首页|Hybrid ionic/electronic interphase enabling uniform nucleation and fast diffusion kinetics for stable lithium metal anode

Hybrid ionic/electronic interphase enabling uniform nucleation and fast diffusion kinetics for stable lithium metal anode

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Lithium(Li)dendrite issue,which is usually caused by inhomogeneous Li nucleation and fragile solid electrolyte interphase(SEI),impedes the further development of high-energy Li metal batteries.However,the integrated construction of a high-stable SEI layer that can regulate uniform nucleation and facilitate fast Li-ion diffusion kinetics for Li metal anode still falls short.Herein,we designed an artificial SEI with hybrid ionic/electronic interphase to regulate Li deposition by in-situ constructing metal Co clusters em-bedded in LiF matrix.The generated Co and LiF both enable fast Li-ion diffusion kinetics,meanwhile,the lithiophilic properties of Co clusters can serve as Li-ion nucleation sites,thereby contributing to uniform Li nucleation and non-dendritic growth.As a result,a dendrite-free Li deposition with a low overpoten-tial(16.1 mV)is achieved,which enables an extended lifespan over 750 h under strict conditions.The full cells with high-mass-loading LiFePO4(11.5 mg/cm2)as cathodes exhibit a remarkable rate capacity of 84.1 mAh/g at 5 C and an improved cycling performance with a capacity retention of 96.4％after undergoing 180 cycles.

Lithium metal anodeHybrid ionic/electronic interphaseSolid electrolyte interphaseFast diffusion kineticsDendritic growth of lithium

Lun Li、Pengxia Ji、Meng Huang、Zixin Zhang、Hong Wang、Francis Verpoort、Jinlong Yang、Daping He

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State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China

Guangdong Research Center for Interfacial Engineering of Functional Materials,College of Materials Science and Engineering,Shenzhen University,Shenzhen 518060,China

Sanya Science and Education Innovation Park of Wuhan University of Technology,Sanya 572000,China

Hubei Engineering Research Center of RF-Microwave Technology and Application,Wuhan University of Technology,Wuhan 430070,China

State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China

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国家自然科学基金国家自然科学基金广东省自然科学基金深圳市科技计划

22279097521722172021A1515010144JCYJ20210324120400002

2024

10.1016/j.cclet.2023.109144

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(2)
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