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Recent Progress in Research on High‐Voltage Electrolytes for Lithium‐Ion Batteries
Author(s) -
Tan Shi,
Ji Ya J.,
Zhang Zhong R.,
Yang Yong
Publication year - 2014
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201402175
Subject(s) - electrolyte , electrochemistry , ionic liquid , high voltage , materials science , battery (electricity) , lithium (medication) , chemistry , inorganic chemistry , electrode , chemical engineering , voltage , nanotechnology , organic chemistry , electrical engineering , catalysis , engineering , medicine , power (physics) , physics , quantum mechanics , endocrinology
Developing a stable and safe electrolyte that works at voltages as high as 5 V is a formidable challenge in present Li‐ion‐battery research because such high voltages are beyond the electrochemical stability of the conventional carbonate‐based solvents available. In the past few years, extensive efforts have been carried out by the research community toward the exploration of high‐voltage electrolytes. In this review, recent progress in the study of several promising high‐voltage electrolyte systems, as well as their recipes, electrochemical performance, electrode compatibility, and characterization methods, are summarized and reviewed. These new electrolyte systems include high‐voltage film‐forming additives and new solvents, such as sulfones, ionic liquids, nitriles, and fluorinated carbonates. It appears to be very difficult to find a good high‐voltage (∼5 V) electrolyte with a single‐component solvent at the present stage. Using mixed fluorinated–carbonate solvents and additives are two realistic solutions for practical applications in the near term, while sulfones, nitriles, ionic liquids and solid‐state electrolyte/polymer electrolytes are promising candidates for the next generation of high‐voltage electrolyte systems.