A carbon material doped with both porous FeOx and N as an efficient catalyst for oxygen reduction reactions

IF 5.7 3区材料科学 Q2 Materials Science

New Carbon Materials Pub Date : 2024-12-01 DOI:10.1016/S1872-5805(24)60876-0

Jian Gao , Xin-yao Wang , Ling-xin Meng , Zhen Yin , Na Ma , Xiao-yao Tan , Peng Zhang

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引用次数: 0

Abstract

To replace precious metal oxygen reduction reaction (ORR) electrocatalysts, many transition metals and N-doped carbon composites have been proposed in the last decade resulting in their rapid development as promising non-precious metal catalysts. We used Ketjenblack carbon as the precursor and mixed it with a polymeric ionic liquid (PIL) of [Hvim]NO₃ and Fe(NO₃)₃, which was thermally calcined at 900 °C to produce a porous FeO_x, N co-doped carbon material denoted FeO_x-N/C. Because the PIL of [Hvim]NO₃ strongly combines with and disperses Fe³⁺ ions, and NO³⁻ is thermally pyrolyzed to form the porous structure, the FeO_x-N/C catalyst has a high electrocatalytic activity for the ORR in both 0.1 mol L⁻¹ KOH and 0.5 mol L⁻¹ H₂SO₄ electrolytes. It was used as the catalyst to assemble a zinc-air battery, which had a peak power density of 185 mW·cm⁻². Its superior electrocatalytic activity, wide pH range, and easy preparation make FeO_x-N/C a promising electrocatalyst for fuel cells and metal-air batteries.

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来源期刊

New Carbon Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.10

自引率

8.80%

发文量

3245

审稿时长

5.5 months

期刊介绍： New Carbon Materials is a scholarly journal that publishes original research papers focusing on the physics, chemistry, and technology of organic substances that serve as precursors for creating carbonaceous solids with aromatic or tetrahedral bonding. The scope of materials covered by the journal extends from diamond and graphite to a variety of forms including chars, semicokes, mesophase substances, carbons, carbon fibers, carbynes, fullerenes, and carbon nanotubes. The journal's objective is to showcase the latest research findings and advancements in the areas of formation, structure, properties, behaviors, and technological applications of carbon materials. Additionally, the journal includes papers on the secondary production of new carbon and composite materials, such as carbon-carbon composites, derived from the aforementioned carbons. Research papers on organic substances will be considered for publication only if they have a direct relevance to the resulting carbon materials.