Defect-enabled local high-temperature field within carbon to promote in-plane integration of an electrocatalyst for CO2-to-CO conversion

IF 32.4 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Energy & Environmental Science Pub Date : 2024-12-19 DOI:10.1039/d4ee04511d
Yafang Zhang, Chang Yu, Xuedan Song, Xinyi Tan, Wenbin Li, Shuo Liu, Xiuqing Zhu, Song Cui, Yuanyang Xie, Jieshan Qiu
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Abstract

The efficient coupling of metal-containing complexes with carbon supports is a preferred method to maximize their intrinsic electrocatalytic activity. Herein, a defect-enabled local high-temperature field was precisely induced via microwave irradiation, allowing the in-plane integration of metal-containing complexes and carbon supports. In particular, under an energetic microwave input, N,N-dimethylformamide was ingeniously used to preset defect placeholders via the adsorption/anchoring of nitrogen species. Next, the created defects triggered concentrated electromagnetic wave attenuation, which further converted into Joule heating. Finally, these local high-temperature fields favored the spatial interlocking and topological conversion of Fe-macrocycles, as confirmed by multiscale spectroscopy, finite element analysis, and density functional theory. The compact in-plane microstructure endowed this electrocatalyst with a superior high turnover frequency of 241 000 h−1 for CO2-to-CO conversion. Moreover, the reaction could be operated in a scaled-up membrane electrode assembly with an effective electrode area of 5 × 5 cm2 at a total current density of 200 mA cm−2. This work provides a novel path for the precise fabrication of well-defined materials with excellent electrocatalytic activity.

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通过碳内缺陷产生局部高温场,促进 CO2 到 CO 转换电催化剂的面内整合
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来源期刊
Energy & Environmental Science
Energy & Environmental Science 化学-工程:化工
CiteScore
50.50
自引率
2.20%
发文量
349
审稿时长
2.2 months
期刊介绍: Energy & Environmental Science, a peer-reviewed scientific journal, publishes original research and review articles covering interdisciplinary topics in the (bio)chemical and (bio)physical sciences, as well as chemical engineering disciplines. Published monthly by the Royal Society of Chemistry (RSC), a not-for-profit publisher, Energy & Environmental Science is recognized as a leading journal. It boasts an impressive impact factor of 8.500 as of 2009, ranking 8th among 140 journals in the category "Chemistry, Multidisciplinary," second among 71 journals in "Energy & Fuels," second among 128 journals in "Engineering, Chemical," and first among 181 scientific journals in "Environmental Sciences." Energy & Environmental Science publishes various types of articles, including Research Papers (original scientific work), Review Articles, Perspectives, and Minireviews (feature review-type articles of broad interest), Communications (original scientific work of an urgent nature), Opinions (personal, often speculative viewpoints or hypotheses on current topics), and Analysis Articles (in-depth examination of energy-related issues).
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