Tsung-Wu Lin , Munusamy Sathish Kumar , Hsin-Hui Shen , Jeng-Yu Lin
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引用次数: 0
Abstract
In this study, a cost-effective, eco-friendly deep eutectic solvent (DES), comprising acetamide, sodium perchlorate, and zinc chloride serves as an innovative electrolyte for dual ion batteries. Notably, the DES exhibits a broad electrochemical stability window, self-extinguishing behavior, and great resilience in low temperatures. The interplay between the electrolyte components is being thoroughly scrutinized, with a particular focus on the benefits of adding a co-solvent to the DES. This addition prevents unwanted reactions and zinc dendrite growth through the formation of a solid electrolyte interphase (SEI) layer, ultimately leading to enhanced coulombic efficiency and cyclic stability. The electrochemical performance of zinc ion batteries (ZIBs) using a Prussian blue analog (K–MnHCFe) as cathode is being examined in the dual-ion DES electrolyte. The device displays a discharge capacity of 76.4 mAh g−1 at 0.3 A g−1 and a maximum energy density of 111.7 Wh kg−1 at a power density of 437.5 W kg−1. Furthermore, it retains 65 % of its initial specific capacity even after 3000 cycles at 0.5 A g−1. It is noteworthy that the ZIB device with dual-ion DES operates normally in temperatures as low as −20 °C, outperforming traditional cells with aqueous electrolytes.
在这项研究中,一种由乙酰胺、高氯酸钠和氯化锌组成的经济高效、环保的深共晶溶剂(DES)可作为双离子电池的创新电解质。值得注意的是,这种 DES 具有宽广的电化学稳定性窗口、自熄灭特性以及在低温条件下的高弹性。我们正在深入研究电解质成分之间的相互作用,尤其关注在 DES 中添加助溶剂的益处。这种添加物可通过形成固体电解质间相(SEI)层防止不必要的反应和锌枝晶的生长,最终提高库仑效率和循环稳定性。目前正在双离子 DES 电解质中研究使用普鲁士蓝类似物(K-MnHCFe)作为阴极的锌离子电池 (ZIB) 的电化学性能。该装置在 0.3 A g-1 条件下的放电容量为 76.4 mAh g-1,在 437.5 W kg-1 功率密度条件下的最大能量密度为 111.7 Wh kg-1。此外,即使在 0.5 A g-1 条件下循环 3000 次,它仍能保持 65% 的初始比容量。值得注意的是,带有双离子 DES 的 ZIB 设备可在低至 -20 °C 的温度下正常工作,优于使用水性电解质的传统电池。
期刊介绍:
The Journal of Power Sources is a publication catering to researchers and technologists interested in various aspects of the science, technology, and applications of electrochemical power sources. It covers original research and reviews on primary and secondary batteries, fuel cells, supercapacitors, and photo-electrochemical cells.
Topics considered include the research, development and applications of nanomaterials and novel componentry for these devices. Examples of applications of these electrochemical power sources include:
• Portable electronics
• Electric and Hybrid Electric Vehicles
• Uninterruptible Power Supply (UPS) systems
• Storage of renewable energy
• Satellites and deep space probes
• Boats and ships, drones and aircrafts
• Wearable energy storage systems