AGHAJANI, Hossein, Arvin Taghizadeh TABRIZI, Reza GHORBANI, Sahand BEHRANGI, Monika STUPAVSKÁ and Nesa ABDIAN. Evaluation of electrochemical hydrogen storage capability of three-dimensional nano-structured nitrogen-doped graphene. Journal of Alloys and Compounds. Elsevier, 2022, vol. 906, June, p. 1-8. ISSN 0925-8388. Available from: https://dx.doi.org/10.1016/j.jallcom.2022.164284.
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Basic information
Original name Evaluation of electrochemical hydrogen storage capability of three-dimensional nano-structured nitrogen-doped graphene
Authors AGHAJANI, Hossein, Arvin Taghizadeh TABRIZI, Reza GHORBANI, Sahand BEHRANGI (364 Islamic Republic of Iran, belonging to the institution), Monika STUPAVSKÁ (703 Slovakia, belonging to the institution) and Nesa ABDIAN.
Edition Journal of Alloys and Compounds, Elsevier, 2022, 0925-8388.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10305 Fluids and plasma physics
Country of publisher Switzerland
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 6.200
RIV identification code RIV/00216224:14310/22:00125931
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1016/j.jallcom.2022.164284
UT WoS 000779660700004
Keywords in English N-doped Graphene Foam; Hydrogen Storage; Electrochemical Impedance Spectroscopy; Nanostructure; XPS
Tags rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Marie Šípková, DiS., učo 437722. Changed: 3/6/2022 13:38.
Abstract
In this work, nitrogen-doped graphene foam was synthesized by using hydrothermal routes. In the first step, graphene was synthesized by utilizing a modified Hummer's method and nitrogen-doped graphene foam was then synthesized at 180 °C by using an ammonia and graphene solution for 12 h. X-ray photon spectroscopy (XPS) was applied to determine the extent of doping by nitrogen on the graphene foam; three N-peaks were observed at 398.25, 399.69, and 401.46 eV, and XPS also showed that 6 at% of the synthesized graphene foam consisted of nitrogen atoms. The capability of this foam to absorb hydrogen was evaluated in a 6 M KOH solution through electrochemical impedance spectroscopy (EIS), galvanostatic charge/discharge, and cyclic voltammetry (CV) analysis. The hydrogen storage capacity of the achieved N-doped GF, showing the value of 1916.5 mAh.g−1 significantly improved in comparison to that of pure graphene in previous work, due to the increasing electronegative sites at the surface of the graphene foam.
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