Facile fabrication of graphitization-enhanced wrinkled paper-like N-doped porous carbon via a ZnCl2-modified NaCl-template method for use as an anode in lithium ion batteries

Abstract

Here, wrinkled paper-like carbon (WPC) is fabricated using a facile method using a ZnCl₂-modified NaCl-template method and subsequently annealed in Ar. Considering its use as a lithium ion battery (LIB) anode, the WPC electrode exhibits a large specific capacity of 1079 mA h g⁻¹ at 0.35 A g⁻¹ after 1000 cycles, a superior high-rate long-term cycling performance of 693 mA h g⁻¹ at 1 A g⁻¹ after 400 cycles and a good rate performance, which is superior to that of the sample before ZnCl₂ modification. The outstanding electrochemical properties of the WPC can be mainly attributed to the large specific surface area (1658.6 m² g⁻¹), abundant pore volume, enhanced graphitization and the wrinkled architecture after ZnCl₂ modification. However, this N-doped porous WPC has potential for use as a LIB electrode material.