Electrolyzers for green hydrogen generation and their integration with fuel cells
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https://orcid.org/0000-0002-5984-3745
Yashesh Vijay Rajyaguru Aditi Pandey Manjunatha C
Abstract
Recent climate changes and related cataclysmic events have alerted mankind about the severity of the now considered imminent global catastrophe. Countries around the world are forced to solve these major socio-economic issues namely reduction of greenhouse gas emissions, establishing energy security, improving the quality of life, etc. all this while meeting the ever-increasing demands in energy consumption. However, this adversity has pushed countries towards adopting a greener approach in their energy infrastructure and has opened up avenues for science enthusiasts to come up with clean, green, and sustainable technologies to quench this energy hunger. One such potential alternative to detrimentally impacting conventional fossil fuels is hydrogen. It can fulfil the energy requirement for all sorts of applications without adversely impacting the environment [1].
A lot of research is being directed towards clean and green hydrogen generation [1]. Hydrogen generated by the electrolysis of water powered by a renewable energy source can be termed Green Hydrogen. Green hydrogen is completely free of carbon and does not release potent greenhouse gases during its production [2]. Green hydrogen has been in talks for a while and it is time to explore its potentiality and shortcomings to develop a clear picture moving forward in the field of sustainability. Figure 1A illustrates how green hydrogen could be produced from a renewable energy source through electrolysis.
In this review, an attempt is made to elucidate the capabilities and limitations of green hydrogen production using electrolyzers powered by a renewable energy source and then further using that hydrogen to power a fuel cell. This field of study is yet to be explored and hence, there is a dire need for a review article that enables and facilitates researchers to come up with innovative solutions.
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