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One-Step Production of Sulfur and Nitrogen Co-doped Graphitic Carbon for Oxygen Reduction: Activation Effect of Oxidized Sulfur and Nitrogen

Authors

  • Jing Wang,

    1. ZJU-NHU United R&D Center, Center for Chemistry of High-Performance and Novel Materials, Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, 310028 (P.R. China) http://mypage.zju.edu.cn/chemwy
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  • Dr. Zheng Xu,

    1. Laboratory of Organosilicon Chemistry and Material Technology, Hangzhou Normal University, Hangzhou, 310012 (P.R. China)
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  • Yutong Gong,

    1. ZJU-NHU United R&D Center, Center for Chemistry of High-Performance and Novel Materials, Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, 310028 (P.R. China) http://mypage.zju.edu.cn/chemwy
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  • Chuanlong Han,

    1. ZJU-NHU United R&D Center, Center for Chemistry of High-Performance and Novel Materials, Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, 310028 (P.R. China) http://mypage.zju.edu.cn/chemwy
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  • Prof. Dr. Haoran Li,

    1. ZJU-NHU United R&D Center, Center for Chemistry of High-Performance and Novel Materials, Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, 310028 (P.R. China) http://mypage.zju.edu.cn/chemwy
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  • Prof. Dr. Yong Wang

    Corresponding author
    1. ZJU-NHU United R&D Center, Center for Chemistry of High-Performance and Novel Materials, Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, 310028 (P.R. China) http://mypage.zju.edu.cn/chemwy
    • ZJU-NHU United R&D Center, Center for Chemistry of High-Performance and Novel Materials, Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, 310028 (P.R. China) http://mypage.zju.edu.cn/chemwy===

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Abstract

Oxidized sulfur and nitrogen co-doped graphitic carbon (SN-G) was one-step synthesized simply by annealing a solid mixture of D-glucosamine hydrochloride, melamine, and trithiocyanuric acid. By tailoring the additive dosage and the pyrolysis temperature, correlations between the structure, composition, and electrochemical performance of SN-G were systematically elucidated. To our excitement, the SN3-G sample pyrolyzed at 900 °C with a dominant oxidized sulfur content exhibited striking electrocatalytic activity in alkaline medium, which was free from the crossover effect, and its long-term durability was superior to that of commercial Pt/C (20 wt %). Furthermore, oxidized sulfur that was reported to be chemically inactive for the ORR was proven to be active, which was supported by both experimental results and density functional theory calculations.

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