| Autor: |
Yamazaki, Kaoru, Goto, Shunsuke, Yoshino, Shunya, Gubarevich, Anna, Yoshida, Katsumi, Kato, Hideki, Yamamoto, Masanori |
| Zdroj: |
Physical Chemistry Chemical Physics (PCCP); 12/28/2023, Vol. 25 Issue 48, p32972-32978, 7p |
| Abstrakt: |
Nanoporous graphene (NPG) materials have the pronounced electrochemical stability of the seamless graphene structures developed over the 3D space. We revisited the Raman spectra of nanoporous carbons (NPCs) synthesized using -/γ-Al2O3 templates and NPGs converted from NPCs by annealing at 1800 °C to identify the type and density of defects. We found that both the NPCs and NPGs mostly consist of single-layered graphene with a few single vacancies and Stone–Wales defects. The density of vacancy defect per hexagon in the graphene sheet is estimated to be 10−2 for NPCs, while the annealing reduced the value to 10−3–10−4 for NPGs. This supports the outstanding chemical and electrochemical stability of the novel porous carbon materials. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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