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首页> 外文会议>Conference on Photon Processing in Microelectronics and Photonics Jan 21-24, 2002 San Jose, USA >Preparation of carbonous nano-particles for anode electrodes of ultra thin lithium ion rechargeable batteries by laser ablation
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Preparation of carbonous nano-particles for anode electrodes of ultra thin lithium ion rechargeable batteries by laser ablation

机译：激光烧蚀制备超薄锂离子可充电电池阳极碳纳米粒子

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摘要

Carbonous nano-particles basically consisting of polyperinaphthalene (PPN), one of the low dimensional conducting polymers, are prepared on substrates at various temperatures by excimer laser ablation of 3,4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) using a 308nm(XeCl) pulsed excimer laser beam. Particles deposited on the substrates are applied to anode electrodes for ultra thin rechargeable Li ion batteries. Substrate temperature dependence of effective capacitance of lithium ions at first cycle are investigated. In addition, in-situ Raman spectroscopy of the particles under lithium ion doping and undoping is performed to elucidate the storage mechanism of lithium ion at cis-polyacetylene-type edge (phenanthrene-edge) of PPN structure. Reversible change of the spectrum in the region related C-H bending of PPN structure in lithium doping and undoping process supports a lithium insertion mechanism proposed by Zheng et al. where lithium atoms bind on the hydrogene-terminated edged of hexagonal carbon fragments.
机译：通过使用308nm（XeCl）对3,4,9,10-per四羧酸二酐（PTCDA）进行准分子激光烧蚀，在不同温度下在基材上制备基本由低维数导电聚合物之一的聚萘二甲酸乙二醇酯（PPN）组成的碳纳米粒子。 ）脉冲准分子激光束。沉积在基板上的颗粒被施加到用于超薄可充电锂离子电池的阳极上。研究了第一周期锂离子有效电容与基底温度的关系。另外，对锂离子掺杂和未掺杂下的颗粒进行原位拉曼光谱分析，以阐明锂离子在PPN结构的顺式聚乙炔型边缘（菲边缘）处的存储机理。锂掺杂和去掺杂过程中PPN结构C-H弯曲相关区域中光谱的可逆变化，支持了Zheng等人提出的锂插入机制。锂原子结合在六边形碳片段的氢封端边上。

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