Binder is one of the key materials that affect the electrochemical performance of lithium-ion batteries.Previous research has showed that the combined application of carboxymethyl cellulose(CMC)and styrene-butadiene rubber(SBR)in lithium-ion batteries contributes to reducing volume effect.The high elasticity of SBR is beneficial to the recovery of volume in the charge and discharge cycles,but SBR,occupying the inner space of the battery,is non-conductive and bad in terms of the electrochemical performance.I...