Electrolyte perspective on stabilizing LiNi_0.8Co_0.1Mn_0.1O₂ cathode for lithium-ion batteries

Nickel-rich LiNi_0.8Co_0.1Mn_0.1O₂ (NCM811) is regarded as the promising cathode for lithium-ion batteries (LIBs). However, the challenges such as safety issues and poor cycling performance have seriously hindered its commercial applications. In order to overcome these difficulties, there has been extensive research and development of electrolyte modifications for high-energy-density LIBs with Ni-rich cathodes. Herein, this review introduces the research progress based on solvent additives, salt type additives and other electrolytes for LIBs with NCM811 cathode materials and discusses how they control the interface stability. In particular, some recommendations for further modification of enhancing electrolyte stability and improving NCM811 electrochemical properties are summarized and proposed, which put forward new design rules for the screening and customizing ideal electrolyte additives for high performance NCM811 cathode-based LIBs. Graphical abstract: [Figure not available: see fulltext.]