Three dimensional network Si–C composite coating constructed by porous skeletons as an integrated anode for lithium-ion batteries
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This paper reports a facile knife coating route to synthesize Cu-supported Si–C composite as an integrated anode for lithium-ion batteries. The composite displays a three dimensional (3D) network structure constructed by porous skeletons with Si nano-particles encapsulated in carbon matrix. The Cu-supported Si–C composite electrode demonstrates good capacity retention performance and rate performance. It delivers a high capacity of 1429 mA h g−1 at a current density of 1 A g−1 after 100 cycles and a capacity of 677 mA h g−1 at a high current density up to 20 A g−1. There are two facts responsible for its excellent electrochemical performance: (1) 3D network structure produced by volatilization of polymethylmethacrylate (PMMA) improves structure stability of the electrode; (2) abundant tunnels in skeletons made by volatilization of polyethylene glycol (PEG) increases diffusion of lithium-ions in the electrode.
This work was financially supported by the Natural Science Foundation of China (No. 51701114) and Shanghai Municipal Education Commission (High-energy Beam Intelligent Processing and Green Manufacturing).
This study was funded by the Natural Science Foundation of China (No. 51701114) and Shanghai Municipal Education Commission (High-energy Beam Intelligent Processing and Green Manufacturing).
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Conflict of interest
The authors declare that we have no conflict of interest.
- 8.H.D. Chen, Z.L. Wang, H.X. Hou, L.J. Fu, S.F. Wang, X.Q. Hu, H.Q. Qin, Y.P. Wu, Q. Ru, X. Liu, S.J. Hu, Mass-producible method for preparation of a carbon-coated graphite@plasma nano-silicon@carbon composite with enhanced performance as lithium ion battery anode. Electrochim. Acta 249, 113–121 (2017)CrossRefGoogle Scholar
- 15.K.Z. Cao, L.F. Jiao, H.Q. Liu, Y.C. Liu, Y.J. Wang, Z.P. Guo, H.T. Yuan, 3D hierarchical porous alpha-Fe2O3 nanosheets for high-performance lithium-ion batteries. Adv. Energy Mater. 5, 1401–1421 (2015)Google Scholar