Bi-functional nitrogen-doped carbon protective layer on three-dimensional RGO/SnO2 composites with enhanced electron transport and structural stability for high-performance lithium-ion batteries

Dongxiao Yang; Haoyu Ren; Dapeng Wu; Wenchao Zhang; Xiangdong Lou; Danqi Wang; Kun Cao; Zhiyong Gao; Fang Xu; Kai Jiang

doi:10.1016/j.jcis.2019.01.126

Bi-functional nitrogen-doped carbon protective layer on three-dimensional RGO/SnO₂ composites with enhanced electron transport and structural stability for high-performance lithium-ion batteries

J Colloid Interface Sci. 2019 Apr 15:542:81-90. doi: 10.1016/j.jcis.2019.01.126. Epub 2019 Jan 30.

Authors

Dongxiao Yang¹, Haoyu Ren¹, Dapeng Wu², Wenchao Zhang³, Xiangdong Lou¹, Danqi Wang⁴, Kun Cao¹, Zhiyong Gao⁵, Fang Xu⁶, Kai Jiang⁷

Affiliations

¹ Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang City 453007, Henan Province, PR China.
² Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang City 453007, Henan Province, PR China; Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang City 453007, Henan Province, PR China. Electronic address: [email protected].
³ Institute for Superconducting & Electronic Materials, School of Mechanical, Materials, Mechatronics & Biomedical Engineering, Faculty of Engineering and Information Sciences, University of Wollongong, NSW 2500, Australia.
⁴ Swagelok Center for Surface Analysis of Materials, Case Western Reserve University, Cleveland, OH 44106, United States.
⁵ Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang City 453007, Henan Province, PR China; Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang City 453007, Henan Province, PR China. Electronic address: [email protected].
⁶ Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang City 453007, Henan Province, PR China; School of Environment, Henan Normal University, Xinxiang City 453007, Henan Province, PR China.
⁷ Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang City 453007, Henan Province, PR China; School of Environment, Henan Normal University, Xinxiang City 453007, Henan Province, PR China. Electronic address: [email protected].

PMID: 30735890
DOI: 10.1016/j.jcis.2019.01.126

Abstract

Three-dimensional reduced graphene oxide@SnO₂@nitrogen-doped carbon (3DG@SnO₂@N-C) composites are designed as high efficiency anode materials for lithium-ion batteries. The SnO₂ particle size, surface area and pore size distribution of the 3DG@SnO₂@N-C could be simply controlled by altering the GO dosages. The optimized 3DG@SnO₂@N-C electrode demonstrates a reversible capacity of 1349.5 mAh g^-1 after 100 cycles at the current density of 100 mA g^-1. Based on the structural and electrochemical dynamic tests, the bi-functional N-doped carbon coating layer could serve as both conductive channel for electron transport and as buffer layer to alleviate the volume change of embedded SnO₂ NPs. In addition, the cross-linked conducting 3DG with porous structure attributes to the reduced electron transport and Li ion diffusion resistances, which finally leads to the enhanced cycling stability and rate performances.

Keywords: Anode material; Composite; Lithium-ion battery; Three-dimensional graphene; Tin oxide.