Bifunctional NiCo-CuO nanostructures: a promising catalyst for energy conversion and storage
學年 114
學期 1
出版（發表）日期 2025-08-20
作品名稱 Bifunctional NiCo-CuO nanostructures: a promising catalyst for energy conversion and storage
作品名稱（其他語言）
著者 Thanigai Arul Kumaravelu; Ta Thi Thuy Nga; Ramana Ramya J; Gajendiran J; Karthikeyan M; Wu-Ching Chou; Jeng-Lung Chen; Chi-Liang Chen; Bi-Hsuan Lin; Chao-Hung Du; Ping-Hung Yeh; Asokan Kandasami; Ju-Hung Hsu; Chun-Chieh Wang; Chung-Li Dong
單位
出版者
著錄名稱、卷期、頁數 Small Methods 9(8), 2401463
摘要 This investigation explores the potential of co-incorporating nickel (Ni) and cobalt (Co) into copper oxide (CuO) nanostructures for bifunctional electrochemical charge storage and oxygen evolution reactions (OER). A facile wet chemical synthesis method is employed to co-incorporate Ni and Co into CuO, yielding diverse nanostructured morphologies, including rods, spheres, and flake. The X-ray diffraction (XRD) and Raman analyses confirmed the formation of NiCo-CuO nanostructure, with minor phases of nickel oxide (NiO) and cobalt tetraoxide (Co3O4). High-resolution Transmission Electron Microscope (HRTEM) also confirms the diverse morphologies and the minor phases of oxides. Synchrotron X-ray absorption spectroscopy revealed higher charge states of Cu, Ni, and Co in the NiCo-CuO nanostructure, enhancing its charge storage and OER. Site-selective X-ray absorption near edge structure analysis elucidated the spatial distribution of Cu, Ni, and Co in the nanostructure. Furthermore, extended X-ray absorption fine structure spectroscopy provided insights into the local atomic structures, revealing increased coordination numbers and interatomic distances in the NiCo-CuO nanostructure. In situ Raman analysis discloses the transformation of Co3O4 into cobalt hydroxide (Co(OH)2) and cobalt oxide (CoO) into cobalt oxyhydroxide (CoOOH) The NiCo-CuO nanostructures exhibited superior specific capacitance, favorable Tafel behavior, and low overpotential positioning as promising bifunctional materials for energy storage and conversion applications. This work contributes to the development of efficient CuO nanocatalysts.
關鍵字 atomic structure; electronic structure; energy conversion; energy storage; in situ Raman spectroscopy
語言 en
ISSN 2366-9608
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
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/129525 )