Journal
ADVANCED MATERIALS
Volume 27, Issue 36, Pages 5264-5279Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201501115
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Funding
- Natural Science Funds for Excellent Young Scholars [21222608]
- Foundation for the Author of National Excellent Doctoral Dissertation of China [201251]
- Program for New Century Excellent Talents in University [NCET-12-0392]
- Program of Introducing Talents of Discipline to Universities [B06006]
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The increasing demand for energy has triggered tremendous research effort for the development of high-performance and durable energy-storage devices. Advanced graphene-based electrodes with high electrical conductivity and ion accessibility can exhibit superior electrochemical performance in energy-storage devices. Among them, binder-free configurations can enhance the electron conductivity of the electrode, which leads to a higher capacity by avoiding the addition of non-conductive and inactive binders. Graphene, a 2D material, can be fabricated into a porous and flexible structure with an interconnected conductive network. Such a conductive structure is favorable for both electron and ion transport to the entire electrode surface. In this review, the main processes used to prepare binder-free graphene-based hybrids with high porosity and well-designed electron conductive networks are summarized. Then, the applications of free-standing binder-free graphene-based electrodes in energy-storage devices are discussed. Future research aspects with regard to overcoming the technological bottlenecks are also proposed.
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