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Synthesis of Nitrogen-Doped Porous Carbon Spheres with Improved Porosity toward the Electrocatalytic Oxygen Reduction
Gu, Daguo1; Ma, Ruguang2; Zhou, Yao2; Wang, Fangfang2; Yan, Kang3; Liu, Qian2,4; Wang, Jiacheng2,4
2017
发表期刊ACS Sustainable Chemistry and Engineering
卷号5期号:11页码:11105-11116
摘要In this study, a series of activated N-doped porous carbon spheres (ANCSs) have been prepared from biomass as the carbon source to be used as highly active and stable electrocatalysts toward the electrocatalytic oxygen reduction reaction (ORR). Hydrothermal carbonization of biomass glucose, which obtains uniform carbon nanopsheres, is followed by doping N atoms by treatment in ammonia and subsequent activation treatment to form ANCSs. The resultant ANCSs possess a large specific surface area of up to 2813 m2/g and pore volume of up to 1.384 cm3/g, and adjustable N contents (2.38-4.53 atom %) with increasing activation temperature. The graphitic and pyridinic-N groups dominate in various N functional groups in the ANCSs. Remarkably, the 1000 °C-activated sample demonstrates competitive activity and outstanding stability and methanol crossover toward the ORR with a four-electron transfer pathway in alkaline media compared to commercial Pt/C catalyst. This excellent performance should be mainly due to effective N-doping and high porosity which can boost the mass transfer and charge transfer and provide a larger number of active sites for the ORR. The unique spherical morphologies with improved porosity as well as excellent stability and recyclability make these ANCSs among the most promising ORR electrocatalysts in practical applications. © 2017 American Chemical Society.
DOI10.1021/acssuschemeng.7b03046
EI入藏号20174604395061
EI主题词Doping (additives)
EI分类号641.3 Mass Transfer - 761 Nanotechnology - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 931.2 Physical Properties of Gases, Liquids and Solids - 933 Solid State Physics - 951 Materials Science
引用统计
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25772
专题中国科学院上海硅酸盐研究所
作者单位1.School of Materials Engineering, Yancheng Institute of Technology, 1 Xiwang Avenue, Yancheng, Jiangsu Province; 224051, China;
2.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai; 200050, China;
3.State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing; 210016, China;
4.Shanghai Institute of Materials Genome, 99 Shangda Road, Shanghai; 200444, China
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GB/T 7714
Gu, Daguo,Ma, Ruguang,Zhou, Yao,et al. Synthesis of Nitrogen-Doped Porous Carbon Spheres with Improved Porosity toward the Electrocatalytic Oxygen Reduction[J]. ACS Sustainable Chemistry and Engineering,2017,5(11):11105-11116.
APA Gu, Daguo.,Ma, Ruguang.,Zhou, Yao.,Wang, Fangfang.,Yan, Kang.,...&Wang, Jiacheng.(2017).Synthesis of Nitrogen-Doped Porous Carbon Spheres with Improved Porosity toward the Electrocatalytic Oxygen Reduction.ACS Sustainable Chemistry and Engineering,5(11),11105-11116.
MLA Gu, Daguo,et al."Synthesis of Nitrogen-Doped Porous Carbon Spheres with Improved Porosity toward the Electrocatalytic Oxygen Reduction".ACS Sustainable Chemistry and Engineering 5.11(2017):11105-11116.
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