Metallic transition-metal dichalcogenide (TMDC) nanomaterials have emerged as highly active and robust catalysts for energy conversion from renewable electricity or solar energy to fuels via electrochemical or solar-driven water-splitting technologies. Possessing intriguing electronic and catalytic properties, this category of materials based on earth-abundant elements is increasingly being explored and developed for practical applications. This review provides in-depth insights into recent progress regarding electrocatalysis and photocatalysis using metallic TMDC nanomaterials. After the introduction and fundamental illustration of the structures and extraordinary properties, we discuss the significant developments in synthetic methodologies and energy conversion applications with significant strategies for enhancing catalytic performance. Several personal perspectives on the opportunities and challenges in this promising realm are discussed in the conclusion.

金属过渡金属二硫化碳（TMDC）纳米材料已成为高活性和坚固的催化剂，可通过电化学或太阳能驱动的水分解技术将能量从可再生电力或太阳能转化为燃料。具有令人着迷的电子和催化性能，这种基于地球丰富元素的材料正被越来越多地研究和开发用于实际应用。这篇综述提供了有关使用金属TMDC纳米材料进行电催化和光催化的最新进展的深入见解。在介绍了结构和非凡性能并对其进行了基本说明之后，我们讨论了合成方法学和能量转换应用的重大进展，并提出了增强催化性能的重要策略。