Work

Effect of synthesis route of graphene on the hydrogen storage in Mg-Ni-rGO ternary system

Year: 2024

Type: article

Abstract: The H uptake/release performance of Mg is studied by combining transition metal (Ni) and lightweight C-based (rGO) catalysts. Further, the effect of the synthesis route on the morphology and catalytic ability of rGO is understood by synthesizing it via electrochemical (erGO), chemical (crGO) and thermal (trGO) exfoliation. These rGOs (10 wt%) and 3 atom% of Ni were ball-milled with Mg and subjected to isothermal H uptake at 15 bar and 320 °C. The Mg 97 -Ni 03 -erGO nanocomposite shows the lowest incubation period of 2–3 h, whereas it is 8–9 h for Mg 97 -Ni 03 -trGO. Moreover, the Mg 97 -Ni 03 -erGO nanocomposite shows the lowest onset temperature of H release at 275 °C, which is 300 °C in the case of Mg 97 -Ni 03 -trGO. From the spectroscopic analysis, it is inferred that the presence of lower defects in erGO and higher C–C sp 2 domains facilitate enhanced Mg–C interaction during the H uptake/release.

Source: International Journal of Hydrogen Energy

DOI: 10.1016/j.ijhydene.2024.11.458

Authors: Srikanta Panda, Marla V.V. Satya Aditya, Sanket Kutiyar, Sankara Sarma V. Tatiparti

Language: English

Topic: Hydrogen Storage and Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $3,400

Funders: Department of Science and Technology, Ministry of Science and Technology, India, Indian Institute of Technology Bombay, Science and Engineering Research Board