Low‐Temperature Growth of All‐Carbon Graphdiyne on a Silicon Anode for High‐Performance Lithium‐Ion Batteries |
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| Authors: | Hong Shang Zicheng Zuo Le Yu Fan Wang Feng He Yuliang Li |
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| Affiliation: | 1. Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. China;2. Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shanxi, P. R. China;3. University of Chinese Academy of Sciences, Beijing, P. R. China |
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| Abstract: | ![]()
In situ weaving an all‐carbon graphdiyne coat on a silicon anode is scalably realized under ultralow temperature (25 °C). This economical strategy not only constructs 3D all‐carbon mechanical and conductive networks with reasonable voids for the silicon anode at one time but also simultaneously forms a robust interfacial contact among the electrode components. The intractable problems of the disintegrations in the mechanical and conductive networks and the interfacial contact caused by repeated volume variations during cycling are effectively restrained. The as‐prepared electrode demostrates the advantages of silicon regarding capacity (4122 mA h g?1 at 0.2 A g?1) with robust capacity retention (1503 mA h g?1) after 1450 cycles at 2 A g?1, and a commercial‐level areal capacity up to 4.72 mA h cm?2 can be readily approached. Furthermore, this method shows great promises in solving the key problems in other high‐energy‐density anodes. |
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| Keywords: | 2D materials graphdiyne lithium‐ion batteries silicon anodes |
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