Lithiophilicity conversion of the Cu surface through facile thermal oxidation: boosting a stable Li–Cu composite anode through melt infusion

文献情報

出版日 2019-02-06

DOI 10.1039/C9TA00466A

インパクトファクター 12.732

著者

Tianpeng Jiao, Shaoran Yang, Bin Liu, Wenjun Zhang, Kaili Zhang

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要旨

Introducing porous conductive matrixes as a “host” for metallic lithium (Li) can restrain the growth of Li dendrites and accommodate the volume fluctuation during cycling. These two key factors severely impede the practical application of metallic Li anodes. However, uniformly pre-loading Li into such matrixes remains a great challenge. Herein, a facile thermal oxidation approach was employed to modify the surface of a Cu mesh from being lithiophobic to being lithiophilic. In particular, the Cu mesh was uniformly coated with a layer of CuO after thermal treatment and thus it became lithiophilic due to the strong interaction between CuO and molten Li. Through a melt infusion approach, metallic Li was homogeneously pre-loaded into the Cu mesh which could simultaneously induce a homogeneous distribution of the electrical field and accommodate the volume fluctuation of metallic Li during cycling. As a result, the Li–Cu composite anode demonstrated a stable cycling performance in a symmetric cell (1000 cycles at a current density of 10 mA cm−2) and a full cell paired with Li iron phosphate (90.8 mA h g−1 at 5C after 1000 cycles, 77.6% of initial capacity). Such a facile and cost effective approach provides a solution for the mass production of stable Li anodes with emphasis on lithiophilicity conversion of the surface of Cu.

掲載誌

Journal of Materials Chemistry A

CiteScore: 19.5

自己引用率: 4.7%

年間論文数: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

Lithiophilicity conversion of the Cu surface through facile thermal oxidation: boosting a stable Li–Cu composite anode through melt infusion

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Journal of Materials Chemistry A

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