The Effect of Molten Salt Composition on Carbon Structure: Preparation of High Value-Added Nano-Carbon Materials by Electrolysis of Carbon Dioxide
The electrochemical conversion of CO<sub>2</sub> into high value-added carbon materials by molten salt electrolysis offers a promising solution for reducing carbon dioxide emissions. This study focuses on investigating the influence of molten salt composition on the structure of CO<su...
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2024-12-01
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| author | Yi Cheng Liangxing Li Lirong Xue Jiahang Wu Jingsong Wang Xilin Huang Chunfa Liao |
| author_facet | Yi Cheng Liangxing Li Lirong Xue Jiahang Wu Jingsong Wang Xilin Huang Chunfa Liao |
| author_sort | Yi Cheng |
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| description | The electrochemical conversion of CO<sub>2</sub> into high value-added carbon materials by molten salt electrolysis offers a promising solution for reducing carbon dioxide emissions. This study focuses on investigating the influence of molten salt composition on the structure of CO<sub>2</sub> direct electroreduction carbon products in chloride molten salt systems. Using CaO as a CO<sub>2</sub> absorber, the adsorption principle of CO<sub>2</sub> in LiCl-CaCl<sub>2</sub>, LiCl-CaCl<sub>2</sub>-NaCl and LiCl-CaCl<sub>2</sub>-KCl molten salts was discussed, and the reasons for the different morphologies and structures of carbon products were analyzed, and it was found that the electrolytic efficiency of the whole process exceeded 85%. Furthermore, cathode products are analyzed through Scanning Electron Microscope (SEM), X-Ray Diffractometer (XRD), Thermal Gravimetric Analyzer (TGA), Raman Spectra and Fourier Transform Infrared (FTIR) techniques with a focus on the content and morphology of carbon elements. It was observed that the carbon content in the carbon powder produced by molten salt electrochemical method exceeded 99%, with most carbon products obtained from electrolysis in the Li-Ca chloride molten salt system being in the form of carbon nanotubes. In contrast, the Li-Ca-K chloride system yielded carbon nanospheres, while a mixture was found in the Li-Ca-Na chloride system. Therefore, experimental results demonstrate that altering the composition of the system allows for obtaining the desired product size and morphology. This research presents a pathway to convert atmospheric CO<sub>2</sub> into high value-added carbon products. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2024-12-01 |
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| series | Nanomaterials |
| spelling | doaj-art-a19d324246c84ebcbf34a2fc5ea04d912025-01-10T13:19:22ZengMDPI AGNanomaterials2079-49912024-12-011515310.3390/nano15010053The Effect of Molten Salt Composition on Carbon Structure: Preparation of High Value-Added Nano-Carbon Materials by Electrolysis of Carbon DioxideYi Cheng0Liangxing Li1Lirong Xue2Jiahang Wu3Jingsong Wang4Xilin Huang5Chunfa Liao6School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, ChinaSchool of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, ChinaSchool of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, ChinaSchool of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, ChinaSchool of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, ChinaSchool of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, ChinaInstitute of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaThe electrochemical conversion of CO<sub>2</sub> into high value-added carbon materials by molten salt electrolysis offers a promising solution for reducing carbon dioxide emissions. This study focuses on investigating the influence of molten salt composition on the structure of CO<sub>2</sub> direct electroreduction carbon products in chloride molten salt systems. Using CaO as a CO<sub>2</sub> absorber, the adsorption principle of CO<sub>2</sub> in LiCl-CaCl<sub>2</sub>, LiCl-CaCl<sub>2</sub>-NaCl and LiCl-CaCl<sub>2</sub>-KCl molten salts was discussed, and the reasons for the different morphologies and structures of carbon products were analyzed, and it was found that the electrolytic efficiency of the whole process exceeded 85%. Furthermore, cathode products are analyzed through Scanning Electron Microscope (SEM), X-Ray Diffractometer (XRD), Thermal Gravimetric Analyzer (TGA), Raman Spectra and Fourier Transform Infrared (FTIR) techniques with a focus on the content and morphology of carbon elements. It was observed that the carbon content in the carbon powder produced by molten salt electrochemical method exceeded 99%, with most carbon products obtained from electrolysis in the Li-Ca chloride molten salt system being in the form of carbon nanotubes. In contrast, the Li-Ca-K chloride system yielded carbon nanospheres, while a mixture was found in the Li-Ca-Na chloride system. Therefore, experimental results demonstrate that altering the composition of the system allows for obtaining the desired product size and morphology. This research presents a pathway to convert atmospheric CO<sub>2</sub> into high value-added carbon products.https://www.mdpi.com/2079-4991/15/1/53carbon dioxidemolten salt electrolysiscarbon materialschloride molten salt |
| spellingShingle | Yi Cheng Liangxing Li Lirong Xue Jiahang Wu Jingsong Wang Xilin Huang Chunfa Liao The Effect of Molten Salt Composition on Carbon Structure: Preparation of High Value-Added Nano-Carbon Materials by Electrolysis of Carbon Dioxide Nanomaterials carbon dioxide molten salt electrolysis carbon materials chloride molten salt |
| title | The Effect of Molten Salt Composition on Carbon Structure: Preparation of High Value-Added Nano-Carbon Materials by Electrolysis of Carbon Dioxide |
| title_full | The Effect of Molten Salt Composition on Carbon Structure: Preparation of High Value-Added Nano-Carbon Materials by Electrolysis of Carbon Dioxide |
| title_fullStr | The Effect of Molten Salt Composition on Carbon Structure: Preparation of High Value-Added Nano-Carbon Materials by Electrolysis of Carbon Dioxide |
| title_full_unstemmed | The Effect of Molten Salt Composition on Carbon Structure: Preparation of High Value-Added Nano-Carbon Materials by Electrolysis of Carbon Dioxide |
| title_short | The Effect of Molten Salt Composition on Carbon Structure: Preparation of High Value-Added Nano-Carbon Materials by Electrolysis of Carbon Dioxide |
| title_sort | effect of molten salt composition on carbon structure preparation of high value added nano carbon materials by electrolysis of carbon dioxide |
| topic | carbon dioxide molten salt electrolysis carbon materials chloride molten salt |
| url | https://www.mdpi.com/2079-4991/15/1/53 |
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