Application of Polyperinaphthalenic Organic Nano-particles Prepared by Laser Ablation to Anode Electrodes for Lithium Ion Secondary Batteries

摘要

Polyperinaphthlenic organic nano-particles (PPN-NP) with polyperinaphthalene (PPN) structure for anode electrodes of ultra thin rechargeable Li ion batteries were prepared on temperature-controlled substrates by laser ablation (LA) of mixture target of 3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) with Co powder (PTCDA/Co) using a 308nm(XeCl) pulsed excimer laser beam. It was found that LA of PTCDA/Co at a fluence of more than 1.0Jcm~(-2)pulse~(-1) led to produce effectively fragments without anhydride groups of PTCDA. FT-IR and Raman spectroscopy revealed that LA of PTCDA/Co enabled us to obtain better-defined films consisting of PPN-NP with electric conductivity of ～1x10~(-1)Scm~(-1) on a substrate at 300℃. A trial piece of thin lithium ion rechargeable battery with the films was fabricated to appraise performance of the films as anode thin electrodes for ultra thin rechargeable lithium ion batteries. Electrochemical doping characteristics of lithium ion into the films obtained by LA were performed to verify the lithium doping mechanism by in-situ Raman spectroscopy.