Chrysanthemum coronarium leaves extract as an eco-friendly corrosion inhibitor for aluminum anode in aluminum-air battery

IF 5.2 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Liquids Pub Date : 2022-02-01 DOI:10.1016/j.molliq.2021.118269

Thi Huong Pham, Woo-Hyuk Lee, Jung-Gu Kim

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引用次数: 21

Abstract

In this study, the effect of chrysanthemum coronarium leaves extract (CCLE) in increasing alkaline aluminum-air (Al-air) battery performance is elucidated using hydrogen gas evolution tests, various electrochemical measurements and battery performance tests. CCLE additive displays the outstanding corrosion inhibition effect on the Al anode through the formation of a protective film on the Al surface. The surface morphology of Al is assessed by scanning electron-microscopy (SEM), and atomic force microscopy (AFM). Fourier transform infrared (FT-IR) spectroscopy, and x-ray photoelectron spectroscopy (XPS) are applied to disclose the chemical composition of the extract as well as formation mechanism of the protective film on the Al surface. This film is caused by the electrostatic interactions, hydro-bonds and/or a combination of these between the extract molecules and aluminum surface. The presence of this film advances the capacity density of battery up to 2941.18 mAh g ^-1, increases three fold compared to a 4 M NaOH solution. Also, the electrochemical activity of the Al electrode is improved significantly.

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菊花叶提取物作为铝-空气电池铝阳极的环保型缓蚀剂

本研究通过氢气释放试验、各种电化学测量和电池性能测试，阐明了菊花冠状叶提取物(CCLE)提高碱性铝-空气(Al-air)电池性能的作用。CCLE添加剂通过在铝阳极表面形成保护膜，对铝阳极表现出优异的缓蚀效果。采用扫描电子显微镜(SEM)和原子力显微镜(AFM)对铝的表面形貌进行了评价。利用傅里叶变换红外光谱(FT-IR)和x射线光电子能谱(XPS)揭示了提取液的化学成分以及铝表面保护膜的形成机理。这种薄膜是由萃取物分子和铝表面之间的静电相互作用、氢键和/或这些相互作用的组合引起的。该膜的存在将电池的容量密度提高到2941.18 mAh g -1，与4m NaOH溶液相比增加了三倍。同时，铝电极的电化学活性也得到了显著提高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Molecular Liquids 化学-物理：原子、分子和化学物理

CiteScore

10.30

自引率

16.70%

发文量

2597

审稿时长

78 days

期刊介绍： The journal includes papers in the following areas: – Simple organic liquids and mixtures – Ionic liquids – Surfactant solutions (including micelles and vesicles) and liquid interfaces – Colloidal solutions and nanoparticles – Thermotropic and lyotropic liquid crystals – Ferrofluids – Water, aqueous solutions and other hydrogen-bonded liquids – Lubricants, polymer solutions and melts – Molten metals and salts – Phase transitions and critical phenomena in liquids and confined fluids – Self assembly in complex liquids.– Biomolecules in solution The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include: – Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.) – Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.) – Light scattering (Rayleigh, Brillouin, PCS, etc.) – Dielectric relaxation – X-ray and neutron scattering and diffraction. Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.