Ionics ( IF 2.8 ) Pub Date : 2020-06-16 , DOI: 10.1007/s11581-020-03618-1 Sha Yu , Xuetao Yang , Yong Liu , Faqi Zhan , Qiyu Wen , Jie Li , Wenzhang Li
Aluminum (Al) is the desired material for metal-air batteries, owing to its attractive electrochemical performance. Unfortunately, the actual power densities of the batteries are relatively low. This research describes a high power density Al-air battery equipped with commercial three-dimensional (3D) Al foam as the anode coupled with dual cathodes in NaOH electrolyte. The corrosion responses and electrochemical performances of the 3D Al foam are investigated in 1, 2, and 4 mol L−1 NaOH solutions. Compared with the dense Al plate, the Al foam owns better electrochemical performances in 4 mol L−1 NaOH solution. The peak power density of the Al foam (80.6 mW cm−2) increases by ~ 56.84%, relative to the Al plate (51.2 mW cm−2). At 100 mA cm−2, the capacity density of Al foam reaches 1983 mAh g−1, and the energy density comes to 1567 Wh Kg−1. Considering the cost and performance, the commercial 3D Al foam anode with a large specific surface and small electrode polarization is expected to be a promising anode material for the Al-air batteries.
中文翻译:
具有商业三维泡沫铝阳极的高功率密度铝空气电池
铝(Al)由于具有诱人的电化学性能,因此是用于金属空气电池的理想材料。不幸的是,电池的实际功率密度相对较低。这项研究描述了一种高功率密度的铝空气电池,该电池配备了商用三维(3D)铝泡沫作为阳极,并在NaOH电解质中与双阴极耦合。在1、2和4 mol L -1 NaOH溶液中研究了3D Al泡沫的腐蚀响应和电化学性能。与致密的铝板相比,铝泡沫在4 mol L -1 NaOH溶液中具有更好的电化学性能。相对于铝板(51.2 mW cm -2),泡沫铝的峰值功率密度(80.6 mW cm -2)增加了〜56.84%)。在100mA cm -2时,Al泡沫的容量密度达到1983mAh g -1,并且能量密度达到1567 Wh Kg -1。考虑到成本和性能,具有较大比表面积和小的电极极化的商业3D Al泡沫阳极有望成为有希望的Al-空气电池阳极材料。