Investigation of Iron(III) Tetraphenylporphyrin as a Redox Flow Battery Anolyte: Unexpected Side Reactivity with the Electrolyte.
Investigation of Iron(III) Tetraphenylporphyrin as a Redox Flow Battery Anolyte: Unexpected Side Reactivity with the Electrolyte.
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DOI：
10.1021/acs.jpcc.3c01763
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发表时间：
2023-06-15
影响因子：
3.7
通讯作者：
Elgrishi, Noeimie
中科院分区：
文献类型：
--
作者：
Mitchell, Nathan H.;Elgrishi, Noeimie
氧化还原液流电池（RFB）提供了弥合间歇性可用的绿色能源与按需电网级能量存储的需求之间的差距的机会。虽然基于钒的水溶液氧化还原液流电池已经商业化，但是它们受到使用水作为电化学溶剂的约束的限制。非水性氧化还原液流电池系统可用于生产高电压电池，这是由于在非水性溶剂中的较大电化学窗口和通过官能化调节活性材料的氧化还原性质的能力。铁卟啉是一类有机大环化合物，由于其在非水溶剂中的光催化和电催化性能而受到广泛关注。通常，铁卟啉可以经历多个氧化还原事件，使它们成为用作不对称氧化还原液流电池中的阳极电解液或用作对称氧化还原液流电池系统中的阴极电解液和阳极电解液的令人感兴趣的候选物。在这里，Fe（III）TPP物种相关的氧化还原液流电池电解质的电化学性能进行了研究，包括溶解度，电化学性能，和充电/放电循环。通常使用的支持电解质盐可以具有除了它们在非水溶剂中的导电性之外经常被忽视的反应性。本文强调了与常见支持电解质的阳离子的寄生反应，这强调了充分评估新型RFB电解质的潜力所需的仔细平衡。
Redox flow batteries (RFBs) present an opportunity to bridge the gap between the intermittent availability of green energy sources and the need for on-demand grid level energy storage. While aqueous vanadium-based redox flow batteries have been commercialized, they are limited by the constraints of using water as an electrochemical solvent. Nonaqueous redox flow battery systems can be used to produce high voltage batteries due to the larger electrochemical window in nonaqueous solvents and the ability to tune the redox properties of active materials through functionalization. Iron porphyrins, a class of organometallic macrocycles, have been the subject of many studies for their photocatalytic and electrocatalytic properties in nonaqueous solvents. Often, iron porphyrins can undergo multiple redox events making them interesting candidates for use as anolytes in asymmetrical redox flow batteries or as both catholyte and anolyte in symmetrical redox flow battery systems. Here the electrochemical properties of Fe(III)TPP species relevant to redox flow battery electrolytes are investigated including solubility, electrochemical properties, and charge/discharge cycling. Commonly used support electrolyte salts can have reactivities that are often overlooked beyond their conductivity properties in nonaqueous solvents. Parasitic reactions with the cations of common support electrolytes are highlighted herein, which underscore the careful balance required to fully assess the potential of novel RFB electrolytes.
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DOI：
10.1073/pnas.1507063112
发表时间：
2015-06-02
影响因子：
11.1
作者：
Costentin, Cyrille;Robert, Marc;Tatin, Arnaud
通讯作者：
Tatin, Arnaud
影响因子：
9.2
作者：
Armstrong, Craig G.;Hogue, Ross W.;Toghill, Kathryn E.
通讯作者：
Toghill, Kathryn E.
影响因子：
56.9
作者：
Costentin, Cyrille;Drouet, Samuel;Saveant, Jean-Michel
通讯作者：
Saveant, Jean-Michel
影响因子：
9.2
作者：
Armstrong, Craig G.;Toghill, Kathryn E.
通讯作者：
Toghill, Kathryn E.
影响因子：
3.7
作者：
Attanayake, N. Harsha;Suduwella, T. Malsha;Odom, Susan A.
通讯作者：
Odom, Susan A.