公开(公告)号：US20150295227A1

公开(公告)日：2015-10-15

申请号：US14250398

申请日：2014-04-11

申请人： Xin Zhao ,  Minjie Li ,  Yu-Ming Lin

发明人： Xin Zhao ,  Minjie Li ,  Yu-Ming Lin

IPC分类号： H01M4/134 ,  H01M4/1395 ,  H01M4/04

CPC分类号： H01M4/134 ,  H01M4/0404 ,  H01M4/0409 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/386 ,  H01M4/587 ,  H01M4/622 ,  H01M4/625

摘要： A silicon graphene-incorporated rechargeable Li-ion battery with enhanced energy delivery and cycling life comprising a high-performance Si/graphene composite anode, a cathode film and electrolyte is disclosed. The anode and cathode are immersed in or partially immersed in the electrolyte; wherein the anode is formed of a mixture of carbon coated Si and graphene composite with a polymer binder and a conductive additive. A method for fabricating such Si and graphene-based anode comprises the steps synthesis of carbon coated Si particles by polymer encapsulation and carbonization; enveloping the coated Si particles in graphene by mechanical agitation; formulating the carbon coated Si and graphene with a polymer binder and conductive additive; depositing the mixture onto current collectors. The anode structure affords a combination of superior rate capability, cycling life and improved volumetric capacity.

摘要翻译： 公开了一种具有增强的能量输送和循环寿命的含硅石墨烯的可充电锂离子电池，其包括高性能Si /石墨烯复合阳极，阴极膜和电解质。 将阳极和阴极浸入或部分浸入电解质中; 其中所述阳极由碳涂覆的Si和石墨烯复合材料与聚合物粘合剂和导电添加剂的混合物形成。 制造这种Si和石墨烯阳极的方法包括通过聚合物包封和碳化合成碳包覆的Si颗粒的步骤; 通过机械搅拌将涂覆的Si颗粒包裹在石墨烯中; 用聚合物粘合剂和导电添加剂配制碳涂覆的Si和石墨烯; 将混合物沉积到集电器上。 阳极结构提供优越的速率能力，循环寿命和改进的体积容量的组合。

公开(公告)号：US20150000118A1

公开(公告)日：2015-01-01

申请号：US13927125

申请日：2013-06-26

申请人： XIN ZHAO ,  Minjie Li

发明人： XIN ZHAO ,  Minjie Li

IPC分类号： H01M10/04

CPC分类号： H01M10/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  Y10T29/49108 ,  Y10T29/49112 ,  Y10T29/49115

摘要： A method for manufacturing a graphene-incorporated rechargeable Li-ion battery discloses a graphene-incorporated rechargeable Li-ion battery with enhanced energy and power delivery abilities. The method comprises the steps (a) fabricating a high-performance anode film based on graphene or graphene hybrid; (b) introducing a desired amount of lithium into the anode material to produce a prelithiated graphene-based anode; (c) constructing a full cell utilizing a cathode film and the prelithiated anode film. The graphene-based anodes incorporating exfoliated graphene layers overcome the large irreversible capacity and initial lithium ion consumption upon pre-lithiation, and demonstrate remarkably enhanced specific capacity and rate capability over conventional anodes.

摘要翻译： 一种制造含石墨烯的可再充电锂离子电池的方法公开了一种具有增强的能量和功率输送能力的石墨烯掺入的可再充电锂离子电池。 该方法包括步骤（a）制造基于石墨烯或石墨烯混合物的高性能阳极膜; （b）将所需量的锂引入阳极材料中以产生预先硫化的基于石墨烯的阳极; （c）利用阴极膜和预锂化的阳极膜构建全电池。 结合剥离的石墨烯层的基于石墨烯的阳极克服了预先锂化后的大的不可逆容量和初始的锂离子消耗，并且显示出比常规阳极显着提高的比容量和速率能力。