Regulating the Anode Corrosion by a Tryptophan Derivative for Alkaline Al–Air Batteries

IF 3.7 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Yue Huang, Lei Guo*, Qiao Zhang, Wei Shi*, Wei Feng, Faheem Abbas, Xingwen Zheng, Senlin Leng, Yujie Qiang and Viswanathan S. Saji, 
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引用次数: 5

Abstract

Screening a green corrosion inhibitor that can prevent Al anode corrosion and enhance the battery performance is highly significant for developing next-generation Al–air batteries. This work explores the non-toxic, environmentally safe, and nitrogen-rich amino acid derivative, N(α)-Boc-l-tryptophan (BCTO), as a green corrosion inhibitor for Al anodes. Our results confirm that BCTO has an excellent corrosion inhibition effect for the Al-5052 alloy in 4 M NaOH solution. An optimum inhibitor addition (2 mM) has increased the Al–air battery performance; the corrosion inhibition efficiency was 68.2%, and the anode utilization efficiency reached 92.0%. The capacity and energy density values increased from 990.10 mA h g–1 and 1317.23 W h kg–1 of the uninhibited system to 2739.70 mA h g–1 and 3723.53 W h kg–1 for the 2 mM BCTO added system. The adsorption behavior of BCTO on the Al-5052 surface was further explored by theoretical calculations. This work paves the way for constructing durable Al–air batteries through an electrolyte regulation strategy.

Abstract Image

色氨酸衍生物对碱性铝空气电池阳极腐蚀的调节作用
筛选一种既能防止铝阳极腐蚀又能提高电池性能的绿色缓蚀剂对开发下一代铝空气电池具有重要意义。本研究探索了无毒、环保、富氮的氨基酸衍生物N(α)- boc -l-色氨酸(BCTO)作为Al阳极的绿色缓蚀剂。结果表明,BCTO在4 M NaOH溶液中对Al-5052合金具有良好的缓蚀效果。最佳抑制剂(2 mM)的加入提高了铝空气电池的性能;缓蚀效率为68.2%,阳极利用率为92.0%。加入2 mM BCTO后,系统的容量和能量密度分别从未加抑制的990.10 mA h g-1和1317.23 W h kg-1增加到2739.70 mA h g-1和3723.53 W h kg-1。通过理论计算进一步探讨了BCTO在Al-5052表面的吸附行为。这项工作为通过电解质调节策略构建耐用的铝空气电池铺平了道路。
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来源期刊
Langmuir
Langmuir 化学-材料科学:综合
CiteScore
6.50
自引率
10.30%
发文量
1464
审稿时长
2.1 months
期刊介绍: Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).
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