Assembly of Graphene Sheets into Hierarchical Structures for High-Performance Energy Storage

The electrodes with the hierarchical nanoarchitectures could offer a huge increase in energy storage capacity. However, the ability to achieve such hierarchical architectures on a multiple scale still has remained a great challenge. In this paper, we report a scalable self-assembly strategy to creat...

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Bibliographic Details
Published in:ACS nano 2011-05, Vol.5 (5), p.3831-3838
Main Authors: Yin, Shengyan, Zhang, Yanyan, Kong, Junhua, Zou, Changji, Li, Chang Ming, Lu, Xuehong, Ma, Jan, Boey, Freddy Yin Chiang, Chen, Xiaodong
Format: Article
Language:English
Subjects:
Electric Power Supplies
Electrodes
Energy Transfer
Equipment Design
Equipment Failure Analysis
Graphite - chemistry
Membranes, Artificial
Nanostructures - chemistry
Nanostructures - ultrastructure
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Summary:The electrodes with the hierarchical nanoarchitectures could offer a huge increase in energy storage capacity. However, the ability to achieve such hierarchical architectures on a multiple scale still has remained a great challenge. In this paper, we report a scalable self-assembly strategy to create bioinspired hierarchical structures composed of functionalized graphene sheets to work as anodes of lithium-ion batteries. The resulting electrodes with novel multilevel architectures simultaneously optimize ion transport and capacity, leading to a high performance of reversible capacity of up to 1600 mAh/g, and 1150 mAh/g after 50 cycles. Importantly, the process to fabricate such hierarchical structures is facile, low-cost, green, and scalable, providing a universal approach for the rational design and engineering of electrode materials with enhanced performance, and it may have utility in various applications, including biological scaffold, catalysis, and sensors.
ISSN:1936-0851
1936-086X
DOI:10.1021/nn2001728