A bidirectionally conductive composite membrane based on copper-coated electrospun PI-CNT fibers as a current collector for lithium-ion batteries

Key Points

• To develop a bidirectional conductivity current collector using copper-coated electrospun fibers for lithium-ion batteries.
• Fabrication of a PI-CNT-Cu current collector via electrospinning and copper plating.
• Evaluation of surface roughness to improve adhesion and reduce interfacial resistance.
• Testing capacity retention over 190 cycles in a lithium-ion battery setup.
• The developed anode maintains 95.29% capacity after 190 charging cycles.
• Enhanced adhesion leads to lower interfacial resistance.