Molecular Engineering Strategies for Symmetric Aqueous Organic Redox Flow Batteries,ACS Applied Energy Materials

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Molecular Engineering Strategies for Symmetric Aqueous Organic Redox Flow Batteries
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2020-02-07 00:00:00 , DOI: 10.1021/acsmaterialslett.0c00028
Rocco Peter Fornari ₁ , Murat Mesta ₁ , Johan Hjelm ₁ , Tejs Vegge ₁ , Piotr de Silva ₁

Affiliation

Symmetric aqueous organic redox flow batteries (RFBs) are potentially an inexpensive, durable, and safe energy storage technology. Unlike normal asymmetric flow batteries, they are based on electrolytes that exist in at least three oxidation states and can undergo a minimum of two distinct redox processes. We compute the redox potentials of selected electrolytes, with the intent to understand how the interaction between the redox units affects the potentials. We find that electronic interaction between redox units and intramolecular hydrogen bonding can be exploited to tune the difference between the redox potentials, i.e., the theoretical voltage of the battery. The redox potentials can be further fine-tuned in either direction by adding substituents. Starting from these observations, we formulate a set of rules that will help in finding ideal candidates for symmetric RFBs.

中文翻译：

对称水性有机氧化还原液流电池的分子工程策略

对称水性有机氧化还原液流电池（RFB）可能是一种廉价，耐用且安全的储能技术。与普通的不对称液流电池不同，它们基于以至少三种氧化态存在的电解质，并且可以经历至少两个不同的氧化还原过程。我们计算选定电解质的氧化还原电势，旨在了解氧化还原单元之间的相互作用如何影响电势。我们发现，可以利用氧化还原单元与分子内氢键之间的电子相互作用来调节氧化还原电势之间的差异，即电池的理论电压。通过添加取代基，可以在任一方向上进一步微调氧化还原电势。从这些观察开始，

更新日期：2020-02-07

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