Ocean University of China

About: Ocean University of China is a education organization based out in Qingdao, China. It is known for research contribution in the topics: Population & Sea surface temperature. The organization has 27604 authors who have published 27886 publications receiving 440181 citations. The organization is also known as: Zhōngguó Hǎiyáng Dàxué & OUC.

An extreme internal solitary wave event observed in the northern South China Sea.

Abstract: With characteristics of large amplitude and strong current, internal solitary wave (ISW) is a major hazard to marine engineering and submarine navigation; it also has significant impacts on marine ecosystems and fishery activity. Among the world oceans, ISWs are particular active in the northern South China Sea (SCS). In this spirit, the SCS Internal Wave Experiment has been conducted since March 2010 using subsurface mooring array. Here, we report an extreme ISW captured on 4 December 2013 with a maximum amplitude of 240 m and a peak westward current velocity of 2.55 m/s. To the authors’ best knowledge, this is the strongest ISW of the world oceans on record. Full-depth measurements also revealed notable impacts of the extreme ISW on deep-ocean currents and thermal structures. Concurrent mooring measurements near Batan Island showed that the powerful semidiurnal internal tide generation in the Luzon Strait was likely responsible for the occurrence of the extreme ISW event. Based on the HYCOM data-assimilation product, we speculate that the strong stratification around Batan Island related to the strengthening Kuroshio may have contributed to the formation of the extreme ISW.

Construction of Hollow Cobalt–Nickel Phosphate Nanocages through a Controllable Etching Strategy for High Supercapacitor Performances

Abstract: Bimetal phosphates, especially those with hollow structures, have been recognized as promising materials for energy storage application. However, research on hollow bimetal phosphates is quite rare because of the difficulty in controlling the preparation process. In this work, through a shell-coating and then controllable etching process, a nonspherical hollow bimetal (Co/Ni) phosphate nanocage (named ZIF-67-LDH-CNP-110) is successfully constructed for the first time, to the best of our knowledge. When utilized as an electrode material for supercapacitor application, the as-prepared nanocages exhibit a high specific capacitance of 1616 F g–1 at 1 A g–1 and excellent ratio capability of remaining 80.32% of initial capacitance at a high current density of 10 A g–1. In addition, the as-fabricated ZIF-67-LDH–CNP-110//AC hybrid supercapacitor presents a remarkable energy density of 33.29 Wh kg–1 at a power density of 0.15 kW kg–1.