Coupling regulation for achieving high-efficient UOR performance of amorphous Ni-P catalyst by pulse electrodeposition  

脉冲电沉积实现非晶态Ni-P催化剂高效UOR性能的耦合调控

作　　者：Chaoqun Pei Yuyang Qian Shuangqin Chen Jing Hu Shangshu Wu Mingjie Zhou Baoan Sun Tao Feng 裴超群;钱雨阳;陈双琴;胡晶;吴尚书;周鸣杰;孙保安;冯涛

机构地区：[1]Songshan Lake Materials Laboratory,Dongguan 523808,China [2]Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [3]Herbert Gleiter Institute of Nanoscience,School of Material Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China [4]Institute of Materials,Shanghai University,Shanghai 200444,China [5]College of Light Industry Science and Engineering,Beijing Technology and Business University,Beijing 100048,China [6]Xi’an Rare Metal Materials Institute Co.,Ltd.,Xi’an 710016,China

出　　处：《Science China Materials》2025年第3期820-829,共10页中国科学(材料科学)(英文版)

基　　金：supported by the National Key R&D Program of China(2021YFA0716302,2018YFA0703603);the Guangdong Basic and Applied Basic Research Foundation(2023A1515110145);the National Natural Science Foundation of China(52192602,52130108,62488201,52171149);the China Postdoctoral Science Foundation(2024M762276);the Fundamental Research Funds for the Central Universities(30919011404);the support by the Qing Lan project and the specially-appointed professor project of Jiangsu province.

摘　　要：The pursuit of highly efficient catalysts for the urea oxidation reaction(UOR)represents a pivotal and sustainable approach to the generation of renewable energy.Structural regulation has emerged as a particularly effective approach to achieving superior catalytic performance.However,in the realm of amorphous catalysts with disordered structure and remarkable catalytic potential,identifying effective regulation strategies to enhance the UOR performance remains a formidable yet critical challenge.In this study,we present a coupling modulation strategy based on the growth mode and pulse current,utilizing pulse electrodeposition(PED)to achieve amorphous Ni-P catalysts with high-efficiency UOR performance.Amorphous Ni/Ni-P catalyst engineered by Stranski-Krastanov(SK)growth mode along with low pulse current exhibits unprecedented catalytic activity for UOR,as evidenced by its overpotential of 1.35 V at 10 mA/cm^(2) and 1.37 V@100 mA/cm^(2).We reveal the regulation-relationship among the growth modes,catalyst structure and UOR performance by PED.We also show that low-pulse current can efficiently enhance UOR performance by elevating energy states in amorphous Ni-P,and further demonstrate the broad applicability across diverse growth modes.Therefore,by integrating film growth modes with a pulse current,we have established a novel method for significantly enhancing catalytic performance,setting the stage for the advancement of superior catalysts.追求高效的尿素氧化反应(UOR)催化剂为生成可再生能源提供了一种可持续的重要途径.现阶段,结构调控已成为实现优异催化性能的高效方法.然而,在针对具有无序结构和显著催化潜力的非晶催化剂,如何识别有效的调控策略以提高UOR性能仍然是一个严峻且关键的挑战.本项研究利用脉冲电沉积(PED)技术提出了一种基于生长模式和脉冲电流的耦合调控策略,进而实现了具备高效UOR性能的非晶态Ni-P催化剂.采用Stranski-Krastanov(SK)生长模式以及低脉冲电流的制备出的非晶态Ni/Ni-P催化剂,展现出杰出的UOR催化活性,其在10和100 mA/cm^(2)时的过电位为1.35和1.37 V.我们揭示了PED过程中生长模式、催化剂结构与UOR性能之间的调控关系.研究还表明,低脉冲电流能有效提升UOR性能,这归因于低脉冲电流可以显著提高非晶态Ni-P催化剂的能量状态,并且进一步证明了该方法在多种生长模式中的广泛普适性.因此,通过利用脉冲电沉积制备方法,将薄膜生长模式与脉冲电流相结合,我们建立了一种显著提升催化性能的新方法,为优异催化剂的进展奠定了基础.

关 键 词：metallic glass CATALYST pulsed electrodeposition structure regulation urea oxidation reaction 

分 类 号：O64[理学—物理化学]