Triple-conducting heterostructure anodes for electrochemical ethane nonoxidative dehydrogenation by protonic ceramic electrolysis cells

IF 9.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chinese Chemical Letters Pub Date : 2024-10-19 DOI:10.1016/j.cclet.2024.110567

Yixin Lu, Minghan Qin, Shixian Zhang, Zhen Liu, Wang Sun, Zhenhua Wang, Jinshuo Qiao, Kening Sun

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Abstract

In response to the increasing demand of ethylene, electrochemical ethane nonoxidative dehydrogenation (EENDH) to ethylene by protonic ceramic electrolysis cells (PCECs) is developed. However, existing anode materials exhibit poor proton conductivity and limited catalytic activity. Herein, a novel Sr_1.95Fe_1.4Co_0.1Mo_0.4Zr_0.1O_6-_δ (SFCMZ) anode is prepared as PCECs anode for EENDH. Zr doping increases the oxygen vacancies and enhances the proton conductivity of SFCMZ. Moreover, an alloy-oxide heterostructure (CoFe@SFCMZ) is formed through in-situ exsolution of CoFe alloy nanoparticles under reduction conditions, generating abundant oxygen vacancies and improving its catalytic activity. CoFe@SFCMZ cell achieves an electrolysis current density of 0.87 A/cm² at 700 °C under 1.6 V, with an ethane conversion rate of 34.22% and corresponding ethylene selectivity of 93.4%. These results demonstrate that CoFe@SFCMZ anode exhibits excellent electrocatalytic activity, suggesting promising applications for EENDH.

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来源期刊

Chinese Chemical Letters 化学-化学综合

CiteScore

14.10

自引率

15.40%

发文量

8969

审稿时长

1.6 months

期刊介绍： Chinese Chemical Letters (CCL) (ISSN 1001-8417) was founded in July 1990. The journal publishes preliminary accounts in the whole field of chemistry, including inorganic chemistry, organic chemistry, analytical chemistry, physical chemistry, polymer chemistry, applied chemistry, etc.Chinese Chemical Letters does not accept articles previously published or scheduled to be published. To verify originality, your article may be checked by the originality detection service CrossCheck.