CARBON NANOTUBES - GRAPHENE HYBRID STRUCTURES FOR SEPARATOR FREE SILICON - SULFUR BATTERIES
    6.
    发明申请
    CARBON NANOTUBES - GRAPHENE HYBRID STRUCTURES FOR SEPARATOR FREE SILICON - SULFUR BATTERIES 审中-公开
    碳纳米管 - 石墨混合结构用于分离器免费硅 - 硫电池

    公开(公告)号:WO2015003038A1

    公开(公告)日:2015-01-08

    申请号:PCT/US2014/045201

    申请日:2014-07-02

    Abstract: Provided herein are electrochemical systems and related methods of making and using electrochemical systems. Electrochemical systems of the invention implement novel cell geometries and composite carbon nanomaterials based design strategies useful for achieving enhanced electrical power source performance, particularly high specific energies, useful discharge rate capabilities and good cycle life. Electrochemical systems of the invention are versatile and include secondary lithium ion cells, such as silicon - sulfur lithium ion batteries, useful for a range of important applications including use in portable electronic devices. Electrochemical cells of the present invention also exhibit enhanced safety and stability relative to conventional state of the art lithium ion secondary batteries by using prelithiated active materials to eliminate the use of metallic lithium and incorporating carbon nanotube and/or graphene, composite electrode structures to manage residual stress and mechanical strain arising from expansion and contraction of active materials during charge and discharge.

    Abstract translation: 本文提供了电化学系统和制备和使用电化学系统的相关方法。 本发明的电化学系统实现了用于实现增强的电源性能,特别是高比能量,有用的排放速率能力和良好的循环寿命的新型电池几何形状和基于复合碳纳米材料的设计策略。 本发明的电化学系统是通用的,并且包括二次锂离子电池,例如硅 - 硫锂离子电池,其可用于一系列重要应用,包括用于便携式电子设备中。 本发明的电化学电池相对于现有技术的锂离子二次电池,通过使用预氧化的活性材料来消除使用金属锂并掺入碳纳米管和/或石墨烯,还显示出增强的安全性和稳定性,复合电极结构用于管理残余物 在充放电期间活性物质膨胀和收缩引起的应力和机械应变。

Patent Agency Ranking