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A general dual-templating approach to biomass-derived hierarchically porous heteroatom-doped carbon materials for enhanced electrocatalytic oxygen reduction

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Abstract

Herein we report a general dual-templating approach to prepare hierarchically macro-/meso-/microporous heteroatom-doped carbon materials using diverse low-cost biomass precursors. Nitrogen/oxygen-doped carbon materials with hierarchical porosity are first synthesized as an example using Mg5(OH)2(CO3)4/ZnCl2 as hard templates and glucose/urea as carbon and heteroatom sources through a high-temperature thermal reaction and subsequent etching treatment. This approach is very versatile and can be applied to produce many hierarchically structured heteroatom-doped carbon materials via pyrolysis of other biomass precursors, including roots, stems, leaves, flowers and fruits of various plants. Lastly, we demonstrate that the as-prepared hierarchically porous nitrogen/oxygen-doped carbon materials manifest enhanced electrocatalytic performance for oxygen reduction reaction in alkaline electrolyte.

Graphical abstract: A general dual-templating approach to biomass-derived hierarchically porous heteroatom-doped carbon materials for enhanced electrocatalytic oxygen reduction

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Publication details

The article was received on 21 Sep 2018, accepted on 21 Dec 2018 and first published on 21 Dec 2018


Article type: Paper
DOI: 10.1039/C8EE02779J
Citation: Energy Environ. Sci., 2019, Advance Article
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    A general dual-templating approach to biomass-derived hierarchically porous heteroatom-doped carbon materials for enhanced electrocatalytic oxygen reduction

    X. Li, B. Y. Guan, S. Gao and X. W. (. Lou, Energy Environ. Sci., 2019, Advance Article , DOI: 10.1039/C8EE02779J

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