Electrochemically Activated CNT Sheet as a Cathode for Zn-CO<sub>2</sub> Batteries
High demand for electrochemical storage devices is increasing the need for high-performance batteries. A Zn-CO<sub>2</sub> battery offers a promising solution for CO<sub>2</sub> reduction as well as energy storage applications. For this study, a Zn-CO<sub>2</sub>...
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MDPI AG
2022-10-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/23/20/12602 |
| _version_ | 1797472667384676352 |
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| author | Daniel Rui Chen Megha Chitranshi Vesselin Shanov Mark Schulz |
| author_facet | Daniel Rui Chen Megha Chitranshi Vesselin Shanov Mark Schulz |
| author_sort | Daniel Rui Chen |
| collection | DOAJ |
| description | High demand for electrochemical storage devices is increasing the need for high-performance batteries. A Zn-CO<sub>2</sub> battery offers a promising solution for CO<sub>2</sub> reduction as well as energy storage applications. For this study, a Zn-CO<sub>2</sub> battery was fabricated using a Carbon Nanotube (CNT) sheet as a cathode and a Zn plate as an anode. The electrochemical activation technique was used to increase the surface area of the CNT electrode by roughly 4.5 times. Copper (Cu) as a catalyst was then deposited onto the activated CNT electrode using electrodeposition method and different Cu loadings were investigated to optimize CO<sub>2</sub> reduction. The final assembled Zn-CO<sub>2</sub> battery has a 1.6 V output voltage at a current density of 0.063 mA/cm<sup>2</sup>, which is higher than most devices reported in the literature. This study demonstrates the importance of activation process which enabled more catalyst loading on the cathode resulted in additional active sites for electroreduction process. This paper presents the activated CNT sheet as a promising cathode material for Zn-CO<sub>2</sub> batteries. |
| first_indexed | 2024-03-09T20:04:36Z |
| format | Article |
| id | doaj.art-2a034710b6bc421c9558f161e5d04252 |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-09T20:04:36Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
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| series | International Journal of Molecular Sciences |
| spelling | doaj.art-2a034710b6bc421c9558f161e5d042522023-11-24T00:34:04ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-10-0123201260210.3390/ijms232012602Electrochemically Activated CNT Sheet as a Cathode for Zn-CO<sub>2</sub> BatteriesDaniel Rui Chen0Megha Chitranshi1Vesselin Shanov2Mark Schulz3Department of Mechanical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221, USADepartment of Electrical Engineering and Computer Science, University of Cincinnati, Cincinnati, OH 45221, USADepartment of Mechanical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221, USADepartment of Electrical Engineering and Computer Science, University of Cincinnati, Cincinnati, OH 45221, USAHigh demand for electrochemical storage devices is increasing the need for high-performance batteries. A Zn-CO<sub>2</sub> battery offers a promising solution for CO<sub>2</sub> reduction as well as energy storage applications. For this study, a Zn-CO<sub>2</sub> battery was fabricated using a Carbon Nanotube (CNT) sheet as a cathode and a Zn plate as an anode. The electrochemical activation technique was used to increase the surface area of the CNT electrode by roughly 4.5 times. Copper (Cu) as a catalyst was then deposited onto the activated CNT electrode using electrodeposition method and different Cu loadings were investigated to optimize CO<sub>2</sub> reduction. The final assembled Zn-CO<sub>2</sub> battery has a 1.6 V output voltage at a current density of 0.063 mA/cm<sup>2</sup>, which is higher than most devices reported in the literature. This study demonstrates the importance of activation process which enabled more catalyst loading on the cathode resulted in additional active sites for electroreduction process. This paper presents the activated CNT sheet as a promising cathode material for Zn-CO<sub>2</sub> batteries.https://www.mdpi.com/1422-0067/23/20/12602CNT/Cu compositeCO<sub>2</sub> reductionZn-CO<sub>2</sub> battery |
| spellingShingle | Daniel Rui Chen Megha Chitranshi Vesselin Shanov Mark Schulz Electrochemically Activated CNT Sheet as a Cathode for Zn-CO<sub>2</sub> Batteries International Journal of Molecular Sciences CNT/Cu composite CO<sub>2</sub> reduction Zn-CO<sub>2</sub> battery |
| title | Electrochemically Activated CNT Sheet as a Cathode for Zn-CO<sub>2</sub> Batteries |
| title_full | Electrochemically Activated CNT Sheet as a Cathode for Zn-CO<sub>2</sub> Batteries |
| title_fullStr | Electrochemically Activated CNT Sheet as a Cathode for Zn-CO<sub>2</sub> Batteries |
| title_full_unstemmed | Electrochemically Activated CNT Sheet as a Cathode for Zn-CO<sub>2</sub> Batteries |
| title_short | Electrochemically Activated CNT Sheet as a Cathode for Zn-CO<sub>2</sub> Batteries |
| title_sort | electrochemically activated cnt sheet as a cathode for zn co sub 2 sub batteries |
| topic | CNT/Cu composite CO<sub>2</sub> reduction Zn-CO<sub>2</sub> battery |
| url | https://www.mdpi.com/1422-0067/23/20/12602 |
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