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- W3022680903 endingPage "119091" @default.
- W3022680903 startingPage "119091" @default.
- W3022680903 abstract "Abstract Atomically dispersed metal-nitrogen-carbon complexes on carbon supports have drawn tremendous attention in the electrocatalysis fields. Herein, we managed the synthesis of atomically dispersed binary NixFe100-x-NC (x = 0–100) materials with tunable Ni/Fe ratios and investigated their underneath synergy effects for the enhancement of oxygen reduction (ORR) and oxygen evolution reactions (OER). EXAFS revealed the abundant presence of Ni(N3)-Fe(N3)-Cn moieties in Ni66Fe34-NC sample. XPS fine scans indicated deep synergy of dual-site Ni/Fe that favored more charge localized over Ni/Fe sites. Electrochemical measurments showed that the Ni66Fe34-NC delivered a very high ORR half-wave potential (E1/2) of 0.85 V and a low OER overpotential of 467 mV at ∼10 mA cm−2 (Ej=10). The Fe site with Ni neighboring, as suggested by DFT simulations and in-situ Raman, was the responsible site for both ORR and OER. Furthermore, the Ni66Fe34-NC-assembled Zn-air battery afforded large specific power density and extraordinary cycling stability." @default.
- W3022680903 created "2020-05-13" @default.
- W3022680903 creator A5014521316 @default.
- W3022680903 creator A5033882723 @default.
- W3022680903 creator A5038564562 @default.
- W3022680903 creator A5042973046 @default.
- W3022680903 creator A5043472647 @default.
- W3022680903 creator A5062193442 @default.
- W3022680903 creator A5064208659 @default.
- W3022680903 creator A5086664284 @default.
- W3022680903 creator A5087525540 @default.
- W3022680903 date "2020-10-01" @default.
- W3022680903 modified "2023-10-17" @default.
- W3022680903 title "Boosting the bifunctional oxygen electrocatalytic performance of atomically dispersed Fe site via atomic Ni neighboring" @default.
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