Huang Qingyou, Cao Yang, Wang Xiaohong, Tu Jinchun, Xia Qianfeng, Wu Qiang
Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine of Chinese Academy of Medical Sciences, Hainan Medical University Haikou Hainan 571199 P. R. China
Qiongtai Normal University Haikou 571127 Hainan P. R. China.
RSC Adv. 2019 Oct 29;9(60):34995-35002. doi: 10.1039/c9ra07012e. eCollection 2019 Oct 28.
As the demand for clean and renewable energy increases, high-efficiency multifunctional electrocatalysts for water cracking have become a research hotspot. In this study, a NiCoO/NiFe/Pt composite with a hierarchical structure was successfully constructed by combining a hydrothermal growth and electrodeposition method with nickel foam as the scaffold material, and its overall water cracking reaction was studied. The laminar-structured NiCoO/NiFe composite exhibits an improved number of electrochemically active sites and shorter electron transport pathways, while the Pt particles deposited on the NiCoO/NiFe composite are conducive to improve the hydrogen evolution reaction without affecting the efficiency of the oxygen evolution reaction of the intrinsic material. The NiCoO/NiFe/Pt composite shows an excellent overall water cracking performance under alkaline conditions with a current density of 10 mA cm at an applied potential of 1.45 V, indicating a promising research prospect.
随着对清洁和可再生能源需求的增加，用于水裂解的高效多功能电催化剂已成为研究热点。在本研究中，以泡沫镍为支架材料，通过水热生长和电沉积方法相结合，成功构建了具有分级结构的NiCoO/NiFe/Pt复合材料，并对其全水裂解反应进行了研究。层状结构的NiCoO/NiFe复合材料表现出更多的电化学活性位点和更短的电子传输路径，而沉积在NiCoO/NiFe复合材料上的Pt颗粒有利于改善析氢反应，同时不影响本征材料的析氧反应效率。NiCoO/NiFe/Pt复合材料在碱性条件下表现出优异的全水裂解性能，在1.45 V的外加电位下电流密度为10 mA cm，显示出广阔的研究前景。
