Format

Send to

Choose Destination
Adv Mater. 2017 Dec;29(47). doi: 10.1002/adma.201702747. Epub 2017 Nov 9.

Carbon-Heteroatom Bond Formation by an Ultrasonic Chemical Reaction for Energy Storage Systems.

Author information

1
Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
2
School of Energy and Chemical Engineering Center for Dimension Controllable Organic Frameworks, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
3
Department of Chemical Engineering, Wonkwang University, Iksandae-ro 460, Iksan, Jeonbuk, 54538, Republic of Korea.
4
Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea.
5
Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang, 790-784, Republic of Korea.
6
Agency for Defense Development, Yuseong, P. O. Box 35-4, Daejeon, 305-600, Republic of Korea.
7
Department of Physics, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.

Abstract

The direct formation of CN and CO bonds from inert gases is essential for chemical/biological processes and energy storage systems. However, its application to carbon nanomaterials for improved energy storage remains technologically challenging. A simple and very fast method to form CN and CO bonds in reduced graphene oxide (RGO) and carbon nanotubes (CNTs) by an ultrasonic chemical reaction is described. Electrodes of nitrogen- or oxygen-doped RGO (N-RGO or O-RGO, respectively) are fabricated via the fixation between N2 or O2 carrier gas molecules and ultrasonically activated RGO. The materials exhibit much higher capacitance after doping (133, 284, and 74 F g-1 for O-RGO, N-RGO, and RGO, respectively). Furthermore, the doped 2D RGO and 1D CNT materials are prepared by layer-by-layer deposition using ultrasonic spray to form 3D porous electrodes. These electrodes demonstrate very high specific capacitances (62.8 mF cm-2 and 621 F g-1 at 10 mV s-1 for N-RGO/N-CNT at 1:1, v/v), high cycling stability, and structural flexibility.

KEYWORDS:

carbon nanomaterials; carbon-heteroatom bonds; energy storage systems; ultrasonic chemistry

PMID:
29119629
DOI:
10.1002/adma.201702747

Supplemental Content

Full text links

Icon for Wiley
Loading ...
Support Center