Core Insights - The research team led by Professor Xiong Yujie from Anhui Normal University, in collaboration with the University of Science and Technology of China, has successfully created sub-nanometer high-entropy alloys using laser irradiation, which can incorporate up to ten different metal elements [1][2] - This innovative method overcomes traditional high-temperature synthesis limitations, allowing for the production of high-entropy alloys at milder conditions and achieving smaller particle sizes [1] Group 1: Research Methodology - The team utilized laser irradiation technology to achieve uniform mixing of multiple metals under mild conditions, resulting in the production of sub-nanometer high-entropy alloy particles [1] - The nanosecond pulsed laser rapidly increases the surface temperature of the particles to over 2000 degrees Celsius and then cools them at a rate exceeding one billion degrees per second, enabling precise control over particle size [1] Group 2: Applications and Performance - High-entropy alloys exhibit significant potential in the renewable energy sector, particularly as ideal catalyst materials due to their unique structure and properties [2] - The sub-nanometer high-entropy alloy composed of gold, platinum, ruthenium, rhodium, and iridium demonstrates exceptional catalytic activity and stability in hydrogen production through water electrolysis, outperforming current commercial platinum-carbon and ruthenium dioxide catalysts [2] - The new laser synthesis method greatly expands the material system and applicability of high-entropy alloys, potentially advancing their practical applications in energy and catalysis [2]

中新网合肥10月19日电 (记者 吴兰)记者19日从安徽师范大学获悉，该校校长熊宇杰教授与联合团队利 用激光辐照所产生的效应，实现了亚纳米级高熵合金的创制。 据介绍，该方法具有广泛的普适性，可制备含有多达十种金属元素的亚纳米级高熵合金。相关研究成果 近日发表在《自然·材料》(Nature Materials)上。 科研团队创新性地使用了激光辐照技术，在温和条件下实现了多种金属的均匀混合，并成功制备出亚纳 米级别的高熵合金颗粒。纳秒脉冲激光可以在极短时间内将颗粒表面温度迅速提升至2000摄氏度以上， 再以每秒超过十亿度的速度迅速冷却。这一快热快冷的过程，突破了传统合成方法的限制，不仅让不同 金属元素均匀分散并合金化，还可以实现颗粒尺寸的微小化。 高熵合金在多个领域，尤其是新能源方面，展现出广阔的应用前景，是一种极具潜力的催化剂材料。而 这种新型激光合成方法大大拓宽了高熵合金的材料选择范围，有望推动其在更多关键领域的实际应用。 熊宇杰解释说："高熵合金就像一个团队，每种金属元素就像团队中的成员，各有所长。在执行任务 时，每个人做自己最擅长的事；而且在一起还可以做各自做不了的事，整个团队的效率自然大大提 高。"据介 ...