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Niu, Wen-Jun [Verfasser:in]; Sun, Qiao-Qiao [Verfasser:in]; He, Jin-Zhong [Verfasser:in]; Chen, Jiang-Lei [Verfasser:in]; Gu, Bing-Ni [Verfasser:in]; Liu, Ming-Jin [Verfasser:in]; Chung, Chia-Chen [Verfasser:in]; Wu, You-Zhi [Verfasser:in]; Chueh, Yu-Lun [Verfasser:in]

Zeolitic Imidazolate Framework-Derived Copper Single Atom Anchored on Nitrogen-Doped Porous Carbon as Highly Efficient Electrocatalysts for Oxygen Reduction Reaction

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  • Medientyp: E-Book
  • Titel: Zeolitic Imidazolate Framework-Derived Copper Single Atom Anchored on Nitrogen-Doped Porous Carbon as Highly Efficient Electrocatalysts for Oxygen Reduction Reaction
  • Beteiligte: Niu, Wen-Jun [Verfasser:in]; Sun, Qiao-Qiao [Verfasser:in]; He, Jin-Zhong [Verfasser:in]; Chen, Jiang-Lei [Verfasser:in]; Gu, Bing-Ni [Verfasser:in]; Liu, Ming-Jin [Verfasser:in]; Chung, Chia-Chen [Verfasser:in]; Wu, You-Zhi [Verfasser:in]; Chueh, Yu-Lun [Verfasser:in]
  • Erschienen: [S.l.]: SSRN, [2022]
  • Umfang: 1 Online-Ressource (55 p)
  • Sprache: Englisch
  • DOI: 10.2139/ssrn.4011808
  • Identifikator:
  • Entstehung:
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  • Beschreibung: Here, copper single atoms anchored on a nitrogen-doped porous carbon (Cu-N/PC) derived from zeolitic imidazolate frameworks (ZIFs) as highly efficient electrocatalysts for ORR were demonstrated. Specifically, as a nitrogen-rich bridge-molecule, tubular g -C 3 N 4 (TCN) can trap free Cu ions through the electrostatic interaction in the initial stage. Then, the Cu ions-doped TCN can be used to regulate the extent of copper and nitrogen doping, the electronic structure, as well as the specific surface area and pore diameter of the Cu-N/PC. As a result, the strong synergistic coupling effects at the atomic interface between Cu atoms and the carbon matrix may significantly enhance the ORR activity by adjusting the reaction free energy of intermediate adsorption, leading to a more positive onset potential ( E 0 = 0.97 V vs. RHE) and half-wave potential ( E 1/2 = 0.88 V) than the commercially available Pt/C catalyst ( E 0 = 0.94, E 1/2 = 0.85 V). Furthermore, the homemade disposable Zn-air battery (ZAB) equipped with Cu-N/PC is able to deliver excellent performance, including a peak power density of 215.8 mW cm −2 and a specific capacity of 704.9 mAh g −1 based on Zn anode, outperforming the Pt/C catalyst. The finding highlights a new guideline for constructing Cu-N/PC catalyst with a well-designed structure and superior property for advanced fuel cells cathode materials
  • Zugangsstatus: Freier Zugang