J-STAGE Data
Browse
1/1
2 files

Single-step Synthesis of Highly Porous Nitrogen-doped Carbon by Solid–gas Mechanochemical Treatment as an Oxygen Reduction Electrocatalyst (Supporting Information)

dataset
posted on 2023-10-26, 05:28 authored by Naoki TACHIBANA, Hiromasa NAMIKI, Shoichi SOMEKAWA

Herein, we report a single-step mechanochemical synthesis of highly porous nitrogen-doped carbon and its electrocatalytic oxygen reduction activity. X-ray diffraction and X-ray photoelectron spectroscopy measurements revealed that solid–gas mechanochemical treatment (MT) using a planetary ball mill cleaved the C–C bonds in carbon black (CB) and simultaneously incorporated nitrogen atoms with a high proportion of quaternary N into the carbon network. MT at a milling speed of 600 rpm yielded nitrogen-doped porous carbon (N-PC) with an optimal combination of nitrogen content of 2.20 at% and surface area of 516 m2 g−1, which is 10 times larger than that of CB (51.1 m2 g−1). Owing to the high nitrogen content and large surface area, N-PC synthesized by MT at a milling speed of 600 rpm exhibited higher oxygen reduction activity than N-PC synthesized by MT at a milling speed of 800 rpm and porous carbon synthesized by MT at a milling speed of 300 rpm.

Funding

Japan Society for the Promotion of Science

History

Corresponding author email address

tachibana.naoki@iri-tokyo.jp

Copyright

© 2023 The Author(s).

Usage metrics

    Electrochemistry

    Categories

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC