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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 藍崇文(Chung-Wen Lan) | |
| dc.contributor.author | Hao-Ting Yu | en |
| dc.contributor.author | 余皓庭 | zh_TW |
| dc.date.accessioned | 2022-11-24T03:08:51Z | - |
| dc.date.available | 2021-11-04 | |
| dc.date.available | 2022-11-24T03:08:51Z | - |
| dc.date.copyright | 2021-11-04 | |
| dc.date.issued | 2021 | |
| dc.date.submitted | 2021-10-28 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/80538 | - |
| dc.description.abstract | 氧化矽作為新一代的負極材料，可滿足傳統石墨材料所無法達成的電動交通工具與大型儲能設備對電池的高能量密度需求，工業上氧化矽需經過加工磨碎至微米等級以下才可進一步進行鍍碳等程序來作為負極材料使用，磨碎的過程易受汙染且耗費能源。有一種方法是以聚二甲基矽氧烷(PDMS)作為原料於密閉容器內進行高溫熱處理，PDMS在密閉容器內升溫裂解所產生的高壓可使轉化的SiOC材料以球形的結構生成，可直接製備出數微米大小的球形SiOC材料無須額外加工。 在本論文中將該實驗的規模從5 ml反應器放大至300 ml的高壓釜，大幅提升產量，並且透過添加催化劑NiCl2將其反應溫度從文獻的800度降低至650度，降低高壓釜材料的耐溫需求使其可用一般的不鏽鋼材，並且觀察反應過程中溫壓變化，確認了催化劑加速了前驅物在升溫過程中的裂解，於持溫4小時達到最高壓力170 kg/cm2。40 g純PDMS在催化劑20% NiCl2以10⁰C/min升溫至650⁰C持溫4小時後可得到平均6.63 um分散性佳的球形SiOC產物；產率66.1%，產物經1100⁰C 6小時燒結後的SiOx/C材料首圈放電電容為1529 mAh/g，首圈庫倫效率64.5%，無須研磨加工可直接作為負極材料使用。 | zh_TW |
| dc.description.provenance | Made available in DSpace on 2022-11-24T03:08:51Z (GMT). No. of bitstreams: 1 U0001-2610202112014900.pdf: 4941090 bytes, checksum: 7e7b25195c6c1722c65af2a11ec2d32f (MD5) Previous issue date: 2021 | en |
| dc.description.tableofcontents | 致謝 I 中文摘要 II Abstract III 目錄 IV 圖目錄 VI 表目錄 X 第一章 緒論 1 1-1 研究背景 1 1-2 研究動機 2 第二章 文獻回顧 3 2-1 矽烷合成SiOC鋰電池負極材料 3 2-2高溫壓條件氣相合成球形SiOC材料 4 2-3 PDMS氣相合成球形SiOC材料機制 9 第三章 實驗方法及實驗器材 11 3-1實驗藥品 11 3-2實驗設備與器材 13 3-2-1球形SiOC材料合成設備 13 3-2-2球形SiOC材料清洗使用設備 15 3-2-3量測設備 17 3-3實驗設計 19 3-3-1球形SiOC材料製備 19 3-3-2球形SiOx/C材料製備(歧化) 20 3-3-3高壓反應內部溫壓量測 21 第四章 研究結果與討論 22 4-1 催化劑對PDMS裂解之影響 22 4-1-1 PDMS裂解之溫壓量測 22 4-1-2 催化劑加入對SiOC形貌之影響 24 4-2 PDMS/hexane製備SiOC材料形貌之比較 25 4-2-1催化劑比例對形貌之影響 25 4-2-2 持溫時間對形貌之影響 27 4-2-3己烷比例對形貌之影響 29 4-2-4無己烷下催化劑比例與時間對形貌之影響 32 4-2-5 各條件對產率影響之探討 35 4-3 SnCl4 /SiCl4摻雜之影響 37 4-3-1 SnCl4摻雜探討 37 4-3-1 SiCl4摻雜探討 41 4-4 SiOx/C歧化溫度之影響 45 4-5 SiOx/C材料電性表現 47 第五章 結論 50 參考文獻 51 | |
| dc.language.iso | zh-TW | |
| dc.subject | 高壓合成 | zh_TW |
| dc.subject | 球形SiOx/C | zh_TW |
| dc.subject | 游離碳 | zh_TW |
| dc.subject | 負極材料 | zh_TW |
| dc.subject | 鋰電池 | zh_TW |
| dc.subject | high pressure synthesis | en |
| dc.subject | anode | en |
| dc.subject | lithium-ion battery | en |
| dc.subject | free carbon | en |
| dc.subject | SiOx/C sphere | en |
| dc.title | 鋰電池碳矽氧負極材料的高壓製備方法之研究 | zh_TW |
| dc.title | Pressure‐Induced Vapor Synthesis of SiOC Material for Lithium Ion Battery Anode | en |
| dc.date.schoolyear | 109-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 王丞浩(Hsin-Tsai Liu),何國川(Chih-Yang Tseng) | |
| dc.subject.keyword | 高壓合成,球形SiOx/C,游離碳,負極材料,鋰電池, | zh_TW |
| dc.subject.keyword | high pressure synthesis,SiOx/C sphere,free carbon,anode,lithium-ion battery, | en |
| dc.relation.page | 54 | |
| dc.identifier.doi | 10.6342/NTU202104215 | |
| dc.rights.note | 同意授權(限校園內公開) | |
| dc.date.accepted | 2021-10-29 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 化學工程學研究所 | zh_TW |
| 顯示於系所單位： | 化學工程學系 | |
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