|
|
|
|
|
TOKYO, June 30, 2016 - (JCN Newswire) - NEC Corporation (NEC; TSE: 6701) today announced the discovery of a new nano carbon material, the "carbon nanobrush," a fibrous aggregate of single-walled carbon nanohorns. Moreover, NEC has become the first company in the world to manufacture the carbon nanobrush. (figure 1)
 | | Figure 1. TEM images of the obtained samples.
NEC Corporation today announced the discovery of a new nano carbon material, the "carbon nanobrush," a fibrous aggregate of single-walled carbon nanohorns. Moreover, NEC has become the first company in the world to manufacture the carbon nanobrush. |
 | | Figure 2. Tips of single-walled carbon nanohorn |
 | | Figure 3. Spherical-carbon nanohorn aggregates |
Carbon nanohorns are horn-shaped (figure 2) nano carbon structures 2-5 nanometers (nm) in diameter and 40-50nm in length, which until now have been produced as radial spherical aggregates (figure 3). The newly discovered carbon nanobrush is a uniquely shaped material. It is fibrous aggregates composed of radially-assembled graphene-based single-walled nanotubules, named here as fibrous aggregates of single-walled carbon nanohorns, whose structure resembles that of a round brush (figure 1).
"The 'carbon nanobrush' is a new nano carbon material that, like existing carbon nanohorns, has high water and solvent dispersity, and high adsorptivity, including substance adsorption, but has more than 10 times the electrical conductivity than existing carbon nanohorns, an important characteristic for industrial applications," said Dr. Sumio Iijima, Senior Research Fellow, NEC Corporation. "With these characteristics, it is anticipated that the carbon nanobrush will help to improve the basic functionality of a range of devices, including increasing the speed of sensor and actuator responses, improving the output properties of batteries and capacitors, while increasing the electrical conductivity of rubber and plastic composite materials, as well as having application in a wide range of industries."
Features of the "carbon nanobrush" include the following:
1. Structure
(1) Single-walled carbon nanohorns of 2-5nm in diameter and 40-50nm in length radially gather and are connected fibrously in several micrometers.
(2) The single-walled carbon nanohorn which is a horn-shaped nano carbon structure with a large surface area radially gather and are connected fibrously in several micrometers. So it has a large surface area per unit mass (up to 1700m2/g).
2. Characteristics
(1) Dispersity
Like carbon nanohorns, the carbon nanobrush has high dispersibility, dispersing in water and organic solvents, for example. This means that it can be easily mixed with a variety of materials, making it easy to improve its characteristics as a base material.
(2) Adsorptivity
Like spherical carbon nanohorns, the carbon nanobrush can contain various substances in the nano-sized spaces inside the tubular structure, so it can be utilized as a high-performance adsorbent. When holes are formed on the surface of the carbon nanohorns by oxidation treatments, the inner space can be used, expanding the surface area by a factor of approximately five and greatly increasing adsorptivity.
(3) Electrical conductivity
As carbon nanobrush is a fibrous aggregate of radially-assembled carbon nanohorns, it has more than 10 times the electrical conductivity compared with existing spherical carbon nanohorn aggregates. As a result, they are highly effective in increasing the speed of sensor and actuator responses, increasing output properties of batteries and capacitors, and increasing the electrical conductivity of rubber and plastic composite materials.
3. Production process
Carbon nanobrush can be produced at room temperature and under atmospheric pressure using the laser ablation method where an iron-containing carbon target (mass of carbon) is irradiated by a laser with high power density. The simple production process means that they can be produced efficiently and at a low cost when compared to the cost of other nano carbon materials.
This technology was developed in part through collaborative research with the National Institute of Advanced Industrial Science and Technology (AIST).
The latest research results appear in the June 1, 2016 edition of Advanced Materials.
URL: http://dx.doi.org/10.1002/adma.201602022
Contact:
Seiichiro Toda
s-toda@cj.jp.nec.com
+81-3-3798-6511
Topic: Press release summary
Source: NEC Corporation
Sectors: Blockchain Technology
http://www.acnnewswire.com
From the Asia Corporate News Network
Copyright © 2024 ACN Newswire. All rights reserved. A division of Asia Corporate News Network.
|
|
|
|
|
|
|
| NEC Corporation |
| Apr 24, 2024 12:25 HKT/SGT |
|
NEC Develops High-speed Generative AI Large Language Models (LLM) with World-class Performance |
| Apr 22, 2024 14:09 HKT/SGT |
|
NEC Strengthens Commitment to Space Industry with Investment in Seraphim Space Venture Fund II |
| Apr 11, 2024 14:10 HKT/SGT |
|
DOCOMO, NTT, NEC and Fujitsu Develop Top-level Sub-terahertz 6G Device Capable of Ultra-high-speed 100 Gbps Transmission |
| Apr 10, 2024 12:36 HKT/SGT |
|
Transgene and NEC Present First Clinical Benefits of Neoantigen Cancer Vaccine, TG4050, in Head & Neck Cancer at AACR 2024 |
| Apr 8, 2024 12:45 HKT/SGT |
|
NEC white paper proposes comprehensive process workflow for the application of AI-driven personalized cancer vaccines |
| Mar 25, 2024 09:08 HKT/SGT |
|
NEC develops marketing strategy planning & effectiveness simulation technology using generative AI |
| Mar 22, 2024 07:38 HKT/SGT |
|
NEC and NTT successfully conduct first-of-its-kind long-distance transmission experiment over 7,000km using 12-core optical fiber |
| Mar 21, 2024 09:02 HKT/SGT |
|
NEC and Tokyo Medical and Dental University use AI to assist self-care for chronic lower back pain |
| Mar 20, 2024 14:30 HKT/SGT |
|
NEC and Skyloom to Pioneer 100 Gbps Space Optical Communications, Transforming Global Internet Connectivity |
| Mar 7, 2024 10:24 HKT/SGT |
|
NEC named to list of Top 100 Global Innovators by Clarivate for 13th consecutive year |
| More news >> |
 |
|
|
|
