Enhancement of the electrochemical performance of lithium-ion batteries by SiO₂@poly(2-acrylamido-2-methylpropanesulfonic acid) nanosphere addition into a polypropylene membrane

Abstract

The surface of SiO2 nanospheres was coated with poly(2-acrylamido-2-methylpropanesulfonic acid) bearing strong electron withdrawing sulfonic and amide groups, enhancing the dissociation ability of the lithium salt of the liquid electrolyte and absorbing anions via H-bonds.

Preparation and characterization of nanofibrous cellulose as solid polymer electrolyte for lithium-ion battery applications

“…The electrolyte uptake of the membrane is the main factor for ionic conductivity. 13 The dried BC was exposed in an argon-filled glove box for 90 min to measure the electrolyte retention. The weights of BC before ( W 0 ) and after ( W t ) absorption were measured to show the liquid electrolyte uptake ( η ) as calculated using eqn (2) where η is the uptake of liquid electrolyte.…”

Heat resistant microporous membranes based on soluble poly(aryl ether ketone) copolymers for lithium ion battery separator

“…In spite of low cost and excellent electrochemical stability, these polymers suffer from low‐thermal stability and electrolyte affinity 5–7 . Although some modification methods, including but not limited to, coating, grafting and blending were introduced to improve the performance of LIBs, the intrinsic low‐thermal stability of PP and PE remains unsolved issue to impair the safety of LIBs 8–13 . In addition, increased thickness and complex manufacture process raises cost and limits scalability.…”