System Energy and Efficiency Analysis of 12.5 W VRFB with Different Flow Rates

Vanadium redox flow battery(VRFB)is considered one of the most potential large-scale energy storage technolo-gies in the future,and its electrolyte flow rate is an important factor affecting the performance of VRFB.To study the effect of electrolyte flow rate on the performance of VRFB,the hydrodynamic model is established and a VRFB system is developed.The results show that under constant current density,with the increase of electrolyte flow rate,not only the coulombic efficiency,energy efficiency,and voltage efficiency will increase,but also the capacity and energy discharged by VRFB will also increase.But on the other hand,as the flow rate increases,the power of the pump also increases,resulting in a decrease in system efficiency.The energy discharged by the system does not increase with the increase in flow rate.Considering the balance between efficiency and pump power loss,it is experimentally proved that 120 mL·min-1 is the optimal working flow rate of the VRFB system,which can maximize the battery performance and discharge more energy.

Silicon-plus photonics

因为他们与成熟互补金属氧化物半导体技术的相容性，硅 photonics 变得很流行。然而，纯硅仍然是很困难的被利用获得各种各样的 photonic 为大规模 photonic 集成的功能的设备由于内在的性质。硅正的 photonics，哪个 pluses 打破硅的限制的另外的材料，当前并且以后正在起一个很重要的作用。在这份报纸，我们给 siliconplus 的进步上的评论和讨论 photonics，包括结构。