| 2 | High performance of zinc-ferrum redox flow battery with Ac^-/HAc buffer solution显示文摘A green low-cost redox flow battery using Zn/Zn^(2+) redox couple in HAc/NaAc medium and Fe^(2+)/Fe^(3+) redox couple in H_2SO_4 medium was first proposed and investigated for potential stationary energy storage applications. The presence of HAc/NaAc in the negative electrolyte can keep the pH between 2.0 and 6.0even when a large amount of H^+ ions move into negative electrolyte from positive electrolyte through ion exchange membrane. In the pH range of 2.0–6.0, the chemical reaction of Zn species with H^+ species is very insignificant; furthermore, the electroreduction of H^+ ion on the negative electrode is significantly suppressed at this pH range. The zinc-ferrum redox flow battery(Zn/Fe RFB) operated within a voltage window of 0.5–2.0 V with a nearly 90% utilization ratio, and its energy efficiency is around 71.1% at room temperature. These results show that Zn/Fe RFB is a promising option as a stationary energy storage equipment. | Zhipeng Xie Qi Su Anhong Shi Bin Yang Baixiong Liu Jianchai Chen Xiaochun Zhou Dingjian Cai Liang Yang | 2016 | Journal of Energy Chemistry2016，25，3： | 1 |
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