Thi Huong Pham , Woo-Hyuk Lee , Ji-Hae Byun , Jung-Gu Kim
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引用次数: 10
摘要
本文介绍了甘油作为一种低成本、环保的铝-空气(Al-air)电池电解质添加剂。甘油分子与水(H2O)分子形成氢键(h -键)，重构电解质中的氢键网络，导致水活性降低。因此，电解液的析氢电位被扩大，析氢反应(HER)和铝阳极的自腐蚀被抑制。结果表明，甘油的存在显著提高了铝空气电池的容量密度和能量密度。在4 M NaOH电解液中，当甘油含量为20%时，铝空气电池的容量密度为2564 mAh g−1，是4 M NaOH电解液的2.3倍。
Improving the performance of primary aluminum-air batteries through suppressing water activity by hydrogen bond-rich glycerol solvent additive
In this work, glycerol is introduced as a low-cost and eco-friendly electrolyte additive for primary aluminum-air (Al-air) battery. Glycerol molecules form hydrogen bonds (H-bonds) with water (H2O) molecules to reconstruct hydrogen bond network in the electrolyte, leading to a reduction in the H2O activity. Accordingly, the hydrogen evolution potential of electrolyte is expanded, the hydrogen evolution reaction (HER) and self-corrosion of Al anodes are suppressed. As a result, the capacity density, and energy density of Al-air battery are increased significantly in the presence of glycerol. With the glycerol content of 20% in 4 M NaOH electrolyte, the capacity density of Al-air battery exhibits a value of 2564 mAh g−1, which is 2.3 times higher than in 4 M NaOH electrolyte.
期刊介绍：
Energy Storage Materials is a global interdisciplinary journal dedicated to sharing scientific and technological advancements in materials and devices for advanced energy storage and related energy conversion, such as in metal-O2 batteries. The journal features comprehensive research articles, including full papers and short communications, as well as authoritative feature articles and reviews by leading experts in the field.
Energy Storage Materials covers a wide range of topics, including the synthesis, fabrication, structure, properties, performance, and technological applications of energy storage materials. Additionally, the journal explores strategies, policies, and developments in the field of energy storage materials and devices for sustainable energy.
Published papers are selected based on their scientific and technological significance, their ability to provide valuable new knowledge, and their relevance to the international research community.
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