Research Progresses of Two Kinds of Novel Electrolyte Lithium Salts: Lithium Bis(oxalato) Borate and Lithium Oxalyldifluroborate

Lithium bis(oxalato)borate (LiBOB) and lithium oxalyldifluroborate (LiODFB) are promising boron-based lithium salts for lithium ion batteries. Advantages, disadvantages, and recent developments of each lithium salt were introduced respectively in this article. In addition, ionic conductivities and compatibilities with electrode materials were emphatically reviewed.