Cobalt-based Graphene Composite Anode Materials synchronous hydrothermal preparation process characteristics and mechanism of lithium removal View Homepage


Ontology type: schema:MonetaryGrant     


Grant Info

YEARS

2011-2013

FUNDING AMOUNT

190000 CNY

ABSTRACT

Graphene material has excellent electron conductivity and flexibility, it would be used in lithium ion battery composites, not only can increase the conductivity of the composite material, it can also inhibit the effects of the volume of the composite material. The cobalt-based compound has a high capacity lithium. This topic through synchronization Hydrothermal Preparation of the cobalt-based graphene composite material (graphene - cobalt hydroxide, graphene - CoO), study the preparation process characteristics, make full use of synergies graphene and cobalt-based compound, to achieve complementary advantages. By graphene - a cobalt hydroxide composite charge and discharge process in situ XAFS and XRD tests to study the mechanism of electrochemical lithium insertion and extraction process. Depth study of the effect of temperature on the bulk conductivity of the lithium ion diffusion and electrochemical capacity of cobalt-based composite material graphene lithium insertion and extraction process, to ascertain the main factors cobalt-based graphene composites, high temperature charge-discharge performance. Select the appropriate conductive polymer (polypyrrole, poly (3,4-ethylene - dioxythiophene)) coated with cobalt-based graphene composite material, the composite material has good high temperature performance, and to clarify the conductive polymer coating cobalt-based graphene composite electrode / electrolyte interface influence and mechanism of charge transfer process. More... »

URL

http://npd.nsfc.gov.cn/projectDetail.action?pid=21006063

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