利用電化學方法在可撓式基板成長鉑奈米結構 與其在電催化之表現

Electrochemical Synthesis of Nanostrucutred Platinum on a Flexible Substrate and its Electrocatalytic Performance

胡庭禎(Ting-Zhen Hu)

指導教授 ： 裘性天 ； 李紫原

國立交通大學/理學院/應用化學系所/碩士(2015年)

https://doi.org/10.6842/NCTU.2015.00684

摘要

本研究中，我們利用雙電極電化學沉積在室溫下 ，將鉑奈米樹狀和奈米花狀結構成長在自製且低成本的可撓式碳電極表面上。透過調控界面活性劑以及助導劑的濃度，來控制其在電鍍過程中的晶面成長方向 進而得到不同的鉑奈米結構，且深入探討不同變因對鉑奈米結構之影響，以及可能成長機制之推測。
本研究發現，奈米樹狀鉑擁有27.86 m2/g 電化學活性表面積，而奈米花狀鉑則是擁有高的電化學活性表面積 54.15 m2/g。另外，透過甲醇氧化反應，我們可以得到其起始電位分別是0.460 V和0.459 V。

關鍵字

樹狀鉑 ； 花狀鉑 ； 電化學活性表面積 ； 甲醇氧化 ； 起始電位 ； 電鍍

並列摘要

In this study, we deposited Pt nanodendrites (Pt NDs) and Pt nanoflowers (Pt NFs) on a flexible carbon substrate in simple two-electrode system at room temperature. By controlling the concentration of surfactant and electric aid agent, we obtained various Pt structures. Because the surfactant and electric aid agent assist the Pt growth on special orientation, we discussed these factors on Pt structures in detail. Then, we proposed the possible growth mechanism for Pt .
In the hydrogen electrosorption test, we got the Pt NDs with electrochemical active surface area (ECSA) 27.86 m2/g, and the Pt NFs with ECSA 54.15 m2/g. The ECSA of commercial Pt/C is around 43.80 m2/g. In methanol oxidation reaction test, the onset potentials of Pt NDs and Pt NFs are 0.460 V and 0.459 V, respectively.

並列關鍵字

Pt dendrite ； Pt flower ； electrochemical active surface area ； methanol oxidation reaction ； onset potential ； electrodeposition

參考文獻

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