The effects of polyethylene glycol (PEG) as an electrolyte additive on the corrosion behavior and electrochemical performances of pure aluminum in an alkaline zincate solution

Electrolyte additive tris(trimethylsilyl) phosphite (TMSPi) was used to promote the electrochemical performances of LiNi[Formula: see text]Co[Formula: see text]Mn[Formula: see text]O2 (NCM523) at elevated voltage (4.5 V) and temperature (55[Formula: see text]C). The NCM523 in 2.0 wt.% TMSPi-added electrolyte exhibited a much higher capacity (166.8 mAh/g) than that in the baseline electrolyte (118.3 mAh/g) after 100 cycles under 4.5 V at 30[Formula: see text]C. Simultaneously, the NCM523 with 2.0 wt.% TMSPi showed superior rate capability compared to that without TMSPi. Besides, after 100 cycles at 55[Formula: see text]C under 4.5 V, the discharge capacity retention reached 87.4% for the cell with 2.0 wt.% TMSPi, however, only 24.4% of initial discharge capacity was left for the cell with the baseline electrolyte. A series of analyses (TEM, XPS and EIS) confirmed that TMSPi-derived solid electrolyte interphase (SEI) stabilized the electrode/electrolyte interface and hindered the increase of interface impedance, resulting in obviously enhanced electrochemical performances of NCM523 cathode materials under elevated voltage and/or temperature.

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Corrosion Behavior of Pure Aluminum in the Simulated PEMFC Environment

Zairyo-to-Kankyo ◽

10.3323/jcorr.70.64 ◽

2021 ◽

Vol 70 (3) ◽

pp. 64-67

Author(s):

Md. Ashraful Alam ◽

Aklima Jahan ◽

Ayumu Minoura ◽

Sekai Yonezawa ◽

Eiichi Suzuki ◽

...

Keyword(s):

Corrosion Behavior ◽

Pure Aluminum

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Optimization of plating process and corrosion behavior of nanocrystalline Ni-Mo coatings on pure aluminum

Colloids and Surfaces A Physicochemical and Engineering Aspects ◽

10.1016/j.colsurfa.2021.128128 ◽

2021 ◽

pp. 128128

Author(s):

Qianlian Bao ◽

Wenxin Zheng ◽

Lian Chen ◽

Zhenkai Xu ◽

Jingliang Han ◽

...

Keyword(s):

Corrosion Behavior ◽

Pure Aluminum

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Corrosion Behavior of Al in Ethanol–Gasoline Blends

Energies ◽

10.3390/en13215544 ◽

2020 ◽

Vol 13 (21) ◽

pp. 5544

Author(s):

Alfredo Brito-Franco ◽

Jorge Uruchurtu ◽

Isai Rosales-Cadena ◽

Roy Lopez-Sesenes ◽

Sergio Alonso Serna-Barquera ◽

...

Keyword(s):

Corrosion Behavior ◽

Sugar Cane ◽

Electrochemical Noise ◽

Electrochemical Impedance ◽

Pure Aluminum ◽

Electrochemical Techniques ◽

Intermediate Compound ◽

Corrosion Process ◽

Corrosion Rates ◽

Adsorption Desorption

The corrosion behavior of pure aluminum (Al) in 20 v/v% ethanol–gasoline blends has been studied using electrochemical techniques. Ethanol was obtained from different fruits including sugar cane, oranges, apples, or mangos, whereas other techniques included lineal polarization resistance, electrochemical noise, and electrochemical impedance spectroscopy for 90 days. Results have shown that corrosion rates for Al in all the blends were higher than that obtained in gasoline. In addition, the highest corrosion rate was obtained in the blend containing ethanol obtained from sugar cane. The corrosion process was under charge transfer control in all blends; however, for some exposure times, it was under the adsorption/desorption control of an intermediate compound. Al was susceptible to a localized, plotting type of corrosion in all blends, but they were bigger in size and in number in the blend containing ethanol obtained from sugar cane.

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