Direct-current electrodeposition and characterization of Ni5Sb2 nanowires array

Liu, Fei; Yang, Youwen; Chen, Yanbiao; Li, Tian-ying; Kong, Mingguang

doi:10.1016/j.apsusc.2011.09.055

Cited by 3 publications

(1 citation statement)

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“…The electrodeposition method is defined as a process of plating metals or alloys from aqueous, non-aqueous, or molten salts on the surface of cathode electrodes . It mainly includes direct-current electrodeposition, pulse electrodeposition, and composite electrodeposition, which can be used to study the redox reaction and prepare composite electrode materials. − In addition to the basic research, the electrodeposition is also used to in situ observe the internal structure of electrodes in the application of alkali metal batteries, which made it a feasible and acceptable strategy to elucidate the nucleation and growth kinetics of metal deposition. , Moreover, some studies focus on electrodeposition to acquire the dynamic change and build high-performance electrodes: Gao et al revealed adjusting electrodeposition behavior through enhancing mass transfer to obtain stable Li metal anodes . Zeng et al explored the influence of electrode roughness on Na electrochemical deposition through the theoretical models of Na deposition .…”

Section: Introductionmentioning

confidence: 99%

Expounding the Initial Alloying Behavior of Na–K Liquid Alloy Electrodes

Wang

Luo

et al. 2021

ACS Appl. Mater. Interfaces

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Primary electrodeposition is an accepted strategy to elucidate the nucleation and growth kinetics of metal electrodes. Nevertheless, when confronted with the phase transition process caused by bi-active metals such as NaK liquid alloys, the research process becomes complex and elusive. Herein, we have reduced the intricate issues to relatively simple initial alloying behaviors. Two exchange diffusion mechanisms of the Na atom embedded in K crystals and K atom embedded in Na crystals are investigated by first-principles density functional theory (DFT) calculation and mechanical simulation. As a result, the process of embedding the Na atom in K crystals shows a better thermodynamic stability and lower activation barrier and structural stress than those of the other. The abovementioned conclusions are further proved by stepwise Na and K electrodeposition experiments, and the prepared NaK alloy electrode displays excellent electrochemical performance. Our findings correlate the original alloying mechanism model specification with electrodeposition experimental verification and provide strategies to achieve controllable NaK electrode construction.

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