Decoupling the origins of irreversible coulombic efficiency in anode-free lithium metal batteries

Chen-Jui Huang, Balamurugan Thirumalraj, Hsien-Chu Tao, Kassie Nigus Shitaw, Hogiartha Sutiono, Tesfaye Teka Hagos, Tamene Tadesse Beyene, Li-Ming Kuo, Chun-Chieh Wang, She-Huang Wu, Wei-Nien Su and Bing Joe Hwang ()
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Chen-Jui Huang: National Taiwan University of Science and Technology
Balamurugan Thirumalraj: National Taiwan University of Science and Technology
Hsien-Chu Tao: National Taiwan University of Science and Technology
Kassie Nigus Shitaw: National Taiwan University of Science and Technology
Hogiartha Sutiono: National Taiwan University of Science and Technology
Tesfaye Teka Hagos: National Taiwan University of Science and Technology
Tamene Tadesse Beyene: National Taiwan University of Science and Technology
Li-Ming Kuo: National Taiwan University of Science and Technology
Chun-Chieh Wang: National Synchrotron Radiation Research Center (NSRRC)
She-Huang Wu: National Taiwan University of Science and Technology
Wei-Nien Su: National Taiwan University of Science and Technology
Bing Joe Hwang: National Taiwan University of Science and Technology

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract Anode-free lithium metal batteries are the most promising candidate to outperform lithium metal batteries due to higher energy density and reduced safety hazards with the absence of metallic lithium anode during initial cell fabrication. In general, researchers report capacity retention, reversible capacity, or rate capability of the cells to study the electrochemical performance of anode-free lithium metal batteries. However, evaluating the behavior of batteries from limited aspects may easily overlook other information hidden deep inside the meretricious results or even lead to misguided data interpretation. In this work, we present an integrated protocol combining different types of cell configuration to determine various sources of irreversible coulombic efficiency in anode-free lithium metal cells. The decrypted information from the protocol provides an insightful understanding of the behaviors of LMBs and AFLMBs, which promotes their development for practical applications.

Date: 2021
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DOI: 10.1038/s41467-021-21683-6

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