期刊論文
| 學年 | 113 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2025-05-15 |
| 作品名稱 | Nitrogen-doping-induced electron spin polarization activates scandium oxide as high-performance zinc-air battery cathode |
| 作品名稱（其他語言） | |
| 著者 | Yuhui Chen; Jun Li; Yiqing Chen; Ying Cheng; Xinxin Tian; Dongdong Xiao; Hsiao-Tsu Wang; Ying-Rui Lu; Linjie Zhang; Wenlie Lin; Jun Luo; Lili Han |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Journal of Colloid and Interface Science 686, p.96-106 |
| 摘要 | Platinum (Pt) is the most active catalyst for the oxygen reduction reaction (ORR). However, the scarcity, high cost, and susceptibility to deactivation of Pt constrain its large-scale applications. Transition metal oxide (TMO) materials have emerged as promising alternatives due to their abundant availability and catalytic potential. Herein, we report a dissolution-and-carbonization strategy to synthesize a carbon-supported nitrogen-doped Sc2O3 catalyst (N-Sc2O3/C). Nitrogen doping significantly enhances the conductivity of the otherwise poor-conductivity Sc2O3, transforming it into a superior ORR catalyst. The synthesized N-Sc2O3/C exhibits remarkable ORR performance in 0.1 M KOH, achieving a half-wave potential of 0.92 V, which is 55 mV higher than the state-of-the-art commercial Pt/C (0.87 V). Moreover, as a cathode for a zinc-air battery, N-Sc2O3/C achieves a peak power density of 150.7 mW cm−2 and a specific capacity of 766.4 mAh gZn−1. Density functional theory calculations reveal that nitrogen doping induces electron spin polarization within Sc2O3, narrowing the bandgap. This enhanced electronic structure improves conductivity and optimizes the adsorption of oxygen intermediates, thereby facilitating the ORR process. Our study demonstrates that nitrogen doping activates the wide-bandgap Sc2O3 semiconductor, converting it into a highly efficient ORR electrocatalyst and highlighting the potential of wide-bandgap TMO materials in energy applications. |
| 關鍵字 | Transition metal oxide; Nitrogen doping; Scandium oxide; Oxygen reduction reaction; Zinc-air battery |
| 語言 | en |
| ISSN | 0021-9797 |
| 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 | USA |
| 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/987654321/129449 ) |