Abstract
The development of electrode materials for energy storage is an important request for providing novel active materials. Co-precipitation synthesized nanostructured magnesium zinc molybdate (Mg-Zn-Mo-O) along with graphitic carbon nitride (g-C3N4) and carbon quantum dot (CQD) form ternary nanocomposite for applying in the hydrogen storage systems in terms of electrochemical storage mechanism. Carbon quantum dot materials produce by a novel natural source of Salix aegyptiaca through the green synthesis method. The ternary nanocomposites of Mg-Zn-Mo-O/g-C3N4 /CQD apply as hydrogen storage material and compare with binary nanocomposites of Mg-Zn-Mo-O/g-C3N4 and Mg-Zn-Mo-O/CQD in the electrochemical charge-discharge chronopotentiometry tests. The resultant discharge profiles show the maximum capacity of 202 mA h g−1 after 15 cycles for Mg-Zn-Mo-O/g-C3N4 /CQD composites while the maximum capacity for Mg-Zn-Mo-O/g-C3N4 and Mg-Zn-Mo-O/CQD is 250 and 162 mA h g−1. The capacity of pure Mg-Zn-Mo-O nanoparticles is 112 mA h g−1. Therefore, the resultant ternary nanocomposites are promising active materials for hydrogen storage application.
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