Aulia, SofiannisaSofiannisaAuliaChen, Kuei YuanKuei YuanChenChang, Ling YuLing YuChangWang, Yu XuanYu XuanWangRinawati, MiaMiaRinawatiLin, Ming HsienMing HsienLinKUO-CHUAN HOYeh, Min HsinMin HsinYeh2023-05-042023-05-042022-12-0118761070https://scholars.lib.ntu.edu.tw/handle/123456789/630806Background: 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.Bifunctional electrocatalyst | Co O 3 4 | Nickel cobalt layered-double hydroxide | Nitrogen-doped carbon nanotubes | Rechargeable zinc-air battery | ZIF-67journal article10.1016/j.jtice.2022.1045982-s2.0-85142457496WOS:000897538200001https://api.elsevier.com/content/abstract/scopus_id/85142457496