1 / 17

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.

kordell
Download Presentation

指導教授 ： 王聖璋 博士 報告人 : 林恩賢

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related