Graphene bonded carbon nanofiber aerogels with high capacitive deionization capability. (10th January 2018)

• Record Type: Journal Article
• Authors: Luo, Guoming; Wang, Yuzhi; Gao, Lixin; Zhang, Daquan; Lin, Tong
• Is Part Of: Electrochimica acta. Volume 260(2018)
• Page Start: 656
• Page End: 663
• Publication Date: 2018-01-10
• Subjects: Electrospinning -- Carbon aerogel -- Capacitive deionization -- Cross-linked networks -- Electrosorption; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2017.12.012
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: We herein report a fascinating carbon aerogel that has a unique framework structure consisting of one-dimensional (i.e. nanofibers) and two-dimensional (i.e. graphene) carbon nanomaterials. Such a carbon aerogel was prepared by carbonization of electrospun polyacrylonitrile with graphene oxide sheets (GO). The nanofiber-graphene interconnection within the aerogel considerably enhances the electrochemical characteristics. The aerogel showed an electrosorption capacity of 15.7 mg g −1 in 500 mg L −1 NaCl solution, and the CDI cell exhibited stable performance over 100 cycles. Moreover, the carbon aerogel has good electrical conductivity and faster electron transfer rate. Such a cross-linked porous aerogel may provide a new strategy for highly efficient CDI applications. Graphical abstract: Highlights: A fascinating carbon aerogel with 3D layered porous structure is fabricated via electrospinning, freeze-shaping and carbonization. Novel structures and electrochemical properties of the electrodes are tested. The obtained carbon aerogel has good electrical conductivity and faster electron transfer rate. The obtained carbon aerogel exhibits extraordinary electrochemical characteristics and a high electrosorption capacity.