Journal
ADVANCED SCIENCE
Volume 8, Issue 12, Pages -Publisher
WILEY
DOI: 10.1002/advs.202005031
Keywords
active lithium loss; Coulombic efficiency; lithium ion batteries; prelithiation; solid electrolyte interphase
Categories
Funding
- Office of Naval Research [N00014-17-1-2650]
- Army Research Laboratory [W911NF-15-2-0103]
- National Science Foundation of China [511777140]
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This progress report outlines the initial active lithium loss issue in next-generation Li-ion batteries and the development, classification, and comparison of various pre-lithiation strategies to address this problem. It also reviews the research progress of pre-lithiation strategies for representative electrochemical systems, discusses current challenges, future perspectives, and aims to provide guidance for research directions tailored for different applications based on the proposed pre-lithiation strategies summaries and comparisons.
Next-generation Li-ion batteries (LIBs) with higher energy density adopt some novel anode materials, which generally have the potential to exhibit higher capacity, superior rate performance as well as better cycling durability than conventional graphite anode, while on the other hand always suffer from larger active lithium loss (ALL) in the first several cycles. During the last two decades, various pre-lithiation strategies are developed to mitigate the initial ALL by presetting the extra Li sources to effectively improve the first Coulombic efficiency and thus achieve higher energy density as well as better cyclability. In this progress report, the origin of the huge initial ALL of the anode and its effect on the performance of full cells are first illustrated in theory. Then, various pre-lithiation strategies to resolve these issues are summarized, classified, and compared in detail. Moreover, the research progress of pre-lithiation strategies for the representative electrochemical systems are carefully reviewed. Finally, the current challenges and future perspectives are particularly analyzed and outlooked. This progress report aims to bring up new insights to reassess the significance of pre-lithiation strategies and offer a guideline for the research directions tailored for different applications based on the proposed pre-lithiation strategies summaries and comparisons.
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