass activity.
https://doi.org/10.1021/acs.nanolett.5c04051
Achieving stable operation at high currents remains challenging for gas diffusion electrode (GDE)-based CO electrolyzers. Herein, we demonstrate the importance of Cu nanoparticle infiltration into the microporous layer to enrich local CO accessibility and mitigate electrolyte crossover. A facile GDE preparation method is developed via the doctor-blading method using a Cu metal–organic decomposition (Cu MOD) ink to produce well-dispersed nanoparticles across the porous layer. This design produces highly selective C2+ products at –1200 mA cm–2 from the CO electroreduction reaction, achieving a remarkably high mass activity of approximately –28,000 A g–1. It is found that the Cu electrodes prepared by MOD improve a stable balanced gas–liquid–solid interface by CO transport across the hydrophobic microenvironment of the inherent microporous layer. Our insights offer perspectives on a scalable strategy for optimizing catalyst positioning and advancing stable GDEs with high mass activity.
https://doi.org/10.1021/acs.nanolett.5c04051
