A primary understanding of field emission from superhigh specific surface area activated carbon with interconnection structure

A primary understanding of field emission from superhigh specific surface area activated carbon with interconnection structure

In this study, activated carbon (AC) with the specific surface area up to 3152 m2 g−1 is synthetized and structural-characterized. The AC powder displays the interconnective framework structure composed of numerous carbon nanosheets and the sharp edges act as the active sites to achieve efficient el...

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Bibliographic Details
Main Authors: Chen, Jiangtao, Chen, Jianbiao, Yang, Bingjun, Zhao, Yun, Lim, Yu Dian, Li, Yan
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2022
Subjects:
Engineering::Electrical and electronic engineering
Activated Carbon
Superhigh Specific Surface Area
Online Access:https://hdl.handle.net/10356/159958
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Institution: Nanyang Technological University
Language: English
Description
Summary:In this study, activated carbon (AC) with the specific surface area up to 3152 m2 g−1 is synthetized and structural-characterized. The AC powder displays the interconnective framework structure composed of numerous carbon nanosheets and the sharp edges act as the active sites to achieve efficient electron emission. The screen-printed AC cold cathode shows large emission current density of 15 mA cm−2 under relatively low electrical field of 6.0 V μm−1, with stable emission of up to 280 min. In conjunction to its uniform emission pattern, robustness, and vacuum-compatibility test, the feasibility of AC cold cathode in field emission devices have been demonstrated. This work provides a primary understanding of field emission performance for the AC electron emitter and expands the application fields of superhigh specific surface area AC.

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