Preparation of Amine-Functionalized 3D Body-Centered Cubic Carbon by Soft Template Method for Cathode Material of Lithium Sulfur Batteries
碩士 === 國立高雄大學 === 應用化學系碩士班 === 106 === In this work, we successfully synthesized the highly ordered mesoporous 3D body-centered cubic carbon (C-FDU-16) via soft template method, using the triblock copolymer F127 as the structure-directing agent and resol as the carbon source. Furthermore, w...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2018
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| Online Access: | http://ndltd.ncl.edu.tw/handle/d3ht6f |
| Summary: | 碩士 === 國立高雄大學 === 應用化學系碩士班 === 106 === In this work, we successfully synthesized the highly ordered mesoporous 3D body-centered cubic carbon (C-FDU-16) via soft template method, using the triblock copolymer F127 as the structure-directing agent and resol as the carbon source.
Furthermore, we adopted wet-impregnation method to prepared amine-functionalized 3D body-centered cubic carbon by impregnating highly ordered mesoporous 3D body-centered cubic carbon with polyethleneimine and utilize it for lithium-sulfur battery cathode material.
We characterize amine-functionalized 3D body-centered cubic carbon by transmission electron microscopy (TEM) and surface area and porosimetry analyzer (BET) that it possess large surface area and periodic mesoporous structure advantaged properties.
Electrochemical tests reveal that the amine-functionalized FDU-16/S with well-defined nanostructure delivers a high initial specific capacity up to 1267 mAh/g and a stable capacity of 1104 mAh/g after 20 cycles at 0.1 C. In addition, the amine-functionalized FDU-16/S exhibits high reversible capacity at high rates. The excellent electrochemical performance is attributed to specific and strong interaction between sulfur species and amine groups in PEI. In summary, we believe amine-functionalized 3D body-centered cubic carbon is a suitable and potential material for cathode material of lithium sulfur batteries.
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