Study of lithium conducting single ion conductor based on polystyrene sulfonate for lithium battery application

• Lithium-ion-conducting poly(4-lithium styrene sulfonic acid) was synthesized.
• Free-standing polymer electrolyte films were fabricated and the processing method was optimized.
• High ionic conductivity of 1.4 × 10−3S/cm achieved.
• Lithium ion transport mechanism was elucidated using NMR and electrochemical techniques.