Inhibition effect and mechanism of inorganic-organic hybrid additives on three-dimension porous aluminum foam in alkaline Al-air battery

Jiang, Hao; Yu, Sha; Li, Wenzhang; Yang, Yang; Yang, Lishan; Zhang, Zejie

doi:10.1016/j.jpowsour.2019.227460

Cited by 75 publications

(51 citation statements)

References 37 publications

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“…In this process, Zn 2+ as the central atoms combine with OH − in the form of coordination bonds to form

[ Equation 3 ] ( Jiang et al., 2020 ; Zhu et al., 2019 ). After that, substitution reaction will happen between Al with strong reducibility and

to obtain Zn and tetrahydroxyaluminate ions

[ Equation 4 ] ( Jiang et al., 2020 ; Zhu et al., 2019 ). Finally, Zn adheres to the surface of the Al electrode to protect it from self-corrosion.…”

Section: Resultsmentioning

confidence: 99%

“…They are composed of a semi-circular high-frequency region and a semi-circular low-frequency region. The first semi-circle represents the process that Al atoms lose electrons and become aluminum ions (Al 3+ ) ( Jiang et al., 2020 ). The second semi-circle represents the process of continuous production, dissolution and escape of corrosion products such as

and H 2 .…”

Section: Resultsmentioning

confidence: 99%

“…For example, a fixed concentration of zinc oxide (ZnO) was added to 4 M sodium hydroxide (NaOH) solution by researchers to explore its mechanism of inhibiting hydrogen evolution from Al electrodes. Moreover, the effect of ZnO and organic acid on the corrosion resistance of the Al electrode surface was further investigated in this study ( Jiang et al., 2020 ). On the other hand, scholars analyzed the electrochemical properties such as the equilibrium potential and corrosion current of the Al alloy (AA5052) electrode when putting ZnO from 1 to 8 mM into the 4 M NaOH solution.Based on this regularity, 10 mM 8-Hydroxyquinoline was added to further improve capacity and other performance parameters of the fuel cell ( Zhu et al., 2019 ).…”

Section: Introductionmentioning

confidence: 99%

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A high-performance Al-air fuel cell using a mesh-encapsulated anode via Al–Zn energy transfer

et al. 2021

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Summary Aluminum-air fuel cells attract more attention because of their high specific energy, low cost, and friendly environment. However, the problems of hydrogen evolution corrosion and low anode efficiency of aluminum-air fuel cells remain unresolved. Herein, we propose an aluminum-air fuel cell using a mesh-encapsulated anode, where the energy redistribution can be achieved and the discharge performance of the fuel cell can be highly improved. The results show that the highest inhibition efficiency is 73.930% when the aluminum plate is immersed in 6 M potassium hydroxide solution containing 100% zinc oxide. The highest anode efficiency is up to 61.740% when the fuel cell using a mesh-encapsulated anode is discharged at 20 mA/cm 2 , which is more than 2 times than that of no mesh, and the highest capacity can reach 1839.842 mAh/g, which is 101.623% higher than before optimization. Thus, our studies are very instructive for the large-scale application of aluminum-air fuel cells.

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“…In this process, Zn 2+ as the central atoms combine with OH − in the form of coordination bonds to form

[ Equation 3 ] ( Jiang et al., 2020 ; Zhu et al., 2019 ). After that, substitution reaction will happen between Al with strong reducibility and

to obtain Zn and tetrahydroxyaluminate ions

[ Equation 4 ] ( Jiang et al., 2020 ; Zhu et al., 2019 ). Finally, Zn adheres to the surface of the Al electrode to protect it from self-corrosion.…”

Section: Resultsmentioning

confidence: 99%

and H 2 .…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A high-performance Al-air fuel cell using a mesh-encapsulated anode via Al–Zn energy transfer

et al. 2021

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“…ZnO is one of the most commonly used corrosion inhibitors for alkaline metal-air batteries. [22,23] MoS 2 has good hydrophobicity and can prevent the anode from being corroded by excessive water molecules. [24] In addition, MoS 2 also has good conductivity, which could reduce the negative impact of the surface coating on the electrochemical performance of the battery.…”

Section: Introductionmentioning

confidence: 99%

Novel Multifunctional Janus‐Type Membrane on Al Anode for Corrosion Protection

Wang

et al. 2021

Adv Materials Inter

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Novel multifunctional Janus‐type membrane with both hydrophobic and anticorrosion abilities is constructed on the surface of aluminum (Al), using MoS2 as a hydrophobic layer and ZnO as a corrosion‐resistant layer. Al anode coated with the Janus‐type membrane is used as an example to study the specific property of the as‐prepared Janus‐type membrane. In the Al–air battery, the self‐corrosion of the Al anode is well inhibited since the Janus‐type membrane can block the invasion of excess hydroxide ions and water molecules simultaneously. The results show that the inhibition efficiency of the Janus‐type membrane is as high as 79.2%. Furthermore, the electrochemical measurements demonstrate that the discharge specific capacity of the Al–air battery with the Janus‐type membrane can reach up to 2095 mAh g−1, approximately two times as much as that of traditional batteries. The integrated strategy of combining hydrophobic and anticorrosion membrane is a novel method for corrosion protection of metal electrode. This Janus‐type membrane holds a great potential toward corrosion inhibition for the other metal in alkaline environment as well.

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“…In the past decades, various methods have been carried out to further improve the performances of Al-air batteries, including anode alloying, [21][22][23][24] adding inhibitors, [25][26][27][28] employing nonaqueous [29][30][31][32] or gel electrolyte, 33,34 and the development of highly effective catalysts for oxygen reduction reaction (ORR). [35][36][37][38] Gel 39,40 and non-aqueous 31 electrolyte can reach lower self-corrosion rate but reduce power density by one or two orders.…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh voltage and energy density aluminum‐air battery based on aqueous alkaline‐acid hybrid electrolyte

et al. 2020

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Thanks to the high theoretical capacity and energy density, abundant resource, low-cost, and environmental friendliness, aluminum-air battery (AAB) has attracted research interests driven by the promise for electricity generator. However, low operating voltage leads to low practical energy density, and restricting the applications of AAB. In this study, the concept of an ultrahigh voltage AAB based on aqueous alkaline-acid hybrid electrolyte is introduced and demonstrated. Meanwhile, the working mechanism is investigated. And the open-circuit voltage of the novel designed battery is 2.56 V, 29.9% higher than conventional alkaline AAB. Thanks to the fluid electrolyte, the decline in discharge voltage caused by the change in pH is overcome. And a high-energy density of 4591 mWh g Al −1 is achieved at a discharge voltage of around 2.08 V at 10 mA cm −2. These results provide a viable approach to improve the performance of Al-air battery.

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Inhibition effect and mechanism of inorganic-organic hybrid additives on three-dimension porous aluminum foam in alkaline Al-air battery

Cited by 75 publications

References 37 publications

A high-performance Al-air fuel cell using a mesh-encapsulated anode via Al–Zn energy transfer

A high-performance Al-air fuel cell using a mesh-encapsulated anode via Al–Zn energy transfer

Novel Multifunctional Janus‐Type Membrane on Al Anode for Corrosion Protection

Ultrahigh voltage and energy density aluminum‐air battery based on aqueous alkaline‐acid hybrid electrolyte

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