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Solution Plasma Sputtering Processes for the Synthesis of PtAu/C Catalysts for Li-Air Batteries

机译:溶液等离子体溅射工艺合成锂空气电池的PtAu / C催化剂

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Clean, nanosized PtAu/C catalysts were fabricated, using a simple one-step synthesis technique thatinvolved sputtering discharge in liquid, and did not require the use of chemical species such assurfactants and/or reductants. This solution plasma sputtering was driven by a pulsed power supply,and was performed on the discharge between Pt and Au targets in a liquid dispersion of carbon black.Fine PtAu nanoparticles with an average diameter of 5.7 nm were uniformly deposited on the carbonsupport. The production and composition of the PtAu nanoparticles could be controlled via changes inthe sputtering conditions. The Au-rich Pt19Au81/C (atomic %) catalysts provided higher specificcapacity, even in carbonate-based electrolyte Li-air batteries, reducing the amount of Li2CO3 that wasdeposited on the bare carbon.
机译:使用简单的一步合成技术(其涉及在液体中进行溅射放电),制备了清洁的纳米级PtAu / C催化剂,并且不需要使用化学物质,例如表面活性剂和/或还原剂。该溶液等离子体溅射由脉冲电源驱动,并在炭黑的液体分散体中对Pt和Au靶之间的放电进行放电。平均直径为5.7 nm的精细PtAu纳米颗粒均匀沉积在碳载体上。可以通过改变溅射条件来控制PtAu纳米颗粒的生产和组成。富金的Pt19Au81 / C(原子%)催化剂即使在碳酸盐基电解液锂空气电池中也提供了更高的比容量,从而减少了沉积在裸碳上的Li2CO3的量。

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