Due to its versatile chemical and physical characteristics, bimetallic catalysts have received a lot of interest for a variety of uses in energy generation and environmental cleanup. These characteristics are primarily controlled by a variety of factors, including the composition of the bimetallic complexes, the technique of synthesis, and the morphostructure. As a consequence of recent developments in the field of materials chemistry, several attempts have been undertaken in this respect to build "designer" bimetallic catalysts with particular nanostructures and surface features. The development of bimetallic catalysts based on nickel for use in energy and environmental applications is highlighted in the current review in detail. A detailed description of the use of these systems in catalytic reactions related to energy production and environmental remediation is given, starting from a materials science perspective to obtain controlled morphologies and surface properties and with a focus on the fundamental understanding of these bimetallic systems to make a correlation with their catalytic behaviours.