SBIR Phase II: Lithium Reservoir Nanocarbons for Lithium Ion Batteries

这个小型企业创新研究(SBIR)第二阶段项目将开发锂离子电池阳极，利用低成本碳纳米纤维(CNF)的独特形态。主要工作将集中在通过各种纳米纤维表面改性技术降低不可逆容量，表征阳极放电率上限，以及开发一种新型的复合负极材料，将CNF与形成高能锂合金的元素相结合。后一种努力有可能将CNF的高倍率能力与合金的较高工作电压相结合，从而协同增加复合阳极两个组分的可逆容量。安全、可充电、廉价的锂离子电池在从消费电子产品到航天器的不同市场享受着越来越多的客户基础。碳纳米纤维的独特形态，以及这些材料可以很容易地转变为锂离子电池生产商和用户的现有客户基础的事实，为这一尖端研究带来了巨大的希望。

This Small Business Innovation Research (SBIR) Phase II project will develop Li-ion battery anodes that exploit the unique morphology of low cost carbon nanofibers (CNF). Primary efforts will focus on reduction of irreversible capacity, through a variety of nanofiber surface modification techniques, characterization of the upper limits of anode discharge rate, and development of a new type of compound anode material that combines CNF with elements that form high energy alloys of lithium. The latter effort has the potential to combine the high rate capability of CNF with the higher operation voltage of alloys in a manner that synergistically increases the reversible capacity of both components of the compound anode. Safe, rechargeable, inexpensive Li-ion batteries are enjoying a growing customer base in diverse markets from consumer electronics to space vehicles. The unique morphology of carbon nanofibers and the fact that these materials can readily be transitioned into an existing client base of Li-ion battery producers and users, holds great promise for this cutting-edge research.