Zinc-Organic Battery with a Wide Operation-Temperature Window from -70 to 150 °C.,Angewandte Chemie International Edition

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Zinc-Organic Battery with a Wide Operation-Temperature Window from -70 to 150 °C.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-06-04 , DOI: 10.1002/anie.202005603
Nan Wang ₁ , Xiaoli Dong ₁ , Bingliang Wang ₁ , Zhaowei Guo ₁ , Zhuo Wang ₁ , Renhe Wang ₁ , Xuan Qiu ₁ , Yonggang Wang ₁

Affiliation

Aqueous zinc (Zn) batteries have been considered as promising candidates for grid‐scale energy storage. However, their cycle stability is generally limited by the structure collapse of cathode materials and dendrite formation coupled with undesired hydrogen evolution on the Zn anode. Herein we propose a zinc–organic battery with a phenanthrenequinone macrocyclic trimer (PQ‐MCT) cathode, a zinc‐foil anode, and a non‐aqueous electrolyte of a N ,N‐dimethylformamide (DMF) solution containing Zn²⁺. The non‐aqueous nature of the system and the formation of a Zn²⁺–DMF complex can efficiently eliminate undesired hydrogen evolution and dendrite growth on the Zn anode, respectively. Furthermore, the organic cathode can store Zn²⁺ ions through a reversible coordination reaction with fast kinetics. Therefore, this battery can be cycled 20 000 times with negligible capacity fading. Surprisingly, this battery can even be operated in a wide temperature range from −70 to 150 °C.

中文翻译：

锌-有机电池具有-70至150°C的宽工作温度范围。

锌（Zn）水溶液被认为是电网规模储能的有希望的候选者。然而，它们的循环稳定性通常受到阴极材料的结构塌陷和枝状晶体形成以及在锌阳极上不希望有的氢放出的限制。在这里，我们提出一种锌-有机电池，其具有菲醌大环三聚体（PQ-MCT）阴极，锌箔阳极和含有Zn ²⁺的N，N-二甲基甲酰胺（DMF）溶液的非水电解质。该系统的非水性质和Zn ²⁺ -DMF络合物的形成可以分别有效地消除不希望的氢逸出和锌阳极上的枝晶生长。此外，有机阴极可以存储Zn ²⁺离子通过具有快速动力学的可逆配位反应实现。因此，该电池可以循环2万次，而容量衰减可以忽略不计。令人惊讶的是，该电池甚至可以在-70至150°C的宽温度范围内工作。

更新日期：2020-08-10

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