Activation of iridium site based on IrO2 catalysts towards highly stable PEM water electrolyzer
學年 113
學期 2
出版（發表）日期 2025-02-05
作品名稱 Activation of iridium site based on IrO2 catalysts towards highly stable PEM water electrolyzer
作品名稱（其他語言）
著者 Hongmei Gao; Chi Song; Ru Chen; Tianyu Wu; Jun Zou; Shiqian Du; Chung-Li Dong; Yu-Cheng Huang; Rilong Zhu; Yanan Wang; Shuangyin Wang
單位
出版者
著錄名稱、卷期、頁數 Chemical Engineering Science 302(Part A), 120912
摘要 The exploitation of anode electrocatalysts with high activity and stability remains an enormous challenge in proton exchange membrane (PEM) water electrolyzer. Here we doped Mn to activate Ir site in IrO2 through the molten salt sealing method, and the optimized Mn0.1Ir0.9O2 exhibited superior OER performance. Mn doping optimized the electronic structure and dominant crystal planes of IrO2, as evidenced by our complementary characterizations. Impressively, the Mn0.1Ir0.9O2 exhibits superior performance in the PEM water electrolyzer, only requiring 1.79 V to attain 1 A cm−2 and offering long-term stability over 1200 h (attenuated only 17.5 μV h−1 compared to 1.27 mV/h for the original sample). DFT calculation shows Mn doping could activate Ir site, thus reducing the energy barrier of the rate-determining step for promoting OER. This work provides a strategy to design high-tolerance catalysts for the PEM water electrolyzer in actual working conditions.
關鍵字
語言 en
ISSN 1873-4405; 0009-2509
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/129530 )