The Application of Graphene as a Support for Cathode Materials of Metal–Air Batteries

Abstract

Graphene was compared with carbon black as a conducting and catalyst-supporting material of cathodes. A single-support electrode using carbon black and binary-support electrode using carbon black and graphene were prepared. The conductivity of the electrode using graphene was measured by the standard four-probe DC measurement. As the content of graphene in the electrode was increased, the conductivity of the electrode improved. The adoption of graphene helps in the formation of a mesopore structured electrode, and it makes the catalyst widely dispersed and increases the number of reaction sites of the catalyst. As a result of leaner sweep voltammetry (LSV), the binary-support electrode using carbon black and graphene showed improved oxygen reduction reaction (ORR) compared with the single-support electrode. We concluded that graphene affected the conductivity of the electrode and the ORR characteristics as a support material.

Nano Revolution: “Tiny tech, big impact: How nanotechnology is driving SDGs progress"

“…Graphene is composed of a single layer of carbon atoms arranged in a hexagonal lattice. It is an excellent conductor of electricity and heat and possesses exceptional mechanical strength [ [32] , [33] , [34] , [35] , [36] , [37] , [38] ]. ( Fig.…”

“…9 ) and fuel cells [ 67 , 68 ]. Furthermore, nanomaterials can be employed to develop more efficient and durable versions of energy storage devices, such as batteries [ 34 , [69] , [70] , [71] ] and capacitors [ 37 , [72] , [73] , [74] ](using Nanowalls - Fig. 10 ).…”

Plasma in-liquid method for reduction of zinc oxide in zinc nanoparticle synthesis

“…Among these kinds of metals, zinc, particularly as nanoparticles, has attracted great interest due to its low equivalent weight, abundance, and high-energy density [1]. Moreover, it is also safe and environmentally friendly [2][3][4][5]. However, in the zinc air battery, a combination of high-energy density of metal anodes with atmospheric oxygen can lead to the formation of zinc oxide in large quantities [6][7][8].…”