A hierarchical porous carbon material for high power, lithium ion batteries

We synthesize a carbon anode material with unique nanostructure for high power lithium ion batteries. The carbon material is composed of numerous clusters of carbon nanobeads, and shows a macro-meso-micro hierarchical porous structure. This unique nanostructure appears to facilitate the rapid transf...

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Bibliographic Details
Published in:Electrochimica acta 2011-10, Vol.56 (24), p.8576-8581
Main Authors: Yang, Juan, Zhou, Xiang-yang, Zou, You-lan, Tang, Jing-jing
Format: Article
Language:English
Subjects:
Anode
Anodes
Applied sciences
Carbon
Carbon cluster
Direct energy conversion and energy accumulation
Double layer
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
Graphite
High power
Lithium batteries
Lithium ion batteries
Nanocomposites
Nanomaterials
Nanostructure
Porous materials
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Description
Summary:We synthesize a carbon anode material with unique nanostructure for high power lithium ion batteries. The carbon material is composed of numerous clusters of carbon nanobeads, and shows a macro-meso-micro hierarchical porous structure. This unique nanostructure appears to facilitate the rapid transfer of lithium ions and a very large ion adsorption. It exhibits a reversible capacity of 407.4 mAh g −1 and its rate performance is drastically improved in comparison with that of the commercial graphite. The unique structure enables the anode to combine the advantages of both lithium ion batteries and electrochemical double layer capacitors, resulting in the good electrochemical performance.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2011.07.047