作者:Yahua Liu、Marc-Antoni Goulet、Liuchuan Tong、Yazhi Liu、Yunlong Ji、Liang Wu、Roy G. Gordon、Michael J. Aziz、Zhengjin Yang、Tongwen Xu
DOI:10.1016/j.chempr.2019.04.021
日期:2019.7
integration of renewable electricity into the power grid is impeded by its intrinsic intermittency. The aqueous organic redox flow battery (AORFB) rises as a potential storage solution; however, the choice of positive electrolytes is limited, and the aqueous-soluble organic positive redox-active species reported to date have short lifetimes. Here we report a stable organic molecule for the positive terminal,
固有的间歇性阻碍了可再生能源大规模整合到电网中。水性有机氧化还原液流电池(AORFB)上升为一种潜在的存储溶液。然而,正电解质的选择受到限制,并且迄今报道的水溶性有机正氧化还原活性物质的寿命短。在这里我们报告一个稳定的有机分子的正极,4- [3-(三甲基氨)丙氧基] -2,2,6,6-四甲基哌啶-1-氧基(TMAP-TEMPO)氯化物,表现出高(4.62 M)的水溶液溶解度。当在实际的AORFB中针对包含BTMAP-紫精的负电解质在中性pH下操作时,流通池显示的开路电压为1.1伏,库仑效率> 99.73%。容量保持率是迄今报道的全有机AORFB中最高的,在1000个连续循环中每个循环的99.993%;每小时容量的0.026%的暂时容量衰减率与浓度无关。