課題番号 ：S-16-KU-0054
利用形態 ：機器利用
利用課題名（日本語） ：ナノ構造を持つ多孔質物質およびナノシートの構造解析
Program Title (English) ：Structural analyses of nanostructured porous materials and nanosheets
利用者名（日本語） ：ラジェシュ マデュ1)2), 宮元 展義1) , 山本 伸也1)
Username (English) ：Rajesh Madhu1)2), Nobuyoshi Miyamoto1), Shinya Yamamoto1)
所属名（日本語） ：1) 福岡工業大学, 2)日本学術振興会
Affiliation (English) ：1) Fukuoka Institute of Technology, 2)JSPS

１．概要（Summary ）
The preparation of two-dimensional (2D) porous graphitic carbon is imperative to overcome the various difficulties such as low specific capacitance with low energy density and poor electronic conductivity. Since, the 2D porous graphitized carbons possess a large specific surface area with tunable pore size, which can easily access the electrolyte with short diffusion length and lower resistance paths for the efficient electron transportation. In evidence, the 2D carbon-based materials were possessed excellent capacitive performance with improved electronic conductivity and higher energy density. Fascinatingly, this is the first report for the synthesis of hollow carbon rings from Lignin with high surface area and large pore volume.

２．実験（Experimental）
The as-synthesized carbon samples were characterized by a SEM, TEM, and XPS and CV.

３．結果と考察（Results and Discussion）
We examined the carbon samples by TEM analysis and the magnified images are displayed in Fig. 1. As can be seen, the carbon-silica core shell and silica removed carbon hollow spheres, washed with NaOH. The results revealed that the hollow spheres were etched successfully with a thin carbon rings (5-10 nm).

Fig.1 shows the carbon-SiO2 core shell nanoparticles and carbon hollow capsules etched with HF or NaOH.

４．その他・特記事項（Others）
We express our sincere thanks to Prof. Fujigaya for his kind assistance during the experiments.

５．論文・学会発表（Publication/Presentation）
None

６．関連特許（Patent）
None