公开(公告)号：US20140127397A1

公开(公告)日：2014-05-08

申请号：US14123387

申请日：2012-05-25

Applicant: Thrivikraman Prem Kumar ,  Ashok Kumar Shukla ,  Thanudass Sri Devi Kumari ,  Arul Manuel Stephan

Inventor： Thrivikraman Prem Kumar ,  Ashok Kumar Shukla ,  Thanudass Sri Devi Kumari ,  Arul Manuel Stephan

IPC: H01M4/04

CPC classification number: H01M4/0402 ,  C01B32/215 ,  H01M4/1393 ,  H01M4/587 ,  H01M10/052

Abstract: The present invention provides a process for the production of high-capacity kish graphitic lithium-insertion anode materials and negative electrodes prepared therefrom for lithium-ion batteries. The graphitic materials are produced by precipitating excess carbon present in supersaturated solutions of carbon in iron/steel uninoculated or inoculated with metals/metalloid singly or in combination. The form of carbon used for dissolution is a carbon-containing polymeric precursor such as biomaterials and non-biodegradable plastic wastes, the carbonization of which can be carried out in situ or prior to addition in the melt. The graphitic products deliver reversible capacities between 300 and 600 mAh·g−1 with flat voltage profiles for electrochemical insertion/deinsertion of lithium at potentials less than 200 mV.

Abstract translation: 本发明提供一种用于生产用于锂离子电池制备的大容量kish石墨锂插入阳极材料和由其制备的负极的方法。 石墨材料是通过沉积未接种或接种金属/准金属的单独或组合的铁/钢的过饱和碳溶液中存在的过量碳来生产的。 用于溶解的碳的形式是含碳聚合物前体，例如生物材料和不可生物降解的塑料废物，其碳化可以在原位或在加入熔体之前进行。 石墨产品在300和600 mAh·g-1之间提供可逆容量，具有扁平电压曲线，用于电位低于200 mV的电化学插入/脱嵌。