Single-thermal synthesis of bimetallic Co/Zn@NC under solvent-free conditions as an efficient dual-functional oxygen electrocatalyst in Zn–air batteries

Wang, Zechen; Hou, Xiaotong; Dekyvere, Sander; Mousavi, Bibimaryam; Chaemchuen, Somboon

doi:10.1039/d2nr03997d

Cited by 7 publications

(1 citation statement)

References 77 publications

(87 reference statements)

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“…Zeolitic imidazole frameworks (ZIFs) are suitable precursors for ORR catalysts via calcination. [ 11 ] ZIF‐derived ORR catalysts have practical application potential as a substitute for Pt/C catalysts due to their high catalytic activity. [ 12 ] Thus, the associative utilization of Ag nanoparticles and ZIF‐derived components is a potential strategy for designing antibacterial ORR catalysts for inhibiting biofouling pollution.…”

Section: Introductionmentioning

confidence: 99%

Ag@Co/Zn N‐Doped Carbon as Antibacterial Oxygen Reduction Catalysts for Microbial Fuel Cells

Jiang,

Chen,

Zhu

et al. 2024

Energy Tech

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Biofouling of air cathode surface decreases the electricity generation performance of membrane‐free microbial fuel cells (MFCs). Ag@Co/Zn N‐doped carbon (Ag@Co/Zn‐NC) is designed as an antibacterial oxygen reduction reaction (ORR) catalyst to inhibit biofouling on the cathode surface. The Co/Zn‐NC active component promotes ORR catalytic activity through the advantages of well‐distributed Co nanoparticles and numerous active sites. Superficial Ag nanoparticles act as antibacterial active species to inhibit bacterial proliferation and suppress biofilm growth. Ag@Co/Zn‐NC catalyst prevents bacterial adhesion and biofilm formation, effectively preventing excessive biofouling on the cathode surface. The antibacterial catalyst maintains a high catalytic activity and good ion diffusion properties without the adverse effects of biofouling, resulting in enhanced ORR durability of the air cathode. The assembled MFCs achieve high electricity generation during long‐term cyclic operation. The maximum power density retention percentage (82.6%) is higher than that of Co/Zn‐NC MFC (65.3%) and Pt/C MFC (52.4%) after continuous operation for 1200 h. Excellent operational durability is revealed for the air‐cathode MFCs assembled with the antibacterial ORR catalyst during the cyclic process. The novelty of this study is that the design of antibacterial catalysts inhibits the excessive growth of the cathode biofilm to improve the cyclic electricity generation performance of MFCs.

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Section: Introductionmentioning

confidence: 99%