title: High catalytic activity of nitrogen and sulfur co-doped nanoporous graphene in the hydrogen evolution reaction.
abstract: Chemical doping has been demonstrated to be an effective way to realize new functions of graphene as metal-free catalyst in energy-related electrochemical reactions. Although efficient catalysis for the oxygen reduction reaction (ORR) has been achieved with doped graphene, its performance in the hydrogen evolution reaction (HER) is rather poor. In this study we report that nitrogen and sulfur co-doping leads to high catalytic activity of nanoporous graphene in HER at low operating potential, comparable to the best Pt-free HER catalyst, 2D MoS2 . The interplay between the chemical dopants and geometric lattice defects of the nanoporous graphene plays the fundamental role in the superior HER catalysis.
authors.affiliation: WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan) http://www.wpi-aimr.tohoku.ac.jp/chen_labo/
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Ito
authors.forename: Weitao
authors.initials: W
authors.lastname: Cong
authors.forename: Takeshi
authors.initials: T
authors.lastname: Fujita
authors.forename: Zheng
authors.initials: Z
authors.lastname: Tang
authors.forename: Mingwei
authors.initials: M
authors.lastname: Chen
keywords: N/S co-doping; chemical vapor deposition; graphene; hydrogen evolution reaction