公开(公告)号：WO1997020768A1

公开(公告)日：1997-06-12

申请号：PCT/US1996019384

申请日：1996-12-06

Applicant: SANDIA CORPORATION

Inventor： SANDIA CORPORATION ,  DODDAPANENI, Narayan ,  INGERSOLL, David ,  CROOKER, Robert, W. ,  WANG, James, C., F. ,  FIRSICH, David, W.

IPC: C01B31/02

CPC classification number: H01G9/155 ,  C01B32/05 ,  C04B35/524 ,  D01F11/129 ,  H01M4/587 ,  H01M2004/021 ,  Y02E60/13

Abstract: A method of producing carbon materials for use as electrodes in rechargeable batteries. Electrodes prepared from these carbon materials exhibit intercalation efficiencies of APPROX 80 % for lithium, low irreversible loss of lithium, long cycle life, are capable of sustaining a high rate of discharge and are cheap and easy to manufacture. The method comprises a novel two-step stabilization process in which polymeric precursor materials are stabilized by first heating in an inert atmosphere and subsequently heating in air. During the stabilization process, the polymeric precursor material can be agitated to reduce particle fusion and promote mass transfer of oxygen and water vapor. The stabilized, polymeric precursor materials can then be converted to a synthetic carbon, suitable for fabricating electrodes for use in rechargeable batteries, by heating to a high temperature in a flowing inert atmosphere.

Abstract translation: 一种生产用作可再充电电池中的电极的碳材料的方法。 由这些碳材料制备的电极表现出锂的约80％的嵌层效率，锂的低不可逆损耗，循环寿命长，能够维持高的放电率，并且便宜且易于制造。 该方法包括一种新的两步稳定方法，其中聚合物前体材料通过在惰性气氛中首先加热并随后在空气中加热而稳定化。 在稳定化过程中，可以搅拌聚合物前体材料以减少颗粒熔融并促进氧气和水蒸汽的传质。 然后，通过在流动的惰性气氛中加热到高温，稳定化的聚合物前体材料可以转化为合成碳，适合于制造用于可再充电电池的电极。