首页|MOF-derived 1D CGO Cathode for Efficient Solid Oxide Electrolysis Cells

MOF-derived 1D CGO Cathode for Efficient Solid Oxide Electrolysis Cells

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Solid oxide electrolysis cells(SOECs)provide a promising way for converting renewable energy into chemical fuels.Traditionally,NiO/CGO(nickel-gadolinium doped ceria)cermet has shown its excellent properties in ionic and electronic conductivity under reducing conditions.Herein,we developed a novel 1D NiO/CGO cathode through a cerium metal-organic framework(MOF)derived process.The cathode's 1D nanostructure integrated with a microchannel scaffold facilitates enhanced mass transport,providing vertically aligned pathways for CO2 and H2O diffusion.Additionally,the 1D framework increases the number of interfacial sites and reduces ion diffusion distances,thereby simplifying electron/ion transport.Consequently,this advanced cathode achieved a significant breakthrough in SOEC performance,maintaining efficient CO2 and H2O electrolysis at an extraordinary current density of 1.41 A/cm2 at 1.5 V and excellent stability over 24 h at 850 ℃.The enhanced performance of this newly developed cathode not only achieves a remarkable 100％improvement compared to those of NiO/CGO cathodes with varying geometrical configurations but also surpasses those of commercial NiO/CGO catalysts by an outstanding 40％when tested under identical conditions.The development of the 1D NiO/CGO enhances the efficiency and durability of ceramic cathodes for CO2 and H2O co-electrolysis in SOECs and improves the scalability and effectiveness of SOECs in renewable energy applications.

Cerium metal-organic frameworkOne-dimensional structureGadolinium doped ceriaCO2 activationco-Electrolysis

TIAN Jiayu、SUN Qi、LIU Pei、DAI Jiuyi、CAI Yezheng、XU Miao、YE Tian-Nan、CHEN Jie-Sheng

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Frontiers Science Center for Transformative Molecules,School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,P.R.China

Zhangjiang Institute for Advanced Study,Shanghai Jiao Tong University,Shanghai 200240,P.R.China

Shanghai Institute of Space Power-sources,State Key Laboratory of Space Power-sources,Shanghai 200245,P.R.China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key R&D Program of ChinaShanghai Municipal Science and Technology Major Project of ChinaOpen Foundation Commission of Shaoxing Research Institute of Renewable Energy and Molecular Engineering,ChinaProject of Jiangxi Academy of Sciences,China

222751212193100522105122522722652023YFA1506300JDSX20220382023YSTZX01

2024

10.1007/s40242-024-4126-1

高等学校化学研究(英文版)
吉林大学

高等学校化学研究(英文版)

CSTPCD
影响因子：0.871
ISSN：1005-9040
年,卷(期)：2024.40(4)