Preparation of ultrathin chiffon-like Ni-Al LDHs/graphene composite: Interlayer stacking of two-dimensional charged panels via electrostatic self-assembly for supercapacitor electrodes

Document Type

Article

Publication Date

1-1-2018

Abstract

In this article, Ni-Al LDHs/graphene composite is successfully fabricated via exfoliation and restacking method. As fabricated composite exhibits ultrathin nature of exfoliated LDHs deposited onto surface of graphene, yielding special chiffon like structure. Such structure can effectively overcome the agglomeration of initial LDHs and graphene sheets. The results of electrochemical performance confirm that Ni-Al LDHs/graphene composite exhibit enhanced performance in comparison with LDHs, which is related to the special chiffon like structure and high conductivity of graphene nanosheets. High performance of as-fabricated material can be identified via various electrochemical tests. In addition, an assembled asymmetric supercapacitor based on Ni-Al LDHs/graphene and active carbon exhibits a maximum energy density of 46.4 Wh kg−1 as well as a maximum power density of 6080 W kg−1, which indicates the potential of composite applied in energy storage-conversion devices.

Publication Source (Journal or Book title)

Journal of the Electrochemical Society

First Page

A784

Last Page

A792

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