Journal
MATERIALS TODAY
Volume 58, Issue -, Pages 110-118Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mattod.2022.07.008
Keywords
Pre-lithiation; Cycling stability; Lithiation degree; Structural stability; Lithium loss
Categories
Funding
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA21070304]
- National Natural Science Foundation of China [22139001]
- Taishan Scholars Program for Young Expert of Shandong Province [202103145]
- Shandong Energy Institute [SEI I202108]
- Natural Science Foundation of Shandong Province [ZR2021QB030]
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Pre-lithiation is crucial for improving the performance of lithium-ion batteries, including increasing energy density and enhancing initial coulombic efficiency. However, it also affects the cycle life of the batteries. Therefore, finding a balance between high energy density and long cycle life is important.
Pre-lithiation is critical for improving the energy density of lithium-ion batteries (LIBs) in practical applications. The pre-lithiation of the high-capacity anode with a large surface area enhances the initial coulombic efficiency (ICE) by compensating the lithium loss from the formation of solid electrolyte interphase (SEI). However, pre-lithiation also affects cycle life, which has been paid little attention to. Here, we first discuss the impact of pre-lithiation on the cycling stability of the full cells, which is closely related to anode material, the degree of pre-lithiation, and the stability of SEI. Then we provide suggestions on how to achieve both high energy density and long cycle life by pre-lithiation. The understanding of the correlation between pre-lithiation and cycling stability sheds light on achieving the optimal performance of lithium-ion batteries from pre-lithiation technology.
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