Organic Functionalization of Polyoxovanadate–Alkoxide Clusters: Improving the Solubility of Multimetallic Charge Carriers for Nonaqueous Redox Flow Batteries
作者:Lauren E. VanGelder、Brittney E. Petel、Olaf Nachtigall、Gabriel Martinez、William W. Brennessel、Ellen M. Matson
DOI:10.1002/cssc.201802029
日期:2018.12.11
The success of nonaqueous redox flow battery technology requires synthetic advances in charge carrier design to increase compatibility with organic solvents. Herein, previous discoveries related to the development of multimetallic charge carriers are built upon with the high‐yielding syntheses of ether‐ functionalized polyoxovanadate–alkoxide clusters, [V6O7(OR)9(OCH2)3CR′] (R=CH3, C2H5; R′=CH3, CH2OCH3
非水氧化还原液流电池技术的成功需要电荷载体设计方面的综合进步,以提高与有机溶剂的相容性。在此,以前有关多金属电荷载流子发展的发现是建立在醚官能化聚氧钒酸盐-醇盐簇[V 6 O 7(OR)9(OCH 2)3 CR']的高产合成基础上的(R = CH 3,C 2 H 5; R'= CH 3,CH 2 OCH 3,CH 2 OC 2 H 4 OCH 3)。就像他们的同源同源物[V6 O 7(OR)12 ](R = CH 3,C 2 H 5),这些簇表现出四个氧化还原事件,跨越两个伏特窗口,并显示出快速的电子转移动力学。在对称充电示意图中,乙醇氧化物衍生物可以在每个电极上可逆地循环两个电子,证明了其长期的溶液稳定性。此外,醚官能化使溶解度增加十二倍,这是直接决定氧化还原液流电池能量密度的因素。