Corrosion inhibition of L-tryptophan on Al-5052 anode for Al-air battery with alkaline electrolyte

Huang, Yue; Shi, Wei; Guo, Lei; Zhang, Qiao; Wang, Kai; Zheng, Xiaofeng; Verma, Chandrabhan; Qiang, Yujie

doi:10.1016/j.jpowsour.2023.232866

Cited by 20 publications

(8 citation statements)

References 51 publications

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“…However, the sluggish ORR in the Al-air battery limits the potential of this battery and complicates the process. 115 The intermediate steps, together with the activation of oxygen, removal of oxides, and bonding of oxygen atoms should considered to understand the complete mechanism. 116 The ORR mechanism is different in acidic (eqn ( 6)-( 8)) and alkaline media (eqn (9)-( 13)), which are mentioned in the following reactions: 57,102 ORR in acidic medium:…”

Section: Reactions On the Cathodementioning

confidence: 99%

“…4 Schematic demonstration of the setup to determine the hydrogen evolution rate. 115 alloying alters the surface characteristics compared to the pure Al anode. These results suggest that alloying improves the electrochemical performance by signicantly altering the corrosion resistance.…”

Section: Alloying Of Aluminum Anodementioning

confidence: 99%

“…However, the sluggish ORR in the Al–air battery limits the potential of this battery and complicates the process. 115 The intermediate steps, together with the activation of oxygen, removal of oxides, and bonding of oxygen atoms should considered to understand the complete mechanism. 116 …”

Section: Components Of Al–air Battery and Reaction Mechanismmentioning

confidence: 99%

See 2 more Smart Citations

Aluminum–air batteries: current advances and promises with future directions

Rani,

Yadav,

Saini

et al. 2024

RSC Adv.

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Section: Reactions On the Cathodementioning

confidence: 99%

Section: Alloying Of Aluminum Anodementioning

confidence: 99%

See 1 more Smart Citation

Aluminum–air batteries: current advances and promises with future directions

Rani,

Yadav,

Saini

et al. 2024

RSC Adv.

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show abstract

“…For example, L-tryptophan, an eco-friendly amino acid, can provide various adsorption sites via indole moiety, carboxyl functional groups, and O and N heteroatoms in the organic molecules. [22] As for the inorganic electrolyte additives (e.g., ZnO and Na 2 SnO 3 ), [23,24] they facilitate the formation of metal protective film with the maintained electrochemical activity of the Al anode. Nevertheless, the use of a single electrolyte additive still poses certain challenges.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Organic–Inorganic Additive for Robust Al Anode in Alkaline Aluminum–Air Battery

Miao,

Li,

Jin

et al. 2023

Small Methods

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Aluminum–air batteries (AABs), known for their high energy density, environmental friendliness, and cost‐effectiveness, show immense promise in the realm of energy conversion applications. Nonetheless, their commercialization has encountered inherent challenges of Al anode corrosion and material degradation. In this study, economical hybrid electrolyte additives to inhibit the Al corrosion are developed, safeguarding the integrity of the Al anode. Due to the synergistic interplay between the organic compound dithiothreitol, and inorganic compounds zinc chloride, a robust zinc film is formed on the Al surface This Zn film plays a pivotal role in quelling parasitic hydrogen evolution reactions that typically can plague the Al electrode. Consequently, the as‐prepared hybrid additive culminates in a remarkable enhancement to AABs, delivering exceptional discharge capacity of 1793.37 mAh g−1, high energy density of 2047 Wh kg−1, and excellent battery longevity (over 20 h in on/off cycling tests). This study, therefore, introduces a novel approach in utilizing hybrid electrolyte additives to effectively counteract corrosion‐related challenges and boost the stability and performance of AABs.

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“…However, the hydrogen evolution corrosion and by-product accumulation, caused by the parasitic reaction of the Al anode, limit the energy efficiency and anodizing rate, which hinder achieving a breakthrough in the performance of the battery. 13,14 More studies have focused on the inhibition of Al self-corrosion, so a series of approaches have been proposed, including electrolyte modification, 15,16 anode alloying, 17,18 hydrogel electrolyte replacement, 19,20 etc. A glucose additive has been used to modify the aqueous alkaline electrolyte of Al-air batteries, due to which the activity of H 2 O molecules is reduced and an organic adsorption layer on the anode surface is constructed based on the ''molecular crowding effect'', suppressing the Al self-corrosion.…”

mentioning

confidence: 99%