Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/141357
Title: Fabricating 3D macroscopic graphene-based architectures with outstanding flexibility by the novel liquid drop/colloid flocculation approach for energy storage applications
Authors: Han, Meng
Jayakumar, Anjali
Li, Zongheng
Zhao, Qiannan
Zhang, Junming
Jiang, Xiaoping
Guo, Xiaolong
Wang, Ronghua
Xu, Chaohe
Song, Shufeng
Lee, Jong-Min
Hu, Ning
Keywords: Engineering::Chemical engineering
Issue Date: 2018
Source: Han, M., Jayakumar, A., Li, Z., Zhao, Q., Zhang, J., Jiang, X., . . . Hu, N. (2018). Fabricating 3D macroscopic graphene-based architectures with outstanding flexibility by the novel liquid drop/colloid flocculation approach for energy storage applications. ACS Applied Materials & Interfaces, 10(26), 21991-22001. doi:10.1021/acsami.8b02942
Journal: ACS Applied Materials & Interfaces
Abstract: Inspired by “water ripples” in nature and the flocculation phenomenon in colloid chemistry, a novel liquid drop/colloid flocculation approach is developed to fabricate an extremely flexible and compressible 3D macroscopic graphene-based architecture (hydrogels or aerogels), via a new coagulation-induced self-assembly mechanism. This facile and universal technique can be achieved in a neutral, acidic, or basic coagulation bath, producing microsized hydrogels with various structures, such as mushroom, circle, disc shapes, etc. The method also allows us to introduce various guest materials in the graphene matrix using transition metal salts as the coagulating bath. A mushroom-shaped NiCo oxide/GS hybrid aerogel (diameter: 3 mm) is prepared as an example, with ultrathin NiCo oxide nanosheets in situ grown onto the surface of graphene. By employing as binder-free electrodes, these hybrid aerogels exhibit a specific capacitance of 858.3 F g–1 at 2 A g–1, as well as a good rate capability and cyclic stability. The asymmetric supercapacitor, assembling with the hybrid aerogels as cathode and graphene hydrogels as anode materials, could deliver an energy density of 21 Wh kg–1 at power density of 4500 W kg–1. The ease of synthesis and the feasibility of obtaining highly flexible aerogels with varied morphologies and compositions make this method a promising one for use in the field of biotechnology, electrochemistry, flexible electronics, and environment applications.
URI: https://hdl.handle.net/10356/141357
ISSN: 1944-8244
DOI: 10.1021/acsami.8b02942
Rights: © 2018 American Chemical Society. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

SCOPUSTM   
Citations

10
Updated on Jan 15, 2021

PublonsTM
Citations

9
Updated on Jan 13, 2021

Page view(s)

20
Updated on Jan 16, 2021

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.