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- W4366768345 abstract "Abstract Metallophthalocyanines (MPcs) hold great promise in the electrochemical reduction of oxygen; however, their practical applications in energy storage and conversion are still limited by their low stability and poor water oxidation activity. Herein, a novel stable 2D imide‐linked metalphthalocyanine framework (denoted as FePc‐PI) is reported, that has atomically dispersed Fe‐N 4 sites deposited on the KB substrate via in situ growth, followed by incorporation of ultrafine nickel oxide nanoparticles (NiO x @FePc‐PI/KB) to induce bifunctional electrocatalytic activities for the oxygen reduction reaction and oxygen evolution reaction. Benefitting from the robust aromatic backbone, the engineered catalytic centers, and the unique electronic structures owing to the interaction between the Fe‐N 4 sites and NiO x species, the newly developed NiO x @FePc‐PI/KB catalyst exhibits excellent reversible oxygen bifunctional activity ( E 1/2 = 0.926 V, η 10 = 285 mV), delivering a record‐low overpotential difference (Δ E ) of 0.59 V, which far exceeds the noble‐metal‐based Pt/C+RuO 2 benchmark (Δ E = 0.77 V) and represents the highest level for reported bifunctional electrocatalysts. Furthermore, the rechargeable aqueous Zn‐air batteries assembled with the NiO x @FePc‐PI/KB catalyst deliver a high peak power density of 232.9 mW cm −2 and long‐term cycling durability over 1400 cycles. Flexible all‐solid‐state Zn‐air batteries exhibit stable cycling at various flat/bent/flat states, thus demonstrating their excellent prospects in realistic implementations." @default.
- W4366768345 created "2023-04-25" @default.
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- W4366768345 date "2023-04-22" @default.
- W4366768345 modified "2023-10-04" @default.
- W4366768345 title "A Stable Imide‐Linked Metalphthalocyanine Framework with Atomically Dispersed Fe‐N<sub>4</sub> Sites and Ultrafine Nickel Oxide Nanoparticles to Boost Reversible Oxygen Electrocatalysis with a Record‐Low Δ<i>E</i> of 0.59 V" @default.
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- W4366768345 doi "https://doi.org/10.1002/aenm.202300325" @default.
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