教師資料查詢 | 類別: 期刊論文 | 教師: 董崇禮 CHUNG-LI DONG (瀏覽個人網頁)

標題:NiCo2O4/graphene quantum dots (GQDs) for use in efficient electrochemical energy devices: An electrochemical and X-ray absorption spectroscopic investigation
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出版(發表)日期2020/05/15
作品名稱NiCo2O4/graphene quantum dots (GQDs) for use in efficient electrochemical energy devices: An electrochemical and X-ray absorption spectroscopic investigation
作品名稱(其他語言)
著者Han-Wei Chang; Ji-Xuan Fu; Yu-Cheng Huang; Ying-Rui Lu; Chun-Hong Kuo; Jeng-Lung Chen; Chi-Liang Chen; Jyh-Fu Lee; Jin-Ming Chene; Yu-Chen Tsai; Wu Ching Chou; Chung-Li Dong
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出版者
著錄名稱、卷期、頁數Catalysis Today 348, p.290-298
摘要NiCo2O4/graphene quantum dots (GQDs) were synthesized by the incorporation of GQDs into NiCo2O4 as electrode materials for use in electrochemical energy devices. The electronic structure and the electrochemical performance of NiCo2O4/GQDs were investigated by X-ray absorption spectroscopy (XAS) and electrochemical measurements. The rich redox active sites were revealed on the NiCo2O4/GQDs, which were formed by the strong Csingle bondOsingle bondNi/Co interaction between NiCo2O4 and GQDs. The synergetic double-layer capacitive and pseudo-capacitive properties were suggested to provide favorable electrochemical characteristics. In/ex situ XAS elucidates local electronic and chemical environments and provides insights into the energy storage/conversion mechanisms. Analytical results demonstrate that the NiCo2O4/GQDs have strong oxygen-carbon bridges and have more Ni active sites than does NiCo2O4, favoring metal-to-ligand charge transfer at the interface between NiCo2O4 and GQDs, critically influencing electrochemical performance. This work contributes importantly to the field by elucidating an energy storage/conversion mechanism for electrochemical energy devices.
關鍵字NiCo2O4;Graphene quantum dots;X-ray absorption spectroscopy
語言英文(美國)
ISSN1873-4308
期刊性質國外
收錄於SCI;
產學合作
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國別美國
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