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Lithiophobic-lithiophilic composite architecture through co-deposition technology toward high-performance lithium metal batteries

Journal Article


Abstract


  • Metallic lithium (Li) has been acclaimed as the most promising anode materials for lithium batteries due to its ultrahigh theoretical capacity of 3860 mA h g−1. Its practical application is impeded, however, due to the notorious problems related to dendrite growth caused by its uneven current density distribution and high Li nucleation overpotential. Here, we report a three-dimensional (3D) lithiophobic phase (Cu) and lithiophilic phase (Zn or Sn) composite architecture realized through a facile electrochemical co-deposition technology and its use as a scaffold for dendrite-free Li metal anode. It is found that the simultaneous formation of this lithiophobic-lithiophilic composite on Cu foam leads to ultrafine lithiophilic phase (20 nm) and reduced Li nucleation overpotential, as well as enhanced homogeneity, which enables a uniform electric field distribution during lithium plating/stripping, thus facilitating even and dendrite-free Li deposition. In the meanwhile, the lithiophobic component in the composite acts as a strong backbone, helping to maintain structural stability during lithium storage. Also, the as-prepared three-dimensional micro/nanoporous scaffold with large surface area can effectively reduce the local current density and suppress Li dendrite growth. The full cells with the composite architecture/Li as anode and LiFePO4 as cathode show promising electrochemical performance with over 80% capacity retention over 1600 cycles at 5 C. This work broadens the horizon of lithiophilic hosts for next-generation high-performance Li metal batteries.

Authors


  •   Cheng, Yifeng (external author)
  •   Ke, Xi (external author)
  •   Chen, Yuanmao (external author)
  •   Huang, Xinyue (external author)
  •   Shi, Zhicong (external author)
  •   Guo, Zaiping

Publication Date


  • 2019

Citation


  • Cheng, Y., Ke, X., Chen, Y., Huang, X., Shi, Z. & Guo, Z. (2019). Lithiophobic-lithiophilic composite architecture through co-deposition technology toward high-performance lithium metal batteries. Nano Energy, 63 103854-1-103854-10.

Scopus Eid


  • 2-s2.0-85068106349

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3704

Start Page


  • 103854-1

End Page


  • 103854-10

Volume


  • 63

Place Of Publication


  • Netherlands

Abstract


  • Metallic lithium (Li) has been acclaimed as the most promising anode materials for lithium batteries due to its ultrahigh theoretical capacity of 3860 mA h g−1. Its practical application is impeded, however, due to the notorious problems related to dendrite growth caused by its uneven current density distribution and high Li nucleation overpotential. Here, we report a three-dimensional (3D) lithiophobic phase (Cu) and lithiophilic phase (Zn or Sn) composite architecture realized through a facile electrochemical co-deposition technology and its use as a scaffold for dendrite-free Li metal anode. It is found that the simultaneous formation of this lithiophobic-lithiophilic composite on Cu foam leads to ultrafine lithiophilic phase (20 nm) and reduced Li nucleation overpotential, as well as enhanced homogeneity, which enables a uniform electric field distribution during lithium plating/stripping, thus facilitating even and dendrite-free Li deposition. In the meanwhile, the lithiophobic component in the composite acts as a strong backbone, helping to maintain structural stability during lithium storage. Also, the as-prepared three-dimensional micro/nanoporous scaffold with large surface area can effectively reduce the local current density and suppress Li dendrite growth. The full cells with the composite architecture/Li as anode and LiFePO4 as cathode show promising electrochemical performance with over 80% capacity retention over 1600 cycles at 5 C. This work broadens the horizon of lithiophilic hosts for next-generation high-performance Li metal batteries.

Authors


  •   Cheng, Yifeng (external author)
  •   Ke, Xi (external author)
  •   Chen, Yuanmao (external author)
  •   Huang, Xinyue (external author)
  •   Shi, Zhicong (external author)
  •   Guo, Zaiping

Publication Date


  • 2019

Citation


  • Cheng, Y., Ke, X., Chen, Y., Huang, X., Shi, Z. & Guo, Z. (2019). Lithiophobic-lithiophilic composite architecture through co-deposition technology toward high-performance lithium metal batteries. Nano Energy, 63 103854-1-103854-10.

Scopus Eid


  • 2-s2.0-85068106349

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3704

Start Page


  • 103854-1

End Page


  • 103854-10

Volume


  • 63

Place Of Publication


  • Netherlands