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Rechargeable organic–air redox flow batteries†
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2018-08-03 00:00:00 , DOI: 10.1039/c8se00205c P. Leung 1, 2, 3, 4 , D. Aili 5, 6, 7 , Q. Xu 8, 9, 10, 11 , A. Rodchanarowan 12, 13, 14, 15, 16 , A. A. Shah 4, 17, 18, 19
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2018-08-03 00:00:00 , DOI: 10.1039/c8se00205c P. Leung 1, 2, 3, 4 , D. Aili 5, 6, 7 , Q. Xu 8, 9, 10, 11 , A. Rodchanarowan 12, 13, 14, 15, 16 , A. A. Shah 4, 17, 18, 19
Affiliation
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A rechargeable organic–air flow battery based on aqueous electrolytes is proposed and tests are conducted in a divided cell with a three-electrode configuration. Quinoxaline is used as the negative redox couple due to its low electrode potential of c.a. −0.9 V vs. Hg|HgO in aqueous electrolytes. High-surface-area nickel mesh and manganese-dioxide electrodes were employed for oxygen evolution and reduction, respectively, together with a low-cost hydroxide doped polybenzimidazole (m-PBI) separator (c.a. 20 μm). In typical alkaline electrolytes (2 M NaOH), the open-circuit voltage of the flow battery was c.a. 0.95 V, which is comparable to existing organic-based batteries. The average charge and discharge cell voltage ranges at 5–10 mA cm−2 were 1.7–1.95 V and 0.4–0.7 V, respectively. Despite using low-cost materials, average coulombic and energy efficiencies of the batteries were c.a. 81 and 25%, respectively, at 7.5 mA cm−2 over 20 cycles.
中文翻译：
可充电有机空气还原液流电池†
提出了一种基于水性电解质的可充电有机空气流通电池，并在具有三电极配置的分隔式电池中进行了测试。喹喔啉由于其在水性电解质中的低电极电位（相对于Hg | HgO而言约为ca -0.9 V）而被用作负氧化还原对。高表面积镍网和二氧化锰电极分别用于氧气的释放和还原，以及低成本的氢氧化物掺杂的聚苯并咪唑（m -PBI）隔膜（约20μm）。在典型的碱性电解液（2M NaOH）中，液流电池的开路电压为CA0.95 V，与现有的有机电池相当。5-10 mA cm -2的平均充电和放电单元电压范围分别为1.7-1.95 V和0.4-0.7V。尽管使用低成本材料，但是在20个循环中，在7.5 mA cm -2时，电池的平均库伦效率和能量效率分别约为81％和25％。
更新日期：2018-08-03
中文翻译：
可充电有机空气还原液流电池†
提出了一种基于水性电解质的可充电有机空气流通电池，并在具有三电极配置的分隔式电池中进行了测试。喹喔啉由于其在水性电解质中的低电极电位（相对于Hg | HgO而言约为ca -0.9 V）而被用作负氧化还原对。高表面积镍网和二氧化锰电极分别用于氧气的释放和还原，以及低成本的氢氧化物掺杂的聚苯并咪唑（m -PBI）隔膜（约20μm）。在典型的碱性电解液（2M NaOH）中，液流电池的开路电压为CA0.95 V，与现有的有机电池相当。5-10 mA cm -2的平均充电和放电单元电压范围分别为1.7-1.95 V和0.4-0.7V。尽管使用低成本材料，但是在20个循环中，在7.5 mA cm -2时，电池的平均库伦效率和能量效率分别约为81％和25％。
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