|
|
|
|
|
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 © 2025 ACN Newswire. All rights reserved. A division of Asia Corporate News Network.
|
|
|
|
|
|
|
| NEC Corporation |
| Apr 9, 2025 10:09 HKT/SGT |
|
NEC Face Recognition Ranks First in NIST Accuracy Testing |
| Apr 8, 2025 15:42 HKT/SGT |
|
NEC Orchestrating Future Fund invests in Rescale, Inc., provider of a leading digital engineering platform for cloud high-performance computing (HPC) |
| Apr 8, 2025 15:11 HKT/SGT |
|
SITA and NEC Collaborate to Drive Global Adoption of Digital Identities in Travel |
| Apr 1, 2025 15:15 HKT/SGT |
|
NEC has developed technologies that enable a secure workflow for personalized cancer vaccines and has proven their capabilities |
| Mar 28, 2025 12:08 HKT/SGT |
|
NEC and COEDO Brewery develop the second edition of "The taste of life created by brewers and AI -- Agentic AI x Craft Beer" |
| Mar 26, 2025 13:41 HKT/SGT |
|
NEC provides 25G tunable SFP extended reach optical transceiver |
| Mar 25, 2025 16:14 HKT/SGT |
|
NEC receives order for walkthrough gates leveraging face recognition technology to facilitate more seamless airport arrival and departure procedures |
| Mar 25, 2025 15:40 HKT/SGT |
|
NTT, DOCOMO and NEC Demonstrate World's Fastest 140 Gbps Bidirectional Wireless Transmission in 80 GHz Band |
| Mar 10, 2025 11:10 HKT/SGT |
|
CEPI funds Nagasaki University to develop innovative vaccines using Nanoball platform and NEC's AI |
| Mar 6, 2025 12:20 HKT/SGT |
|
NEC improves the energy efficiency and floor space density of 5G Mobile Core systems |
| More news >> |
 |
|
|
|
