The economic growth of any country depends on certain factors of which energy is a part
and even prominent. The global economy has depended heavily on fossil fuels as the main source of
reliable energy for so many decades. Their adverse long-term impact on society has led to a substantial
increase in research activities both in industry and academia. Most of the research has been dominated
by the development of green energy technologies and the expansion of such technologies in
order to meet increasing future demands of energy. Prominent among the research drive is the development
of fuel cells, whose driving force comes from hydrogen. This is because hydrogen is economical
considering its relative abundance, low cost, yet high activity in production. Materials such
as Pt, C, Fe, MoS2 have gained popularity in the production of hydrogen for use in fuel cell devices.
The high efficiency of MoS2, amorphous or crystalline, in hydrogen evolution reactions (HER) depends
on a suitable architecture that increases the exposure of its edge sites. Such architecture could
be determined by the design of catalysts in terms of proportions of molybdenum and dopant ions, the
composite structure between MoS2 and electrically conductive materials, synthesis temperature and
the synthesis method. Therefore, a review is made on recent achievements for different nanoarchitectures
of MoS2 as well as its composite structures for use as electro-catalysts in HER performance
and future prospects.
Mechanism for spontaneous oxygen and hydrogen evolution reactions on CoO nanoparticles
