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指導教授 ： 王聖璋 博士 報告人 : 林恩賢

Nano Functional Ceramic Lab. 指導教授 ： 王聖璋 博士 報告人 : 林恩賢. No.8. Outline. 前言 實驗步驟 結果與討論 結論 未來工作. 前言.

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指導教授 ： 王聖璋 博士 報告人 : 林恩賢

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  1. Nano Functional Ceramic Lab. 指導教授：王聖璋 博士 報告人: 林恩賢 No.8

  2. Outline • 前言 • 實驗步驟 • 結果與討論 • 結論 • 未來工作

  3. 前言 • Regenerative fuel cell (RFC) is an energy storage and conversion system, which mainly consists of two separated subsystems: a fuel cell and a water electrolyzer. When the two subsystems are integrated into one unit, RFC becomes a unitized regenerative fuel cell (URFC) with a more compact configuration. + 質子交換膜燃料電池 固態電解質電解器 單一化可再生式燃料電池

  4. Pt generally functions as an active catalyst in ORR, while the others serve as active catalysts in OER . • 雙金屬觸媒必須具備之條件: • 1. 具有高比表面積 • 2. 必須有良好的導電性

  5. 對於效率提升有明顯差異的單元件有，雙極板以及膜電極組、觸媒等…。對於效率提升有明顯差異的單元件有，雙極板以及膜電極組、觸媒等…。

  6. 實驗步驟 (molar ratio Ir:IrO2=3:7) (molar ratio Ir:Pt=1:1)

  7. 結果與討論 • These results reveal that Ir NPs are uniformlydispersed on the surface of IrO2 NPs and coveredconsiderableportion of IrO2 surface area. (101) (200) (220) (111) (200) (311) Ir (JCPDS: 06-0598) IrO2(JCPDS:15-0807)

  8. The corresponding relative contents of Pt, Ir elements are 67.6 mol%,32.4 mol%. • The relative-contents are calculated to be 33.5 mol% Ir and 66.5 mol% IrO2

  9. 結論 • Pt/Ir-IrO2 catalyst has been fabricated by depositing Pt on Ir-IrO2 that was obtained through IrO2 surface modification with metallic Ir. • The electrocatalytic activity of Pt/Ir-IrO2 towards ORR is higher than that of Pt/IrO2 , and the electrocatalytic activity of Pt/Ir-IrO2 towards OER can be comparable to that of Pt/IrO2 . • This kind of the structure of Pt/Ir-IrO2 catalyst is beneficial for the stability of Pt because of the interaction between Pt NPs and Ir NPs, which can effectively prevent Pt from agglomerating. • This study may open a new concept to design highly active yet stable Pt-based bifunctional oxygen catalyst for URFC.

  10. A B C • Cl3Ir:OA=1:15 (mmol) , 310oC • 290oC • 270oC

  11. A B • Cl3Ir:OLA=1:10 mmol • Cl3Ir:OLA=1:10mmol , 添加TOP 2mmol

  12. 未來工作 • Pt-Ir 合成。 • Ir,Pt-Ir奈米粒子電化學分析 • Paper review

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