Magnetoelectric Coupling for Metal–Air Batteries

Wang, Hengwei; Wang, Keliang; Zuo, Yayu; Wei, Manhui; Pei, Pucheng; Zhang, Pengfei; Chen, Zhuo; Shang, Nuo

doi:10.1002/adfm.202210127

Cited by 19 publications

(8 citation statements)

References 315 publications

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“…[ 53 ] If polarization happens, then Maxwell stress caused by the interaction between the magnetic field and dipole moment should be taken into consideration(Figure 1c). [ 54 ] The generated Maxwell stress can change the shape of the paramagnetic droplets, which will affect the mass migration in the outer Helmholtz planes [ 55 ] and thus improving the efficiency of electrocatalytic reactions. Similarly, the magnetohydrodynamic effect as a result of the Lorentz force will influence the motion of electrons and bubbles.…”

Section: Resultsmentioning

confidence: 99%

Catalysis Under Alternating Magnetic Field: Rethinking the Origin of Enhanced Hydrogen Evolution Activities

Liu,

Zhang,

Sun

et al. 2023

Advanced Physics Research

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Magnetic fields are proposed to be a clean and powerful tool to boost the heterogeneous reaction processes, from the simple two‐electron transfer hydrogen evolution to the complicated proton‐coupling of multi‐electron transfer reactions. Although many mechanisms are proposed to explain the field‐assistant enhancement of activities, it remains an open question of how to understand the contradictory experiment results. In this study, the interplay between the alternating magnetic field (AMF) and the working electrodes from the viewpoint of their relative geometric positions is investigated. It is found that the HER current is almost doubled at an AMF of 25 mT when Pt foil and AMF are parallelly arranged, which is more significant than the perpendicularly arranged configuration. A significant increase in solution resistance is observed, which is in contradiction to previous works. The changing of currents with the AMF strength is investigated for the diamagnetic Cu, ferromagnetic Ni, and paramagnetic Ti and Pt wire, all suggesting the vital role of the induced electromotive force, which is a result of the relative geometric positions between the electrode and AMF. The findings provide an alternative mechanism for the magnetic field‐assisted electrocatalytic processes, which is helpful for the rational design of high‐performance catalysts.

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Section: Resultsmentioning

confidence: 99%

Catalysis Under Alternating Magnetic Field: Rethinking the Origin of Enhanced Hydrogen Evolution Activities

Liu,

Zhang,

Sun

et al. 2023

Advanced Physics Research

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“…The properties of stretchable electrolyte include ionic conductivity, thermal and chemical stabilities, electrochemical interface and interfacial resistance, mechanical strength, and so on, which can be referred to choose suitable electrolytes for SAZBs. [93,94] Ionic conductivity is one of the most important characteristics and the ionic conduction mechanism is based on the interaction between plasticizers and polymers, which is known as vehicle mechanism. [87] The stretchable electrolytes need to possess good stretchability, elasticity, and stability when batteries are subjected to external stress.…”

Section: Requirements For Stretchable Electrolytes Of Sazbsmentioning

confidence: 99%

Strategies Toward Stretchable Aqueous Zn‐based Batteries for Wearable Electronics from Components to Devices

Wang

Cheng

et al. 2023

Small Methods

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Recently, aqueous Zn‐based batteries (AZBs) are receiving increased attention in wearable and implantable electronics due to the low cost, high safety, high eco‐efficiency, and relatively high energy density. However, it is still a big challenge to develop stretchable AZBs (SAZBs) which can be conformally folded, crumpled, and stretched with human body motions. Although a lot of efforts have been dedicated to constructions of SAZBs, a comprehensive review which focuses on summarizing stretchable materials, device configurations and challenges of SAZBs is needed. Herein, this review attempts to critically review the latest developments and progress in stretchable electrodes, electrolytes, packaging materials and device configurations in detail. Furthermore, these challenges and potential future research directions in the field of SAZBs are also discussed.

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“…The energy crisis and environmental pollution have accelerated the research process for a new generation of renewable and sustainable energy storage and conversion technologies, including fuel cells, [1][2][3] water electrolysis facilities, [4][5][6] and Zn-air batteries. [7][8][9][10][11] Among the available options, Zn-air batteries (ZABs) are expected to emerge as a promising alternative to lithium-ion batteries in various applications such as electronic devices and buses, due to their high theoretical specific energy density (1084 Wh kg −1 ), eco-friendliness, and low cost. [12][13][14][15][16] However, the limited kinetics of the oxygen reduction reaction (ORR) on the cathode presents a constraint on the maximum power density of ZABs, [17][18][19] which is a crucial factor hindering their widespread adoption.…”

Section: Introductionmentioning

confidence: 99%

Constructing Nitrogen‐Doped Carbon Hierarchy Structure Derived from Metal‐Organic Framework as High‐Performance ORR Cathode Material for Zn‐Air Battery

Pan,

Gao,

et al. 2023

Small

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The development of efficient and low‐cost catalysts for cathodic oxygen reduction reaction (ORR) in Zn‐air battery (ZAB) is a key factor in reducing costs and achieving industrialization. Here, a novel segregated CoNiPt alloy embedded in N‐doped porous carbon with a nanoflowers (NFs)‐like hierarchy structure is synthesized through pyrolyzing Hofmann‐type metal‐organic frameworks (MOFs). The unique hierarchical NFs structure exposes more active sites and facilitates the transportation of reaction intermediates, thus accelerating the reaction kinetics. Impressively, the resulting 15% CoNiPt@C NFs catalyst exhibits outstanding alkaline ORR activity with a half‐wave potential of 0.93 V, and its mass activity is 7.5 times higher than that of commercial Pt/C catalyst, surpassing state‐of‐the‐art noble metal‐based catalysts. Furthermore, the assembled CoNiPt@C+RuO2 ZAB demonstrates a maximum power density of 172 mW cm−2, which is superior to that of commercial Pt/C+RuO2 ZAB. Experimental results reveal that the intrinsic ORR mass activity is attributed to the synergistic interaction between oxygen defects and pyrrolic/graphitic N species, which optimizes the adsorption energy of the intermediate species in the ORR process and greatly enhances catalytic activity. This work provides a practical and feasible strategy for synthesizing cost‐effective alkaline ORR catalysts by optimizing the electronic structure of MOF‐derived catalysts.

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Magnetoelectric Coupling for Metal–Air Batteries

Cited by 19 publications

References 315 publications

Catalysis Under Alternating Magnetic Field: Rethinking the Origin of Enhanced Hydrogen Evolution Activities

Catalysis Under Alternating Magnetic Field: Rethinking the Origin of Enhanced Hydrogen Evolution Activities

Strategies Toward Stretchable Aqueous Zn‐based Batteries for Wearable Electronics from Components to Devices

Constructing Nitrogen‐Doped Carbon Hierarchy Structure Derived from Metal‐Organic Framework as High‐Performance ORR Cathode Material for Zn‐Air Battery

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