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A promising solution for highly reversible zinc metal anode chemistry:Functional gradient interphase

Nano Research Energy 2024年第2期3卷 3-6页

作者： Xiaofeng He Xiang-Yu Kong Liping Wen CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Rechargeable zinc(Zn)metal batteries have long been plagued by dendrite growth and parasitic reactions due to the absence of a stable Zn-ion conductive solid-electrolyte interphase(SEI).Although the current strategies assist in suppressing dendritic Zn growth,it is still a challenge to obtain the operation-stability of Zn anode with high Coulombic efficiency(CE)required to implement a sustainable and long-cycling life of Zn metal *** this perspective,we summarize the advantages of the functional gradient interphase(FGI)and try to fundamentally understand the transport behaviors of Zn ions,based on recently an article understanding Zn *** correlation between the function-orientated design of gradient interphase and key challenges of Zn metal anodes in accelerating Zn2+transport kinetics,improving electrode reversibility,and inhibiting Zn dendrite growth and side reactions was particularly ***,the rational design and innovative directions are provided for the development and application of functional gradient interphase in rechargeable Zn metal battery systems.

关键词： zinc metal battery dendrite gradient solid-electrolyte interphase energy storage

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Stable Zn metal Anodes with Limited Zn-Doping in MgF_(2) Interphase for Fast and Uniformly Ionic Flux

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Nano-Micro Letters 2022年第3期14卷 169-183页

作者： Ji Young Kim Guicheng Liu Ryanda Enggar Anugrah Ardhi Jihun Park Hansung Kim Joong Kee Lee Energy Storage Research Center Korea Institute of Science and TechnologyHwarang‑ro 14‑gil 5Seongbuk‑guSeoul 02792Republic of Korea Department of Chemical and Biomolecular Engineering Yonsei University50 Yonsei‑roSeodaemun‑guSeoul 03722Republic of Korea Department of Physics Dongguk UniversitySeoul 04620Republic of Korea APC Technology 10868 Gangbyeonyeok‑ro‑4‑gilGwangjin‑guSeoul 05116Republic of Korea Department of Energy and Environmental Engineering KIST SchoolKorea University of Science and TechnologyHwarang‑ro 14‑gil 5Seongbuk‑guSeoul 02792Republic of Korea

The practical applications of aqueous Zn metal batteries are currently restricted by the inherent drawbacks of Zn such as the hydrogen evolution reaction,sluggish kinetics,and dendrite *** address these problems,herein,a limitedly Zn-doped MgF_(2)interphase comprising an upper region of pure,porous MgF_(2)and a lower region of gradient Zn-doped MgF_(2)is achieved via radio frequency sputtering *** porous MgF_(2)region is a polar insulator whose high corrosion resistance facilitates the de-solvation of the solvated Zn ions and suppression of hydrogen evolution,resulting in Zn metal electrodes with a low interfacial *** Zn-doped MgF_(2)region facilitates fast transfer kinetics and homogeneous deposition of Zn ions owing to the interfacial polarization between the Zn dopant and MgF_(2)matrix,and the high concentration of the Zn dopant on the surface of the metal substrate as fine ***,a symmetric cell incorporating the proposed Zn metal exhibits low overpotentials of~27.2 and~99.7 mV without Zn dendrites over 250 to 8000 cycles at current densities of 1.0 and 10.0 mA cm−2,*** developed Zn/MnO2 full cell exhibits superior capacity retentions of 97.5%and 84.0%with average Coulombic efficiencies of 99.96%after 1000 and 3000 cycles,respectively.

关键词： zinc metal battery MgF_(2)layer Limited zinc doping Ion-transfer kinetic Deposition guidance

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Symmetric is nonidentical:Operation history matters for Zn metal anode

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Nano Research Energy 2022年第2期1卷 1-2页

作者： Zengxia Pei School of Chemical and Biomolecular Engineering The University of SydneySydneyNew South Wales 2006Australia

Zn metal electrode is the key to enabling the full vision of next-generation Zn-metal batteries(ZMBs).Thus far,the critical dendrite issue still restricts the Zn anode lifespan,which has even become the Achilles heel to the rejuvenation of *** highlight previews the latest advance of Zn anode research,which suggests that Zn electrodes with initial stripping and plating can surprisingly lead to different morphology evolution routes.A proposed pre-deposition strategy is demonstrated to stabilize the Zn anode and homogenize further Zn plating/stripping.

关键词： zinc metal battery symmetric cell dendrite energy storage

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