Citrulline-induced mesoporous CoS/CoO heterojunction nanorods triggering high-efficiency oxygen electrocatalysis in solid-state Zn-air batteries

A NiFe/NiSe2 heterojunction bifunctional catalyst rich in oxygen vacancies introduced using dielectric barrier discharge plasma for liquid and flexible all-solid-state rechargeable Zn–air batteries

“…52 Accordingly, the DBD-NiFe/NiSe 2 @NCNT displays a Δ E of 0.711 V, lower than those of the catalysts we prepared for comparison (Fig. 5f) and some other reported superior bifunctional electrocatalysts (Table S4†), such as FeCo/Se-CNT (0.750 V), 53 Co 2 P/CoN-in-NCNTs (0.790 V), 17 FC-Ni 3 N/NCNT (0.790 V), 54 CoS/CoO PNRs (0.82 V) 55 and NiCo 2 S 4 /N-CNTs (0.800 V), 56 demonstrating its great potential application in ZABs.…”

N-doped carbon nanotubes encapsulated with FeNi nanoparticles derived from defect-rich, molecule-doped 3D g-C3N4 as an efficient bifunctional electrocatalyst for rechargeable zinc–air batteries

“…1–4 Nevertheless, the sluggish kinetics for the oxygen reduction reaction (ORR)/oxygen evolution reaction (OER) during discharge and charge processes led to insufficient attainable energy density, which was only 40–50% of their theoretical value. 5–9 Precious metal-based (Pt-based ORR and Ru and/or Ir-based OER) catalysts were characterized by their high catalytic activities, but their inferior durability, high cost, and scarcity hindered their practical application in ZABs. 10–12 Therefore, it was urgent to create nonprecious-metal-based bifunctional ORR/OER catalysts with excellent activity and stability.…”

Porous Ni3S2–Co9S8 Carbon Aerogels Derived from Carrageenan/NiCo-MOF Hydrogels as an Efficient Electrocatalyst for Oxygen Evolution in Rechargeable Zn–Air Batteries

“…For the past few years, transition metal sulfide (TMS) materials, particularly, cobalt sulfide has been widely studied on account of its abundant resources, environmental friendliness, and high electrocatalytic activity of OER. , For example, Liu et al fabricated graphene-supported Ni 3 Fe/Co 9 S 8 composites, exhibiting outstanding OER electrocatalytic activity . Huang et al studied that N, O, and S three-layer carbon-coated Co 9 S 8 materials exhibited significant catalytic performance of OER .…”