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Increasing energy crisis across the globe requires immediate solutions. Two-dimensional (2D) materials are in
great significance because of its application in energy storage and conversion devices but the production process
significantly impacts the environment thereby posing a severe problem in the field of pollution control. Green synthesis
method provides an eminent way of reduction in pollutants. This article reviews the importance of green synthesis in the
energy application sector. The focus of 2D materials like graphene, MoS2, VS2 in energy storage and conversion devices
are emphasized based on supporting recent reports. The emerging Li-ion batteries are widely reviewed along with their
promising alternatives like Zn, Na, Mg batteries and are featured in detail. The impact of green methods in the energy
application field are outlined. Moreover, future outlook in the energy sector is envisioned by proposing an increase in 2D
elemental materials research.