An Ultralow Temperature Aqueous Battery with Proton Chemistry,Angewandte Chemie International Edition

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An Ultralow Temperature Aqueous Battery with Proton Chemistry
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-04-21 , DOI: 10.1002/anie.202103722
Fang Yue ₁ , Zhiwei Tie ₁ , Shenzhen Deng ₁ , Shuai Wang ₁ , Min Yang ₁ , Zhiqiang Niu ₂

Affiliation

Conventional aqueous batteries usually suffer from serious capacity loss under subzero conditions owing to the freeze of electrolytes. To realize the utilization of aqueous batteries in extremely cold climates, low-temperature aqueous battery systems have to be developed. Herein, an aqueous Pb-quinone battery based on p-chloranil/reduced graphene oxide (PCHL-rGO) in H₂SO₄ electrolyte is developed. Such aqueous Pb/PCHL-rGO batteries display H⁺ insertion chemistry, which endows the batteries with fast reaction kinetics and high rate capability. In addition, the hydrogen bonds between water molecules can be significantly damaged in electrolyte by modulating the interaction between SO₄²⁻ and water molecules, lowering the freezing point of electrolyte. As a result, the Pb/PCHL-rGO batteries deliver extraordinary electrochemical performance even at −70 °C. This work will broaden the horizons of aqueous batteries and open up new opportunities to construct low-temperature aqueous batteries.

中文翻译：

具有质子化学的超低温水系电池

由于电解质冻结，传统的水性电池在零下条件下通常会遭受严重的容量损失。为了实现在极冷气候下使用水性电池，必须开发低温水性电池系统。在此，开发了一种基于对氯苯醌/还原氧化石墨烯 (PCHL-rGO) 在 H ₂ SO ₄电解质中的水性 Pb-醌电池。这种水性 Pb/PCHL-rGO 电池显示出 H ⁺插入化学，这使电池具有快速反应动力学和高倍率能力。此外，通过调节 SO ₄^2-之间的相互作用，电解质中水分子之间的氢键会受到显着破坏。和水分子，降低电解质的凝固点。因此，即使在-70°C 下，Pb/PCHL-rGO 电池也能提供非凡的电化学性能。这项工作将拓宽水系电池的视野，为构建低温水系电池开辟新的机遇。

更新日期：2021-06-07

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