首页|High-Performance 3D Li-B-C-Al Alloy Anode and its Twofold Li Electrostripping and Plating Mechanism Revealed by Synchrotron X-Ray Tomography

High-Performance 3D Li-B-C-Al Alloy Anode and its Twofold Li Electrostripping and Plating Mechanism Revealed by Synchrotron X-Ray Tomography

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The uncontrollable Li electrostripping and plating process that results in dendritic Li growth and huge volume change of Li anode limits the practicality of Li metal batteries(LMBs).To simultaneously address these issues,designing three-dimensional(3D),lithiophilic and mechanically robust electrodes seems to be one of the cost-effective strategies.Herein,a new 3D Li-B-C-Al alloy anode is designed and fabricated.The prepared 3D alloy anode exhibits not only superior lithiophilicity that facilitates uniform Li nucleation and growth but also sufficient mechanical stability that maintains its structural integrity.Superior performance of the prepared 3D alloy is demonstrated through comprehensive electrochemical tests.In addition,non-destructive and 3D synchrotron X-ray computed tomography(SX-CT)technique is employed to investigate the underlying working mechanisms of the prepared alloy anode.A unique twofold Li electrostripping and plating mechanism under different electrochemical cycling conditions is revealed.Lastly,improved performance of the full cells built with the 3D alloy anode and LiNi0.8Co0.1Mn0.1O2(NCM811)cathode corroborate its potential application capability.Overall,the current work not only showcases the superiority of the 3D alloy as potential anode material for LMBs but also provides fundamental insights into its underlying working mechanisms that may further propel its research and development.

Li alloyLi metal anodeLi metal batteryLi-B-C-Alplating

Fengcheng Tang、Xia Zhang、Markus Osenberg、Chao Yang、Haifeng Huang、André Hilger、Masyuki Uesugi、Kentaro Uesug、Akihisa Takeuchi、Ingo Manke、Fu Sun、Libao Chen

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State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China

Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,Qingdao 266101,China

Helmholtz-Zentrum Berlin für Materialien und Energie,14109 Berlin Germany

College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China

Japan Synchrotron Radiation Research Institute(JASRI)/Spring-8,Sayo-gun Hyogo 679-5198,Japan

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&&国家自然科学基金

2020A1079 at BL20XUU1904216

2023

10.1002/eem2.12387

能源与环境材料(英文)

能源与环境材料(英文)

CSCD
ISSN：
年,卷(期)：2023.6(3)
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