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Two‐Dimensional Layered BiOX (X=Cl, Br) Compounds as Anode Materials for Lithium‐Ion Batteries
Author(s) -
Ye Liqun,
Wang Lijuan,
Xie Haiquan,
Su Yurong,
Jin Xiaoli,
Zhang Can
Publication year - 2015
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201500161
Subject(s) - anode , electrochemistry , materials science , lithium (medication) , hydrothermal circulation , ternary operation , electrode , nanomaterials , ion , current density , inorganic chemistry , chemical engineering , nanotechnology , chemistry , organic chemistry , medicine , physics , quantum mechanics , computer science , engineering , programming language , endocrinology
Many layered structure nanomaterials have been suggested as promising electrode materials for lithium‐ion batteries. Ternary layered compounds, BiOX (X=Cl, Br) are usually used as photocatalysts for energy generation and environmental protection. However, there has not been a report of BiOX as electrode materials for lithium‐ion batteries to this point. In this study, two‐dimensional BiOX nanosheets are synthesized using a hydrothermal method, and electrochemical measurements show that layered BiOX can display remarkable electrochemical performance for use as an anode in lithium‐ion batteries. Capacities of approximately 254 and 230 mAh g −1 are maintained after 15 cycles at a current density of 500 mA g −1 for BiOCl and BiOBr, respectively. The electrochemical properties are much better than that of BiOI (137 mAh g −1 ). Study of the mechanism reveals that Li 3 OX (X=Cl, Br) and Li 3 Bi are formed after the lithium ions become embedded in the layered BiOX.