Interconnected nitrogen-doped carbon nanofibers derived from polypyrrole for high-performance Li/S batteries


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Interconnected nitrogen-doped carbon nanofibers (INC) prepared through the carbonization of polypyrrole (PPy) precursor is designed as scaffold to load sulfur. The BET measurement showed that INC possessed abundant mesopores with a relatively high specific surface area and a large total pore volume. The sulfur/INC (S/INC) composite was synthesized by a melt-diffusion of sulfur nanoparticle into INC network. Transmission electron microscopy showed the formation of a nanofiber structure with uniform sulfur coating on the surface of INCs. When tested as cathodes for Li/S batteries, a high initial discharge capacity of 1173 mAh g–1 and a reversible capacity of 702 mAh g–1 after 50 cycles at 0.1 C are achieved, which ascribe to the chemical and physical adsorption properties of mesoporous and nitrogen-doped INC.

作者简介

Haipeng Li

Research Institute for Energy Equipment Materials; Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology; School of Material Science & Engineering

Email: yongguangzhang@hebut.edu.cn
中国, Tianjin, 300130; Tianjin, 300130; Tianjin, 300130

Zhuo Wang

Research Institute for Energy Equipment Materials; Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology; School of Material Science & Engineering

Email: yongguangzhang@hebut.edu.cn
中国, Tianjin, 300130; Tianjin, 300130; Tianjin, 300130

Yongguang Zhang

Research Institute for Energy Equipment Materials; Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology; Synergy Innovation Institute of GDUT

编辑信件的主要联系方式.
Email: yongguangzhang@hebut.edu.cn
中国, Tianjin, 300130; Tianjin, 300130; Heyuan, Guangdong Province

Xin Wang

Synergy Innovation Institute of GDUT

Email: yongguangzhang@hebut.edu.cn
中国, Heyuan, Guangdong Province

Yan Zhao

Research Institute for Energy Equipment Materials; Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology

Email: yongguangzhang@hebut.edu.cn
中国, Tianjin, 300130; Tianjin, 300130

M. Maximov

Peter the Great Saint-Petersburg Polytechnic University

Email: yongguangzhang@hebut.edu.cn
俄罗斯联邦, Saint-Petersburg, 195221

Puguang Ji

Research Institute for Energy Equipment Materials; Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology

Email: yongguangzhang@hebut.edu.cn
中国, Tianjin, 300130; Tianjin, 300130

Fuxing Yin

Research Institute for Energy Equipment Materials; Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology

Email: yongguangzhang@hebut.edu.cn
中国, Tianjin, 300130; Tianjin, 300130

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