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Interface chemistry of an amide electrolyte for highly reversible lithium metal batteries

Journal Article (2020)
Authors

Q. Wang (Tsinghua University)

Zhenpeng Yao (Harvard University)

C. Zhao (Chinese Academy of Sciences)

Tomas W. Verhallen (TU Delft - RST/Storage of Electrochemical Energy)

Daniel P. Tabor (Harvard University)

M. Liu (TU Delft - RST/Storage of Electrochemical Energy)

Frans G.B. Ooms (TU Delft - RST/Technici Pool)

Feiyu Kang (Tsinghua University)

Marnix Wagemaker (TU Delft - RST/Storage of Electrochemical Energy)

G.B. More authors (External organisation)

Research Group
RST/Storage of Electrochemical Energy
Copyright
© 2020 Qidi Wang, Zhenpeng Yao, Chenglong Zhao, T.W. Verhallen, Daniel P. Tabor, M. Liu, F.G.B. Ooms, Feiyu Kang, M. Wagemaker, More Authors
To reference this document use:
https://doi.org/10.1038/s41467-020-17976-x
More Info
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Publication Year
2020
Language
English
Copyright
© 2020 Qidi Wang, Zhenpeng Yao, Chenglong Zhao, T.W. Verhallen, Daniel P. Tabor, M. Liu, F.G.B. Ooms, Feiyu Kang, M. Wagemaker, More Authors
Research Group
RST/Storage of Electrochemical Energy
Issue number
1
Volume number
11
DOI:
https://doi.org/10.1038/s41467-020-17976-x
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Abstract

Metallic lithium is a promising anode to increase the energy density of rechargeable lithium batteries. Despite extensive efforts, detrimental reactivity of lithium metal with electrolytes and uncontrolled dendrite growth remain challenging interconnected issues hindering highly reversible Li-metal batteries. Herein, we report a rationally designed amide-based electrolyte based on the desired interface products. This amide electrolyte achieves a high average Coulombic efficiency during cycling, resulting in an outstanding capacity retention with a 3.5 mAh cm−2 high-mass-loaded LiNi0.8Co0.1Mn0.1O2 cathode. The interface reactions with the amide electrolyte lead to the predicted solid electrolyte interface species, having favorable properties such as high ionic conductivity and high stability. Operando monitoring the lithium spatial distribution reveals that the highly reversible behavior is related to denser deposition as well as top-down stripping, which decreases the formation of porous deposits and inactive lithium, providing new insights for the development of interface chemistries for metal batteries.