Journal
RSC ADVANCES
Volume 4, Issue 85, Pages 45619-45624Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra08945f
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Funding
- National Science Foundation of China (NSFC) [20934002, 51073043]
- National Basic Research Program of China [2009CB930000]
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3D graphene aerogel-based microporous N-doped carbon composites can be prepared by hydrothermal assembly of graphene oxide with chitosan. A large amount of chitosan added into the system acts as a coating to adhere to the graphene sheets and separate the graphene. During the hydrothermal reaction, the GO is reduced and forms 3D graphene-based frameworks which provide the 3D template for the efficient growth of N-doped carbon on the graphene surface, and the chitosan, which went through a dehydration and carbonization process, forms N-doped carbon strongly adhered to the graphene sheets due to the pi-pi stacking interactions which effectively solve the aggregation problems between the graphene layers. Furthermore, the resulting microporous N-doped carbon composites show enhanced supercapacitive performance and high efficiency as metal-free catalysts for oxygen reduction reaction.
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