复合抑制剂 HEC-K2SnO3 对铝空气电池中铝合金阳极/电解质界面层的协同调控

IF 5.4 3区 材料科学 Q2 CHEMISTRY, PHYSICAL
Ruqiang Zhu, Guijing Xu, Guangjie Shao and Zhenbo Wang*, 
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引用次数: 0

摘要

铝阳极在碱性电解液中的极端腐蚀反应是铝空气电池(AABs)工业化面临的最大挑战。本文提出了一种由羟乙基纤维和锡酸钾组成的复合缓蚀剂来削弱铝阳极的腐蚀反应。结果表明,加入复合缓蚀剂后,氢演化速率从 0.47 mL-cm-2-min-1 骤降至 0.08 mL-cm-2-min-1。添加了复合缓蚀剂的 AAB 的能量密度高达 3311.26 mWh-g-1,功率密度为 75.0 mW-cm-2。在含有 K2SnO3 的电解液中引入羟乙基纤维素(HEC),其丰富的 O 杂原子会通过吸附作用调整 Sn 的生长状态,从而使其均匀地沉积在铝合金阳极上。此外,HEC 中的极性羟基容易与溶液中的 Al3+ 形成有机铝盐(RO-Al),从而极大地活化铝合金阳极。综上所述,本综述阐述了 HEC、K2SnO3 和复合缓蚀剂的缓蚀机理,为后续开发简单有效的有机、无机缓蚀剂开辟了前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Synergistic Regulation of Al Alloy Anode/Electrolyte Interface Layer in Al-Air Battery by Composite Inhibitor HEC-K2SnO3

Synergistic Regulation of Al Alloy Anode/Electrolyte Interface Layer in Al-Air Battery by Composite Inhibitor HEC-K2SnO3

Synergistic Regulation of Al Alloy Anode/Electrolyte Interface Layer in Al-Air Battery by Composite Inhibitor HEC-K2SnO3

The extreme corrosion reaction of the Al anode in alkaline electrolyte is the biggest challenge for the industrialization of Al-air batteries (AABs). This article proposes a composite corrosion inhibitor composed of hydroxyethyl fiber and potassium stannate to weaken the corrosion reaction of Al anodes. The results showed that the hydrogen evolution rate suddenly decreased from 0.47 to 0.08 mL·cm–2·min–1 with the addition of composite corrosion inhibitors. The AABs with composite inhibitors exhibit a high energy density of 3311.26 mWh·g–1 and a power density of 75.0 mW·cm–2. Introducing hydroxyethyl cellulose (HEC) into an electrolyte containing K2SnO3, its rich O heteroatoms will adjust the growth state of Sn through adsorption, resulting in uniform deposition on the Al alloy anode. In addition, the polar hydroxyl groups in HEC are prone to forming organic Al salts (RO-Al) with Al3+ in solution, greatly activating the Al alloy anode. In summary, this review elaborates on the corrosion inhibition mechanisms of HEC, K2SnO3, and composite corrosion inhibitors, opening up prospects for the subsequent development of simple and effective organic, inorganic corrosion inhibitors.

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来源期刊
ACS Applied Energy Materials
ACS Applied Energy Materials Materials Science-Materials Chemistry
CiteScore
10.30
自引率
6.20%
发文量
1368
期刊介绍: ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.
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