Premium
Four‐Layer Tin–Carbon Nanotube Yolk–Shell Materials for High‐Performance Lithium‐Ion Batteries
Author(s) -
Chen Peng,
Wu Fengdan,
Wang Yong
Publication year - 2014
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201301198
Subject(s) - materials science , lithium (medication) , anode , tin , carbon nanotube , nanotube , nanotechnology , layer (electronics) , carbon fibers , nanostructure , silicon , ion , electrode , chemical engineering , composite material , chemistry , optoelectronics , metallurgy , composite number , organic chemistry , medicine , engineering , endocrinology
Abstract All high‐capacity anodes for lithium‐ion (Li‐ion) batteries, such as those based on tin (Sn) and silicon (Si), suffer from large volume changes during cycling with lithium ions, and their high capacities can be only achieved in the first few cycles. We design and synthesize a unique four‐layer yolk–shell tin–carbon (Sn–C) nanotube array to address this problem. The shape and size of the exterior Sn nanotube@carbon core–shell layer, the encapsulated interior Sn nanowire@carbon nanotube core–shell layer, and the filling level of each layer can be all controlled by adjusting the experimental conditions. Such a nanostructure has not been reported for any metal or metal oxide‐based material. Owing to the special design of the electrode structure, the four‐layer hierarchical structure demonstrates excellent Li‐ion storage properties in terms of high capacity, long cycle life, and high rate performance.