关键词: 氢气, 制备, 应用, 进展

Abstract: Fossil fuels produce a large amount of carbon dioxide during use，while hydrogen energy only produces water，which is expected to replace fossil fuels and will be widely used in many fields. This paper introduces current status of hydrogen preparation and research progress in the fields of lowcarbon metallurgy，new energy vehicles，biomedicine and preparation of high-purity materials，and some development suggestions are proposed

Key words: Hydrogen, Preparation, Application, Progress