With the development of social life, science and technology, the fossil fuels on which humans de-pend for survival are being consumed excessively. The resulting energy crisis and environmental pollution are imminent. The global energy supply and related environmental issues have become one of the biggest challenges faced by scientific and technical personnel. In response to the above problems, green energy, mainly solar energy, wind energy, biomass energy, ocean energy, geothermal energy and nuclear fusion energy, has attracted much attention. Because of its high efficiency, cleanliness, abundant reserves, high combustion calorific value (142 MJ/kg), and good continuity, hydrogen energy is considered to be a next-generation fuel with great potential to replace fossil energy. Using water splitting to produce hydrogen is an efficient way, but the smooth progress of water splitting to produce hydrogen requires the assistance of highly efficient electrocatalysts. Despite its high activity, traditional precious metal electrocatalysts have severely restricted their large-scale applications due to their lack of reserves, high cost, and poor long-term stability. Therefore, there is an urgent need to develop electrocatalysts that are efficient, cheap, stable, and can be prepared in a macroscopic manner to achieve the “hydrogen economy” blueprint. This article reviews the research progress in the field of Hydrogen Evolution Reaction (HER) in recent years.
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