期刊論文
| 學年 | 114 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2025-12-01 |
| 作品名稱 | Structural symmetry and regular octahedral atomic coordination in nanostructured NiMoO3 for supercapacitor electrode applications |
| 作品名稱（其他語言） | |
| 著者 | Thanigai Arul Kumaravelu; Ta Thi Thuy Nga; Yu-Cheng Shao; Hirofumi Ishii; Jeng-Lung Chen d; Chi-Liang Chen; Chih-Wen Pao; Yu-Cheng Huang; Chao-Hung Du; Ping-Hung Yeh; Yu-Po Chen; Asokan Kandasami; Ching-Hsiang Chen; Wu-Ching Chou; Chung-Li Dong |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Journal of Power Sources 658, 238245 |
| 摘要 | Understanding how structural symmetry, morphology, and atomic/electronic configurations influence electrochemical charge storage in bimetallic oxide nanostructures remains a critical challenge. In this study, Ni ions incorporated MoO3 (Ni: 0, 0.005, 0.025, and 0.030 M) nanostructures were synthesized via a hydrothermal method to investigate structure-property relationships in energy storage. The Ni doping induces diverse morphologies – flakes, spheres, needles, and flowers - depending on concentration. X-ray diffraction (XRD) and Raman spectroscopy confirm the coexistence of h-MoO3 and α-MoO3 phases, along with α-Ni(OH)2 in the optimized sample (NMO-2, 0.025 M Ni). NMO-2 exhibits a high specific capacitance of 277 F/g from a two-electrode cell and stable cyclic performance over 5000 cycles at 200 mA/g. Synchrotron x-ray spectroscopy reveals the transformation from distorted to regular octahedral coordination in MoO3, while in situ Raman spectroscopy demonstrates a reversible phase change from α-Ni(OH)2 to β-Ni(OH)2 under electrochemical cycling. These structural and phase transitions allow efficient ionic diffusion and charge transfer. This work provides critical insight into the role of structural symmetry and local atomic coordination in governing the electrochemical performance of bimetallic oxide-based energy storage systems. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 0378-7753; 1873-2755 |
| 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 | NLD |
| 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/987654321/129493 ) |