https://scholars.lib.ntu.edu.tw/handle/123456789/630806
標題: | Designing bifunctional ZIF-67 derivatives decorated N-doped carbon nanotubes as an electrocatalyst for oxygen conversion reaction in rechargeable zinc-air battery | 作者: | Aulia, Sofiannisa Chen, Kuei Yuan Chang, Ling Yu Wang, Yu Xuan Rinawati, Mia Lin, Ming Hsien KUO-CHUAN HO Yeh, Min Hsin |
關鍵字: | Bifunctional electrocatalyst | Co O 3 4 | Nickel cobalt layered-double hydroxide | Nitrogen-doped carbon nanotubes | Rechargeable zinc-air battery | ZIF-67 | 公開日期: | 1-十二月-2022 | 出版社: | ELSEVIER | 卷: | 141 | 來源出版物: | Journal of the Taiwan Institute of Chemical Engineers | 摘要: | Background: The rechargeable zinc-air battery performance relies heavily on its ability to execute oxygen conversion reaction in the air electrode under the charging/discharging process. Thus, developing a robust and highly efficient bifunctional oxygen electrocatalyst is crucial. Methods: Herein, by utilizing the feature of partial transformation for ZIF-67, the unique hybrid architecture of Co3O4 residing inside NiCo layered double hydroxide (Co3O4@NiCo-LDH) decorated on N-doped carbon nanotubes (N-CNTs) is designed. The initial etching of ZIF-67 with Ni2+ creates ZIF-67@NiCo-LDH, which is fully transferred into Co3O4@NiCo-LDH using a reflux process. Significant findings: Originating from ZIF's porous and enormous surface area and unique dual-site configuration from Co3O4@NiCo-LDH/N-CNT led to the excellent electrocatalytic activity and durability, identical to an increase in the half-wave potential (E1/2=0.81 V) for ORR, exceeding the original N-CNTs performance (E1/2=0.75 V). Furthermore, this structural network as a bifunctional electrocatalyst for air electrodes exhibited a high specific capacity of 602 mAh/g with the stability of up to 55 h, proving its indispensable role Co3O4@NiCo-LDH/N-CNTs configuration. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/630806 | ISSN: | 18761070 | DOI: | 10.1016/j.jtice.2022.104598 |
顯示於: | 化學工程學系 |
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