利用簡易合成方法所得氮氧化鈦的濾膜做為超級電容器的應用上

Facile Synthesis of Free-standing Titanium Oxynitride Sheets as A Supercapacitor

劉曉萍(Hsiao-Ping Liu)

指導教授 ： 李紫原

國立清華大學/工學院/材料科學工程學系/碩士(2012年)

https://doi.org/10.6843/NTHU.2012.00342

摘要

本研究中先行利用水熱法和酸洗步驟得到鈦酸氫的自支撐薄膜。
藉由氨氣體氛圍下高溫熱處理可得到氮氧化鈦的自支撐薄膜。
此氮氧化鈦的自支撐薄膜同時具有高導電性，化學穩定性和多種
價數態的金屬氧化物，因此可做為超級電容的應用。於合成的氮氧化
鈦的自支撐薄膜中，以中孔洞奈米纖維的N64 樣品有著電容最好的表
現(5 mVs-1, 572.7 Fg-1) 。且氮氧化鈦相較於其他超級電容材
料有著便宜和製備簡單的優點，更由於氮氧化鈦為單一材料，更避免了
複合材料的界面問題。這些結果都顯示了N64 樣品可作為優異的一個超
級電容的材料。
另外，本研究中也利用N64 樣品組成一個簡單的兩極式固態電
容器元件，從這固態電容器的測試中再次驗證N64 元件為典型的超
級電容行為，且相較於熟知的超級電容器材料有較大的工作電位視窗。
因此，氮氧化鈦材料於日後應用於超級電容器上具有相當潛力。

關鍵字

自支撐薄膜 ； 氮氧化鈦 ； 超級電容

並列摘要

In this study, titanium oxynitride sheets were obtained by nitration using hydroxo titanate with as prepared by hydrothermal method as the precursor under ammonia atmosphere at different temperature.
Titanium oxynitride sheets would be used in supercapacitors due to its high conductivity, chemical stability and multi oxidation states.
Among these sheets, N64 show excellent capacitance (5 mVs-1, 572.7 Fg-1). This is a cost-effective and simple preparation for a single-material supercapacitor, thereby eliminating the concern for a junction. The titanium oxynitride sheets, composed of mesoporous nanofibers with high porosity and multi-oxidation state of the center metal, exhibit both electric double-layer and pseudocapacitance significantly. These results demonstrate that this material can be a promising electrode material for supercapacitors for energy storage.
In addition, a supercapacitor device of two electrodes system was successfully prepared by assembling two FSM of N64 which were sandwiched within PVA/H2SO4. It shown that N64 is a typical behavior of supercapacitor with large working window. This suggests that N64 may play a potential role in electrode material for further electrochemical
applications.

並列關鍵字

free-standing membrane ； titanium oxynitride ； supercapacitor

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