期刊論文
| 學年 | 114 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2025-08-05 |
| 作品名稱 | Janus effect of FeCo dual atom catalyst with Co as active center in acidic oxygen reduction reaction |
| 作品名稱（其他語言） | |
| 著者 | Long-Ji Yuan; Zhen-Yu Miao; Xu-Lei Sui; Chi-Feng Lee; Qi Li; Mei-Jie Yin; Li-Xiao Shen; Ying-Rui Lu; Zi-Gang Zhao; Yu-Zhe Liu; Lin-Sheng Zhu; Wei Gong; Wen-Liang Feng; Hsiao-Tsu Wang; Guo-Xu Zhang; Zhen-Bo Wang |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Nature Communications 16, 7198 |
| 摘要 | Dual-atom catalysts (DACs) represent a frontier in heterogeneous electrocatalysis for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells. However, the dynamic evolution of active-site structure complicates mechanistic understanding. Herein, alloyed Fe-Co DACs with strong Fe-Co bonds are synthesized via molecular chelation and ionic coupling strategies. In-situ spectroscopy combined with theoretical calculation reveals the Janus effect of Fe-Co dual-atom sites: Co serves as the primary catalytic center for the 4e- process with Fe as the cooperative sites to absorb the *OH. This division-of-labor mechanism lowers the theoretical overpotential from 1.14 V to 0.43 V for acidic oxygen reduction reaction. Thus, the catalyst achieves a 0.852 V half-wave potential and 1.14 W cm-2 power density (2.0 bar H₂-O₂), sustaining 81% peak power after 10,000 cycles. These findings clarify DAC configuration-mechanism relationships, guiding the design of high-performance DACs. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 2041-1723 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | GBR |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/129452 ) |