袁勋

教授

教授 博士生导师 硕士生导师

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所在单位:材料化学教研室

学历:博士研究生

办公地点:四方校区CCE1306

论文成果

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Marrying Fe nanoclusters with 3D carbon nanofiber aerogels: Triggering fast and robust faradic capacitive deionization

发布时间:2024-12-24 点击次数:

关键字:PERFORMANCE; DESALINATION; ELECTRODES
摘要:Faradic-capacitive deionization (FDI) has emerged promising research branch of capacitive deionization (CDI) to address the crisis in freshwater supply due to its high desalination capacity and unique ion storage mechanism over traditional CDI. However, the ion -storage mechanism of FDI imposes notable limitations on its desalination kinetics, while issues such as volumetric expansion (as well as the damage caused to the composite material's structure) contribute to poor cycling stability. Herein, we developed a rational material design of Fe nanoclusterimpregnated CNFAs (Fe NCs@CNFAs) and further used it as chloride-capturing electrode for FDI. This unique nanostructure not only provides fast surface -driven pseudo capacitance but also establishes a flexible scaffold that effectively protects the Fe NCs from severe morphology changes. As a result, our Fe NCs@CNFAs-based FDI exhibited both ultrahigh desalination capacity (120.38 mg g -1 ) and fast desalination rate (0.42 mg g -1 s - 1 ), with robust cycling stability (showing only a 15.25 % decrease in desalination capacity after 100 cycles). This study underscores the significance of the problem -driven approach by leveraging soft scaffold-protected ultrasmall nanocluster to induce fast and durable desalination performance.
卷号:353
期号:
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