New Mn Electrochemistry for Rechargeable Aqueous Batteries: Promising Directions Based on Preliminary Results

IF 13 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Hyungjin Lee, Amey Nimkar, Hyeonjun Lee, Netanel Shpigel, Daniel Sharon, Seung-Tae Hong, Munseok S. Chae
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Abstract

Aqueous batteries with metal anodes exhibit robust anodic capacities, but their energy densities are low because of the limited potential stabilities of aqueous electrolyte solutions. Current metal options, such as Zn and Al, pose a dilemma: Zn lacks a sufficiently low redox potential, whereas Al tends to be strongly oxidized in aqueous environments. Our investigation introduces a novel rechargeable aqueous battery system based on Mn as the anode. We examine the effects of anions, electrolyte concentration, and diverse cathode chemistries. Notably, the ClO4-based electrolyte solution exhibits improved deposition and dissolution efficiencies. Although stainless steel (SS 316 L) and Ni are stable current collectors for cathodes, they display limitations as anodes. However, using Ti as the anode resulted in increased Mn deposition and dissolution efficiencies. Moreover, we evaluate this system using various cathode materials, including Mn-intercalation-based inorganic (Ag0.33V2O5) and organic (perylenetetracarboxylic dianhydride) cathodes and an anion-intercalation-chemistry (coronene)-based cathode. These configurations yield markedly higher output potentials compared to those of Zn metal batteries, highlighting the potential for an augmented energy density when using an Mn anode. This study outlines a systematic approach for use in optimizing metal anodes in Mn metal batteries, unlocking novel prospects for Mn-based batteries with diverse cathode chemistries.

Abstract Image

可充电水电池的新型锰电化学:基于初步结果的前景看好的方向
使用金属阳极的水电池具有强大的阳极容量,但由于水电解质溶液的电位稳定性有限,因此能量密度较低。目前的金属选择(如锌和铝)带来了一个难题:锌缺乏足够低的氧化还原电位,而铝在水环境中往往会被强烈氧化。我们的研究引入了一种以锰为阳极的新型可充电水电池系统。我们研究了阴离子、电解质浓度和不同阴极化学成分的影响。值得注意的是,基于 ClO4 的电解质溶液显示出更高的沉积和溶解效率。虽然不锈钢(SS 316 L)和镍作为阴极是稳定的电流收集器,但作为阳极却有局限性。然而,使用钛作为阳极可提高锰的沉积和溶解效率。此外,我们还使用各种阴极材料对该系统进行了评估,包括基于锰电位叠加的无机阴极(Ag0.33V2O5)和有机阴极(过四羧酸二酐),以及基于阴离子电位叠加化学的阴极(冠烯)。与锌金属电池相比,这些配置产生的输出电位明显更高,突出了使用锰阳极提高能量密度的潜力。本研究概述了用于优化锰金属电池中金属阳极的系统方法,为具有不同阴极化学成分的锰基电池开辟了新的前景。
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来源期刊
Energy & Environmental Materials
Energy & Environmental Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
17.60
自引率
6.00%
发文量
66
期刊介绍: Energy & Environmental Materials (EEM) is an international journal published by Zhengzhou University in collaboration with John Wiley & Sons, Inc. The journal aims to publish high quality research related to materials for energy harvesting, conversion, storage, and transport, as well as for creating a cleaner environment. EEM welcomes research work of significant general interest that has a high impact on society-relevant technological advances. The scope of the journal is intentionally broad, recognizing the complexity of issues and challenges related to energy and environmental materials. Therefore, interdisciplinary work across basic science and engineering disciplines is particularly encouraged. The areas covered by the journal include, but are not limited to, materials and composites for photovoltaics and photoelectrochemistry, bioprocessing, batteries, fuel cells, supercapacitors, clean air, and devices with multifunctionality. The readership of the journal includes chemical, physical, biological, materials, and environmental scientists and engineers from academia, industry, and policy-making.
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