purpose is to produce maximum hydrogen gas by providing catalysts with lowest applied energy (overpotential, η). One approach to reduce the η is to provide energy in another form, like magnetic field. Here, we establish the involvement of mesoporous nanocarbon florets (NCF) based spinel Co3O4 nanocubes catalyst to increase the double layer charge transfer and decrease the charge transfer resistance in presence of magnetic field. Thus, the catalytic efficiency enhances (decrease of η by 20% and increase of j by 650%) by compacting the diffusion layer of electrode-electrolyte interface and enhancing the mass transport due to magnetization of magnetic catalyst. The unique morphology of NCF helps to sustain the magnetization after removal of the magnet due to enhancement of size due to the presence of surface magnetic catalyst. By doing the energy balance calculation it is observed that the total energy saved by using a 0.3 T magnet is 19% of its regular usage.

Magnetic field triggered and sustained enhancement of HER kinetics in alkaline medium

ACS Fall 2020 Virtual Meeting

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