期刊論文
| 學年 | 114 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2025-08-11 |
| 作品名稱 | Tailored Cobalt Single Atoms on Strong Metal–Support Interactions Drive the Tandem Bifunctional Electrocatalytic Overall Water Splitting |
| 作品名稱（其他語言） | |
| 著者 | Selvadharshini Karuppuchamy; Thanigai Arul Kumaravelu; Ta Thi Thuy Nga; Chi-Liang Chen; Ting-Shan Chan; Chung-Li Dong; Deepak Arumugam; Shankar Ramasamy; Mani Govindasamy; Chih-Yu Kuo; Selvaraju Thangavelu |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | ACS Applied Energy Materials 8(15), p.11099-11114 |
| 摘要 | The rational strategy for synthesizing highly stable single-atom catalysts (SAC) remains very challenging. However, SAC aggregation and migration can be tackled through strong metal–support interaction (SMSI). Herein, we disclose the cobalt single-atom decoration over the MoP2/WP2 support (Co1–MoP2/WP2) utilizing a facile sonication followed by calcination strategy, confirmed by HAADF-STEM, XANES, and EXAFS. Subsequently, Co1–MoP2/WP2 loaded in nickel foam demands a low overpotential of 49 mV for the hydrogen evolution reaction (HER) and 250 mV for the oxygen evolution reaction (OER) at a current density of 10 mA cm–2. An alkaline water electrolyzer designed using the Co1–MoP2/WP2 catalyst as both the anode and cathode delivers a very low cell voltage of 1.49 V at 10 mA cm–2, surpassing the benchmark electrocatalyst with a stability of 48 h. Importantly, X-ray absorption spectroscopy discloses the local atomic and electronic charge transfer between Co SAC and the SMSI support, leading to a decrease in the overpotential and an increase in its catalytic efficiency. Furthermore, DFT is used to assess the change in the electronic characteristics caused by anchoring Co SAC on MoP2/WP2, resulting in improved electrocatalytic properties. Thus, this work provides a key insight into enhancing the overall water splitting performance by incorporating SAC into the MoP2/WP2 support. |
| 關鍵字 | cobalt single-atom catalyst; transition metal phosphides; hydrogen evolution reaction; oxygen evolution reaction; overall water splitting |
| 語言 | en |
| ISSN | 2574-0962 |
| 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 | 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/987654321/129477 ) |