Table 1.

Electrolyte additives and their role in SIBs

Function	Additive	Beneficiary
Promoting SEI formation	FEC (fluoroethylene carbonate)[ 19 ] PST (prop‐1‐ene‐1,3‐sulton)[ 59 ] DTD (1,3,2‐Dioxathiolane‐2,2‐dioxide)[ 59 ] VC (vinylene carbonate)[ 60 ] TMSP (tris(trimethylsilyl) phosphite)[ 69 ] Rubidium and cesium salts[ 70 ] water (in ionic liquid electrolyte)[ 71 ] NaNO3 [ 61 ] SbF3 [ 72 ]	Hard carbon and alloy anode Hard carbon anode Hard carbon anode MoO2 anode Sn4P3 anode Hard carbon anode Na metal anode Na metal anode Na metal anode
Promoting CEI formation	AND (adiponitrile)[ 62 ] NaNO2 [ 73 ]	Na0.76Ni0.3Fe0.4Mn0.3O2 Na0[Co0.05Mn0.95]O2
Flame retardant	F‐EPE (2,2,3,3‐tetrafluoropropyl ether), EFPN (ethoxy(pentafluoro)cyclotriphosphazene)[ 67 ]	Na0.44MnO2 cathode and Na metal anode
Conductivity enhance	EMImFSI (1‐ethyl‐3‐methylimidazolium bis(fluoromethanesulfonyl)imide)[ 74 ]	Hard carbon anode
Scavenger	H‐ZSM‐5 zeolite[ 64 ] TMSPi (tris (trimethylsilyl) phosphite)[ 75 ]	NaaMO2 cathode and hard carbon anode Na3V2(PO4)2F3 cathode and hard carbon anode
Overcharge protection	Biphenyl[ 65 ]	Na0.44MnO2 cathode and Na metal anode